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Definition of thesis

Did you know.

In high school, college, or graduate school, students often have to write a thesis on a topic in their major field of study. In many fields, a final thesis is the biggest challenge involved in getting a master's degree, and the same is true for students studying for a Ph.D. (a Ph.D. thesis is often called a dissertation ). But a thesis may also be an idea; so in the course of the paper the student may put forth several theses (notice the plural form) and attempt to prove them.

Examples of thesis in a Sentence

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'thesis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

in sense 3, Middle English, lowering of the voice, from Late Latin & Greek; Late Latin, from Greek, downbeat, more important part of a foot, literally, act of laying down; in other senses, Latin, from Greek, literally, act of laying down, from tithenai to put, lay down — more at do

14th century, in the meaning defined at sense 3a(1)

Dictionary Entries Near thesis

the sins of the fathers are visited upon the children

thesis novel

Cite this Entry

“Thesis.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/thesis. Accessed 20 May. 2024.

Kids Definition

Kids definition of thesis, more from merriam-webster on thesis.

Nglish: Translation of thesis for Spanish Speakers

Britannica English: Translation of thesis for Arabic Speakers

Britannica.com: Encyclopedia article about thesis

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9.1 Developing a Strong, Clear Thesis Statement

Learning objectives.

• Develop a strong, clear thesis statement with the proper elements.
• Revise your thesis statement.

Have you ever known a person who was not very good at telling stories? You probably had trouble following his train of thought as he jumped around from point to point, either being too brief in places that needed further explanation or providing too many details on a meaningless element. Maybe he told the end of the story first, then moved to the beginning and later added details to the middle. His ideas were probably scattered, and the story did not flow very well. When the story was over, you probably had many questions.

Just as a personal anecdote can be a disorganized mess, an essay can fall into the same trap of being out of order and confusing. That is why writers need a thesis statement to provide a specific focus for their essay and to organize what they are about to discuss in the body.

Just like a topic sentence summarizes a single paragraph, the thesis statement summarizes an entire essay. It tells the reader the point you want to make in your essay, while the essay itself supports that point. It is like a signpost that signals the essay’s destination. You should form your thesis before you begin to organize an essay, but you may find that it needs revision as the essay develops.

Elements of a Thesis Statement

For every essay you write, you must focus on a central idea. This idea stems from a topic you have chosen or been assigned or from a question your teacher has asked. It is not enough merely to discuss a general topic or simply answer a question with a yes or no. You have to form a specific opinion, and then articulate that into a controlling idea —the main idea upon which you build your thesis.

Remember that a thesis is not the topic itself, but rather your interpretation of the question or subject. For whatever topic your professor gives you, you must ask yourself, “What do I want to say about it?” Asking and then answering this question is vital to forming a thesis that is precise, forceful and confident.

A thesis is one sentence long and appears toward the end of your introduction. It is specific and focuses on one to three points of a single idea—points that are able to be demonstrated in the body. It forecasts the content of the essay and suggests how you will organize your information. Remember that a thesis statement does not summarize an issue but rather dissects it.

A Strong Thesis Statement

A strong thesis statement contains the following qualities.

Specificity. A thesis statement must concentrate on a specific area of a general topic. As you may recall, the creation of a thesis statement begins when you choose a broad subject and then narrow down its parts until you pinpoint a specific aspect of that topic. For example, health care is a broad topic, but a proper thesis statement would focus on a specific area of that topic, such as options for individuals without health care coverage.

Precision. A strong thesis statement must be precise enough to allow for a coherent argument and to remain focused on the topic. If the specific topic is options for individuals without health care coverage, then your precise thesis statement must make an exact claim about it, such as that limited options exist for those who are uninsured by their employers. You must further pinpoint what you are going to discuss regarding these limited effects, such as whom they affect and what the cause is.

Ability to be argued. A thesis statement must present a relevant and specific argument. A factual statement often is not considered arguable. Be sure your thesis statement contains a point of view that can be supported with evidence.

Ability to be demonstrated. For any claim you make in your thesis, you must be able to provide reasons and examples for your opinion. You can rely on personal observations in order to do this, or you can consult outside sources to demonstrate that what you assert is valid. A worthy argument is backed by examples and details.

Forcefulness. A thesis statement that is forceful shows readers that you are, in fact, making an argument. The tone is assertive and takes a stance that others might oppose.

Confidence. In addition to using force in your thesis statement, you must also use confidence in your claim. Phrases such as I feel or I believe actually weaken the readers’ sense of your confidence because these phrases imply that you are the only person who feels the way you do. In other words, your stance has insufficient backing. Taking an authoritative stance on the matter persuades your readers to have faith in your argument and open their minds to what you have to say.

Even in a personal essay that allows the use of first person, your thesis should not contain phrases such as in my opinion or I believe . These statements reduce your credibility and weaken your argument. Your opinion is more convincing when you use a firm attitude.

On a separate sheet of paper, write a thesis statement for each of the following topics. Remember to make each statement specific, precise, demonstrable, forceful and confident.

• Texting while driving
• The legal drinking age in the United States
• Steroid use among professional athletes

Examples of Appropriate Thesis Statements

Each of the following thesis statements meets several of the following requirements:

• Specificity
• Ability to be argued
• Ability to be demonstrated
• Forcefulness
• The societal and personal struggles of Troy Maxon in the play Fences symbolize the challenge of black males who lived through segregation and integration in the United States.
• Closing all American borders for a period of five years is one solution that will tackle illegal immigration.
• Shakespeare’s use of dramatic irony in Romeo and Juliet spoils the outcome for the audience and weakens the plot.
• J. D. Salinger’s character in Catcher in the Rye , Holden Caulfield, is a confused rebel who voices his disgust with phonies, yet in an effort to protect himself, he acts like a phony on many occasions.
• Compared to an absolute divorce, no-fault divorce is less expensive, promotes fairer settlements, and reflects a more realistic view of the causes for marital breakdown.
• Exposing children from an early age to the dangers of drug abuse is a sure method of preventing future drug addicts.
• In today’s crumbling job market, a high school diploma is not significant enough education to land a stable, lucrative job.

You can find thesis statements in many places, such as in the news; in the opinions of friends, coworkers or teachers; and even in songs you hear on the radio. Become aware of thesis statements in everyday life by paying attention to people’s opinions and their reasons for those opinions. Pay attention to your own everyday thesis statements as well, as these can become material for future essays.

Now that you have read about the contents of a good thesis statement and have seen examples, take a look at the pitfalls to avoid when composing your own thesis:

A thesis is weak when it is simply a declaration of your subject or a description of what you will discuss in your essay.

Weak thesis statement: My paper will explain why imagination is more important than knowledge.

A thesis is weak when it makes an unreasonable or outrageous claim or insults the opposing side.

Weak thesis statement: Religious radicals across America are trying to legislate their Puritanical beliefs by banning required high school books.

A thesis is weak when it contains an obvious fact or something that no one can disagree with or provides a dead end.

Weak thesis statement: Advertising companies use sex to sell their products.

A thesis is weak when the statement is too broad.

Weak thesis statement: The life of Abraham Lincoln was long and challenging.

Read the following thesis statements. On a separate piece of paper, identify each as weak or strong. For those that are weak, list the reasons why. Then revise the weak statements so that they conform to the requirements of a strong thesis.

• The subject of this paper is my experience with ferrets as pets.
• The government must expand its funding for research on renewable energy resources in order to prepare for the impending end of oil.
• Edgar Allan Poe was a poet who lived in Baltimore during the nineteenth century.
• In this essay, I will give you lots of reasons why slot machines should not be legalized in Baltimore.
• Despite his promises during his campaign, President Kennedy took few executive measures to support civil rights legislation.
• Because many children’s toys have potential safety hazards that could lead to injury, it is clear that not all children’s toys are safe.
• My experience with young children has taught me that I want to be a disciplinary parent because I believe that a child without discipline can be a parent’s worst nightmare.

Writing at Work

Often in your career, you will need to ask your boss for something through an e-mail. Just as a thesis statement organizes an essay, it can also organize your e-mail request. While your e-mail will be shorter than an essay, using a thesis statement in your first paragraph quickly lets your boss know what you are asking for, why it is necessary, and what the benefits are. In short body paragraphs, you can provide the essential information needed to expand upon your request.

Thesis Statement Revision

Your thesis will probably change as you write, so you will need to modify it to reflect exactly what you have discussed in your essay. Remember from Chapter 8 “The Writing Process: How Do I Begin?” that your thesis statement begins as a working thesis statement , an indefinite statement that you make about your topic early in the writing process for the purpose of planning and guiding your writing.

Working thesis statements often become stronger as you gather information and form new opinions and reasons for those opinions. Revision helps you strengthen your thesis so that it matches what you have expressed in the body of the paper.

The best way to revise your thesis statement is to ask questions about it and then examine the answers to those questions. By challenging your own ideas and forming definite reasons for those ideas, you grow closer to a more precise point of view, which you can then incorporate into your thesis statement.

Ways to Revise Your Thesis

You can cut down on irrelevant aspects and revise your thesis by taking the following steps:

1. Pinpoint and replace all nonspecific words, such as people , everything , society , or life , with more precise words in order to reduce any vagueness.

Working thesis: Young people have to work hard to succeed in life.

Revised thesis: Recent college graduates must have discipline and persistence in order to find and maintain a stable job in which they can use and be appreciated for their talents.

The revised thesis makes a more specific statement about success and what it means to work hard. The original includes too broad a range of people and does not define exactly what success entails. By replacing those general words like people and work hard , the writer can better focus his or her research and gain more direction in his or her writing.

2. Clarify ideas that need explanation by asking yourself questions that narrow your thesis.

Working thesis: The welfare system is a joke.

Revised thesis: The welfare system keeps a socioeconomic class from gaining employment by alluring members of that class with unearned income, instead of programs to improve their education and skill sets.

A joke means many things to many people. Readers bring all sorts of backgrounds and perspectives to the reading process and would need clarification for a word so vague. This expression may also be too informal for the selected audience. By asking questions, the writer can devise a more precise and appropriate explanation for joke . The writer should ask himself or herself questions similar to the 5WH questions. (See Chapter 8 “The Writing Process: How Do I Begin?” for more information on the 5WH questions.) By incorporating the answers to these questions into a thesis statement, the writer more accurately defines his or her stance, which will better guide the writing of the essay.

3. Replace any linking verbs with action verbs. Linking verbs are forms of the verb to be , a verb that simply states that a situation exists.

Working thesis: Kansas City schoolteachers are not paid enough.

Revised thesis: The Kansas City legislature cannot afford to pay its educators, resulting in job cuts and resignations in a district that sorely needs highly qualified and dedicated teachers.

The linking verb in this working thesis statement is the word are . Linking verbs often make thesis statements weak because they do not express action. Rather, they connect words and phrases to the second half of the sentence. Readers might wonder, “Why are they not paid enough?” But this statement does not compel them to ask many more questions. The writer should ask himself or herself questions in order to replace the linking verb with an action verb, thus forming a stronger thesis statement, one that takes a more definitive stance on the issue:

• Who is not paying the teachers enough?
• What is considered “enough”?
• What is the problem?
• What are the results

4. Omit any general claims that are hard to support.

Working thesis: Today’s teenage girls are too sexualized.

Revised thesis: Teenage girls who are captivated by the sexual images on MTV are conditioned to believe that a woman’s worth depends on her sensuality, a feeling that harms their self-esteem and behavior.

It is true that some young women in today’s society are more sexualized than in the past, but that is not true for all girls. Many girls have strict parents, dress appropriately, and do not engage in sexual activity while in middle school and high school. The writer of this thesis should ask the following questions:

• Which teenage girls?
• What constitutes “too” sexualized?
• Why are they behaving that way?
• Where does this behavior show up?
• What are the repercussions?

In the first section of Chapter 8 “The Writing Process: How Do I Begin?” , you determined your purpose for writing and your audience. You then completed a freewriting exercise about an event you recently experienced and chose a general topic to write about. Using that general topic, you then narrowed it down by answering the 5WH questions. After you answered these questions, you chose one of the three methods of prewriting and gathered possible supporting points for your working thesis statement.

Now, on a separate sheet of paper, write down your working thesis statement. Identify any weaknesses in this sentence and revise the statement to reflect the elements of a strong thesis statement. Make sure it is specific, precise, arguable, demonstrable, forceful, and confident.

Collaboration

Please share with a classmate and compare your answers.

In your career you may have to write a project proposal that focuses on a particular problem in your company, such as reinforcing the tardiness policy. The proposal would aim to fix the problem; using a thesis statement would clearly state the boundaries of the problem and tell the goals of the project. After writing the proposal, you may find that the thesis needs revision to reflect exactly what is expressed in the body. Using the techniques from this chapter would apply to revising that thesis.

Key Takeaways

• Proper essays require a thesis statement to provide a specific focus and suggest how the essay will be organized.
• A thesis statement is your interpretation of the subject, not the topic itself.
• A strong thesis is specific, precise, forceful, confident, and is able to be demonstrated.
• A strong thesis challenges readers with a point of view that can be debated and can be supported with evidence.
• A weak thesis is simply a declaration of your topic or contains an obvious fact that cannot be argued.
• Depending on your topic, it may or may not be appropriate to use first person point of view.
• Revise your thesis by ensuring all words are specific, all ideas are exact, and all verbs express action.

Writing for Success Copyright © 2015 by University of Minnesota is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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Definition of thesis noun from the Oxford Advanced Learner's Dictionary

• Students must submit a thesis on an agreed subject within four years.
• He presented this thesis for his PhD.
• a thesis for a master's degree
• He's doing a doctoral thesis on the early works of Shostakovich.
• Many departments require their students to do a thesis defense.
• She completed an MSc by thesis.
• her thesis adviser at MIT
• in a/​the thesis
• thesis about

Take your English to the next level

The Oxford Learner’s Thesaurus explains the difference between groups of similar words. Try it for free as part of the Oxford Advanced Learner’s Dictionary app

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2.4: Writing Thesis Statements

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• Lynne Bost, Barbara Hall, Michelle Kassorla, Karen McKinney-Holley, Kirk Swenson, and Rebecca Weaver (Managing Editor)
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Writing Thesis Statements

To be effective, all support in an essay must work together to convey a central point; otherwise, an essay can fall into the same trap of being out of order and confusing.

Just as a topic sentence focuses and unifies a single paragraph, the thesis statement focuses and unifies an entire essay. This statement is like a signpost that signals the essay's destination; it tells the reader the point you want to make in your essay, while the essay itself supports that point.

Because writing is not a linear process, you may find that the best thesis statement develops near the end of your first draft; however, creating a draft or working thesis early in the writing project helps give the drafting process clear direction. You should form your thesis before you begin to organize an essay, but you may find that it needs revision as the essay develops.

A thesis is not just a topic, but rather the writer's comment or interpretation of the question or subject. For whatever topic you select (for example, school uniforms, social networking), you must ask yourself, "What do I want to say about it?"

Asking and then answering this question is vital to forming a thesis that is precise, forceful and confident.

In the majority of essays, a thesis is one sentence long and appears toward the end of the introduction. It is specific and focuses on one to three points of a single idea--points you are able to demonstrate in the body. It forecasts the content of the essay and suggests how you will organize your information. Remember that a thesis statement does not summarize an issue but rather dissects it.

In sum, a good thesis statement will focus, forecast, and express : It will focus your content, forecast your approach, and express an idea.

Working Thesis Statements

A strong thesis statement must have the following qualities:

• It must be arguable: A thesis statement must state a point of view or judgment about a topic. An established fact is not considered arguable.
• It must be supportable: The thesis statement must contain a point of view that can be supported with evidence (reasons, facts, examples).
• It must be specific: A thesis statement must be precise enough to allow for a coherent argument and remain focused on the topic.

Examples of Appropriate Thesis Statements

• Closing all American borders for a period of five years is one solution that will tackle illegal immigration.
• Compared to an absolute divorce, no-fault divorce is less expensive, promotes fairer settlements, and reflects a more realistic view of the causes for marital breakdown.
• Exposing children from an early age to the dangers of drug abuse is a sure method of preventing future drug addicts.
• In today's crumbling job market, a high school diploma is not significant enough education to land a stable, lucrative job.
• Shakespeare's use of dramatic irony in Romeo and Juliet spoils the outcome for the audience and weakens the plot.
• J. D. Salinger's character in Catcher in the Rye , Holden Caulfield, is a confused rebel who voices his disgust with phonies, yet acts like a phony on many occasions.
• The societal and personal struggles of Troy Maxon in the play Fences symbolize the challenge of black males who lived through segregation and integration in the United States.

Pitfalls to Avoid:

A thesis is weak when it is simply a declaration of your subject or a description of what you will discuss in your essay.

Weak Thesis Statement: My paper will explain why imagination is more important than knowledge.

A thesis is weak when it makes an unreasonable or outrageous claim or insults the opposing side.

Weak Thesis Statement: Religious radicals across America are trying to legislate their Puritanical beliefs by banning required high school books.

A thesis is weak when it contains an obvious fact or something that no one can disagree with or provides a dead end.

Weak Thesis Statement: Advertising companies use sex to sell their products.

A thesis is weak when the statement is too broad.

Weak Thesis Statement: The life of Abraham Lincoln was long and challenging.

Exercise: Thesis Statements, Weak or Strong?

Read the following thesis statements. On a separate piece of paper, identify each as weak or strong.

For those that are weak, list the reasons why.

• The subject of this paper is my experience with ferrets as pets.
• The government must expand its funding for research on renewable energy resources in order to prepare for the impending end of oil.
• Edgar Allan Poe was a poet who lived in Baltimore during the nineteenth century.
• In this essay, I will give you lots of reasons why slot machines should not be legalized in Baltimore.
• Despite his promises during his campaign, President Kennedy took few executive measures to support civil rights legislation.
• Because many children's toys have potential safety hazards that could lead to injury, it is clear that not all children's toys are safe.
• My experience with young children has taught me that I want to be a disciplinary parent because I believe that a child without discipline can be a parent's worst nightmare.

Thesis Statement Revision

Your thesis statement begins as a working thesis statement, an indefinite statement that you make about your topic early in the writing process for the purpose of planning and guiding your writing.

Working thesis statements often become stronger as you gather information and form new opinions and reasons for those opinions. Revision helps you strengthen your thesis so that it matches what you have expressed in the body of the paper.

Ways to Revise Your Thesis

You can cut down on irrelevant aspects and revise your thesis by taking the following steps:

Pinpoint and replace all nonspecific words, such as "people," "everything," " society," or "life," with more precise words in order to reduce any vagueness.

Working Thesis: Young people have to work hard to succeed in life.

Revised Thesis: Recent college graduates must have discipline and persistence in order to find and maintain a stable job in which they can use and be appreciated for their talents.

Explanation: The original includes too broad a range of people and does not define exactly what success entails. By replacing those general words like "people" and "work hard," the writer can better focus his or her research and gain more direction in his or her writing. The revised thesis makes a more specific statement about success and what it means to work hard.

Clarify ideas that need explanation by asking yourself questions that narrow your thesis.

Working Thesis: The welfare system is a joke.

Revised Thesis: The welfare system keeps a socioeconomic class from gaining employment by alluring members of that class with unearned income, instead of programs to improve their education and skill sets.

Explanation: A "joke" means many things to many people. Readers bring all sorts of backgrounds and perspectives to the reading process and would need clarification for a word so vague. This expression may also be too informal for the selected audience. By asking questions, the writer can devise a more precise and appropriate explanation for "joke" and more accurately define his or her stance, which will better guide the writing of the essay.

Replace any linking verbs with action verbs. Linking verbs are forms of the verb "to be," a verb that simply states that a situation exists.

Working Thesis: Kansas City schoolteachers are not paid enough.

Revised Thesis: The Kansas City legislature cannot afford to pay its educators, resulting in job cuts and resignations in a district that sorely needs highly qualified and dedicated teachers.

Explanation: The linking verb in this working thesis statement is the word are. Linking verbs often make thesis statements weak because they do not express action. Rather, they connect words and phrases to the second half of the sentence. Readers might wonder, "Why are they not paid enough?" But this statement does not compel them to ask many more questions. Asking questions will help you replace the linking verb with an action verb, thus forming a stronger thesis statement that takes a more definitive stance on the issue:

• Who is not paying the teachers enough?
• What is considered "enough?"
• What is the problem?
• What are the results?

Omit any general claims that are hard to support.

Working Thesis: Today's teenage girls are too sexualized.

Revised Thesis: Teenage girls who are captivated by the sexual images on MTV are conditioned to believe that a woman's worth depends on her sensuality, a feeling that harms their self-esteem and behavior.

Explanation: It is true that some young women in today's society are more sexualized than in the past, but that is not true for all girls. Many girls have strict parents, dress appropriately, and do not engage in sexual activity while in middle school and high school. The writer of this thesis should ask the following questions:

• Which teenage girls?
• What constitutes "too" sexualized?
• Why are they behaving that way?
• Where does this behavior show up?
• What are the repercussions?

Exercise: Practice Thesis Statements

On a separate sheet of paper, write a thesis statement for each of the following topics. Remember to make each statement

• demonstrable,
• forceful, and
• Texting while driving
• The legal drinking age in the United States
• Legalizing Marijuana for recreational use

Thesis Statements

• Proper essays require a thesis statement to provide a specific focus and suggest how the essay will be organized.
• A thesis statement is your interpretation of the subject, not the topic itself.
• A strong thesis is specific, precise, forceful, confident, and is able to be demonstrated.
• A strong thesis challenges readers with a point of view that can be debated and can be supported with evidence.
• A weak thesis is simply a declaration of your topic or contains an obvious fact that cannot be argued.
• Depending on your topic, it may or may not be appropriate to use first person point of view.
• Revise your thesis by ensuring all words are specific, all ideas are exact, and all verbs express action.

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Grammar: Verb Tenses

Most common verb tenses in academic writing.

According to corpus research, in academic writing, the three tenses used the most often are the simple present , the simple past , and the present perfect (Biber et al., 1999; Caplan, 2012). The next most common tense for capstone writers is the future ; the doctoral study/dissertation proposal at Walden is written in this tense for a study that will be conducted in the future.

Biber, D., Johansson, S., Leech, G., Conrad, S., & Finegan, E. (1999). Longman grammar of written and spoken English . Pearson. https://doi.org/10.1162/089120101300346831

Caplan, N. A. (2012). Grammar choices for graduate and professional writers . University of Michigan Press.

Simple present: Use the simple present to describe a general truth or a habitual action. This tense indicates that the statement is generally true in the past, present, and future.

• Example: The hospital admits patients whether or not they have proof of insurance.

Simple past : Use the simple past tense to describe a completed action that took place at a specific point in the past (e.g., last year, 1 hour ago, last Sunday). In the example below, the specific point of time in the past is 1998.

• Example: Zimbardo (1998) researched many aspects of social psychology.

Present perfect: Use the present perfect to indicate an action that occurred at a nonspecific time in the past. This action has relevance in the present. The present perfect is also sometimes used to introduce background information in a paragraph. After the first sentence, the tense shifts to the simple past.

• Example: Numerous researchers have used this method.
• Example: Many researchers have studied how small business owners can be successful beyond the initial few years in business. They found common themes among the small business owners.

Future: Use the future to describe an action that will take place at a particular point in the future (at Walden, this is used especially when writing a proposal for a doctoral capstone study).

• Example: I will conduct semistructured interviews.

Keep in mind that verb tenses should be adjusted after the proposal after the research has been completed. See this blog post about Revising the Proposal for the Final Capstone Document for more information.

APA Style Guidelines on Verb Tense

APA calls for consistency and accuracy in verb tense usage (see APA 7, Section 4.12 and Table 4.1). In other words, avoid unnecessary shifts in verb tense within a paragraph or in adjacent paragraphs to help ensure smooth expression.

• Use the past tense (e.g., researchers presented ) or the present perfect (e.g., researchers have presented ) for the literature review and the description of the procedure if discussing past events.
• Use the past tense to describe the results (e.g., test scores improved significantly).
• Use the present tense to discuss implications of the results and present conclusions (e.g., the results of the study show …).

When explaining what an author or researcher wrote or did, use the past tense.

• Patterson (2012) presented, found, stated, discovered…

However, there can be a shift to the present tense if the research findings still hold true:

• King (2010) found  that revising a document three times improves the final grade.
• Smith (2016) discovered that the treatment is effective.

Verb Tense Guidelines When Referring to the Document Itself

To preview what is coming in the document or to explain what is happening at that moment in the document, use the present or future tense:

• In this study, I will describe …
• In this study, I describe …
• In the next chapter, I will discuss …
• In the next chapter, I discuss …

To refer back to information already covered, such as summaries of discussions that have already taken place or conclusions to chapters/sections, use the past tense:

• Chapter 1 contained my original discussion of the research questions.
• In summary, in this section, I presented information on…

Simple Past Versus the Present Perfect

Rules for the use of the present perfect differ slightly in British and American English. Researchers have also found that among American English writers, sometimes individual preferences dictate whether the simple past or the present perfect is used. In other words, one American English writer may choose the simple past in a place where another American English writer may choose the present perfect.

Keep in mind, however, that the simple past is used for a completed action.  It often is used with signal words or phrases such as "yesterday," "last week," "1 year ago," or "in 2015" to indicate the specific time in the past when the action took place.

• I went to China in 2010 .
• He completed the employee performance reviews last month .

The present perfect focuses more on an action that occurred without focusing on the specific time it happened. Note that the specific time is not given, just that the action has occurred.

• I have travelled to China.

The present perfect focuses more on the result of the action.

• He has completed the employee performance reviews.

The present perfect is often used with signal words such as "since," "already," "just," "until now," "(not) yet," "so far," "ever," "lately," or "recently."

• I have already travelled to China.
• He has recently completed the employee performance reviews.
• Researchers have used this method since it was developed.

Summary of English Verb Tenses

The 12 main tenses:

• Simple present : She writes every day.
• Present progressive: She is writing right now.
• Simple past : She wrote last night.
• Past progressive: She was writing when he called.
• Simple future : She will write tomorrow.
• Future progressive: She will be writing when you arrive.
• Present perfect : She has written Chapter 1.
• Present perfect progressive: She has been writing for 2 hours.
• Past perfect: She had written Chapter 3 before she started Chapter 4.
• Past perfect progressive: She had been writing for 2 hours before her friends arrived.
• Future perfect: She will have written Chapter 4 before she writes Chapter 5.
• Future perfect progressive: She will have been writing for 2 hours by the time her friends come over.

Conditionals:

Zero conditional (general truths/general habits).

• Example: If I have time, I write every day.

First conditional (possible or likely things in the future).

• Example: If I have time, I will write every day.

Second conditional (impossible things in the present/unlikely in the future).

• Example : If I had time, I would write every day.

Third conditional (things that did not happen in the past and their imaginary results)

• Example : If I had had time, I would have written every day.

Subjunctive : This form is sometimes used in that -clauses that are the object of certain verbs or follow certain adjectives. The form of the subjective is the simple form of the verb. It is the same for all persons and number.

• Example : I recommend that he study every day.
• Example: It is important that everyone set a writing schedule.

Verbs Video Playlist

Note that these videos were created while APA 6 was the style guide edition in use. There may be some examples of writing that have not been updated to APA 7 guidelines.

• Grammar for Academic Writers: Common Verb Tenses in Academic Writing (video transcript)
• Grammar for Academic Writers: Verb Tense Consistency (video transcript)
• Grammar for Academic Writers: Advanced Subject–Verb Agreement (video transcript)
• Mastering the Mechanics: Helping Verbs (video transcript)
• Mastering the Mechanics: Past Tense (video transcript)
• Mastering the Mechanics: Present Tense (video transcript)
• Mastering the Mechanics: Future Tense (video transcript)

Related Resources

Knowledge Check: Verb Tenses

Didn't find what you need? Email us at [email protected] .

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Purdue Online Writing Lab Purdue OWL® College of Liberal Arts

Tips and Examples for Writing Thesis Statements

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Tips for Writing Your Thesis Statement

1. Determine what kind of paper you are writing:

• An analytical paper breaks down an issue or an idea into its component parts, evaluates the issue or idea, and presents this breakdown and evaluation to the audience.
• An expository (explanatory) paper explains something to the audience.
• An argumentative paper makes a claim about a topic and justifies this claim with specific evidence. The claim could be an opinion, a policy proposal, an evaluation, a cause-and-effect statement, or an interpretation. The goal of the argumentative paper is to convince the audience that the claim is true based on the evidence provided.

If you are writing a text that does not fall under these three categories (e.g., a narrative), a thesis statement somewhere in the first paragraph could still be helpful to your reader.

2. Your thesis statement should be specific—it should cover only what you will discuss in your paper and should be supported with specific evidence.

3. The thesis statement usually appears at the end of the first paragraph of a paper.

4. Your topic may change as you write, so you may need to revise your thesis statement to reflect exactly what you have discussed in the paper.

Thesis Statement Examples

Example of an analytical thesis statement:

The paper that follows should:

• Explain the analysis of the college admission process
• Explain the challenge facing admissions counselors

Example of an expository (explanatory) thesis statement:

• Explain how students spend their time studying, attending class, and socializing with peers

Example of an argumentative thesis statement:

• Present an argument and give evidence to support the claim that students should pursue community projects before entering college

• Cambridge Dictionary +Plus

Verbs: basic forms

Verbs: the three basic forms.

Main verbs have three basic forms: the base form, the past form and the -ed form (sometimes called the ‘ -ed participle’):

base form : used as the infinitive form, with to or without to ( Do you want to come with us? I can’t leave now .) and for the present simple ( I always read before I go to sleep every night .) except third person singular, which uses the - s form ( She works at the university .)

past form : used for the past simple ( He opened the door and went out .)

-ed form : used after auxiliary have and be ( I ’ve always wanted a piano and I was given one last week .).

How dictionaries show the forms

The base form is normally the form used as a heading in a dictionary. Here is a typical dictionary entry for a verb. The base form is sing , the past form is sang and the -ed form is sung :

Examples of the three basic forms

When you look up a verb in the dictionary, you will often find the three forms listed together, especially for irregular verbs. Here are some examples (regular verbs are printed in blue; irregular verbs are printed in black).

Pronunciation and meaning

Some verbs have a similar pronunciation but a different meaning:

We love to just lie on the beach.

Not: We love to just lay on the beach .

Lie/lay/lain is used without an object. Lay/laid/laid must have an object: e.g. I’ll lay the table then we can eat .

Other verbs like this are: affect/effect, bare/bear, fine/find, note/notice , raise/rise .

Sometimes a verb is confused with another word which sounds similar but is from a different word class:

I don’t want to lose contact with my school friends.

Not: I don’t want to loose contact with my school friends .

( Lose is a verb. Loose is an adjective, e.g. These shoes are too loose ; I need a smaller size .)

Other pairs like this are: advise (verb)/ advice (noun), practise (verb)/ practice (noun).

Regular verbs

Most verbs in English are regular. Regular verbs add -ing to the base form to make the - ing form, and -ed to the base form to make the past simple and the -ed form.

Base forms which end in - e

If the base form already ends in -e (e.g. move, face, like ), then -d is added to make the past form and the -ed form. The final - e is not used in the -ing form.

Base forms which end in a consonant plus -y

If the base form ends in a consonant plus -y (e.g. carry, hurry, study, try, worry ), then -y changes to -ied to make the past form and the -ed form. The - y ending does not change in the -ing form.

Base forms which end in vowel + single consonant

If the base form ends in a vowel followed by a single consonant and if the last syllable is stressed (e.g. begin , drop, occur, refer, run, shop, stop, transfer ), then the consonant is doubled. If the last syllable is not stressed (e.g. benefit, happen, open, order, profit ), then the consonant is not doubled. (Stressed syllables are underlined in the table.)

The consonant is doubled if the base form ends in a vowel + l , whether the last syllable is stressed or not.

Person, number and tense

Regular verbs all use the same endings to indicate person (first, second or third), number (singular or plural) and tense (present simple or past simple).

Person (first/second/third)

Person relates to the type of subject. I and we indicate the first person, you (singular and plural) indicates the second person and he, she, it, they and noun subjects indicate the third person. Regular verbs have the same form for all persons, but third person singular present simple ends in -s :

I love Japanese food.

My sister live s with two other students.

They worked for a French company based in London.

She arrived at the office around nine o’clock most days.

Number (singular/plural)

Number indicates whether the subject is singular or plural. Regular verbs have the same form for singular and plural, but third person singular present simple ends in -s :

We love historical dramas on TV.

They lived in a huge house in the country somewhere.

He work s terribly hard.

He always arrived late.

Tense (present/past)

Tense indicates whether the verb is present or past. The past simple of regular verbs ends in -ed for all persons and numbers:

They loved everything about Australia.

She lived in Spain for a couple of years.

I worked on Saturday so I stayed at home on Monday.

The police arrived within minutes.

We always need an e in the -ed form (past simple and -ed form) of regular verbs:

I don’t know what happened at the last meeting.

Not: I don’t know what happend at the last meeting .

Other verbs which are often misspelt in this way are: bother, complain, consider, join, recover, remain .

The - es ending

If the verb ends in -ch, -s, -ss , - sh, -x or -z , then -es is added to make the third person singular present simple.

Present simple ( I work )

Past simple ( I worked )

Subject–verb agreement

Irregular verbs

Irregular verbs follow the same rules as regular verbs for the present simple but have different forms for the past simple and the -ed form.

Some irregular verbs have the same form for the base, the past simple and the -ed form, e.g. hit, hit, hit; let, let, let; put, put, put .

Some irregular verbs share a form for the past simple and -ed form which is different from the base form, e.g. bring, brought, brought; feel, felt, felt; have, had, had .

Some irregular verbs have a base form which ends in -d and a past simple and -ed form which end in -t , e.g. bend, bent, bent; build, built, built; send, sent, sent; spend, spent, spent .

Some irregular verbs have a different form for the base form, the past simple and the -ed form, e.g. drink, drank, drunk; go, went, gone; take, took, taken .

The verb be has different forms for different persons in the present simple and past simple.

Word of the Day

hit the road

to leave a place or begin a journey

Searching out and tracking down: talking about finding or discovering things

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How to Use Verbs Effectively in Your Research Paper

• Writing Research Papers
• Writing Essays
• English Grammar
• M.Ed., Education Administration, University of Georgia
• B.A., History, Armstrong State University

When you conduct a research project, one part of your job is to assert your own original thesis with an effective argument . There are a few ways to enhance your research paper so it sounds more impressive. One method to sound convincing as an authority is to elevate your vocabulary by using strong verbs.

Remember, verbs are action words . The verbs you select for your writing should represent a specific action . This means you should avoid generic verbs to keep your writing interesting and sharp. Your goal is to keep teacher or audience interested.

Try to avoid these less exciting verbs:

How to Choose Your Verbs

No matter what your grade level, you must do your best to come across as an authority on your topic. Think about the noticeable difference in these statements:

• I saw more mold on one piece of bread.
• I observed a distinct difference between the two pieces of bread. Most importantly, one piece of bread displayed a greater density of mold.

The second statement sounds more mature, because we replaced "saw" with "observed" and "had" with "displayed." In fact, the verb "observe " is more accurate. When carrying out a scientific experiment, after all, you use more than mere eyesight to scrutinize your results. You may smell, hear, or feel some results, and those are all part of observing.

Now consider these statements when writing a history essay:

• Historian Robert Dulvany says there were three main causes for the war.
• Historian Robert Dulvany asserted that three events prompted the war.

The second phrase sounds more authoritative and direct. And it's the verbs that make all the difference.

Also, make sure to use active rather than passive structure with your verbs. Active verbs make your writing clearer and more engaging. Review these statements:

• T he war on terror was launched by the United States.
• The United States launched the war on terror. 

The subject-verb construction is a more active and powerful statement.

How to Sound Like an Authority

Each discipline (like history, science or literature) has a distinct tone with certain verbs that appear frequently. As you read over your sources, observe the tone and language. 

While reviewing the first draft of your research paper, conduct an inventory of your verbs. Are they tired and weak or strong and effective? This list of verbs provides suggestions to make your research paper sound more authoritative.

• Questions for Each Level of Bloom's Taxonomy
• Powerful Verbs for Your Writing
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• Ethos, Logos, Pathos for Persuasion
• How to Write a Solid Thesis Statement
• How to Narrow the Research Topic for Your Paper
• 14 Ways to Write Better in High School
• AP English Exam: 101 Key Terms
• College Essay Style Tips
• Overused and Tired Words
• Make Your Paragraphs Flow to Improve Writing
• 11 Quick Tips to Improve Your Writing
• What Is a Research Paper?
• A History of the French Revolution: the Reign of Terror

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• The Three Common Tenses Used in Academic Writing

  He explains the author’s intention and purpose in the article.

*He is explaining the author’s intention and purpose in the article.

Both of the sentences above are grammatically correct. However, the tense used in first sentence (present simple) is more common for academic writing than the tense in the second sentence (present progressive). This handout provides the overview of three tenses that are usually found in academic writing. 

There are three tenses that make up 98% of the tensed verbs used in academic writing. The most common tense is present simple, followed by past simple and present perfect. These tenses can be used both in passive and active voice. Below are the main functions that these three tenses have in academic writing.

The Present Simple Tense

Present simple is the most common tense in academic writing, and it is usually considered as the “default” unless there is a certain reason to choose another tense (e.g. a sentence contains a past time marker). Some specific functions of present simple include:

The Past Simple Tense

Generally, past simple is used to refer to actions completed in the past. Some specific functions this tense has in academic writing include:

The Present Perfect Tense

Present perfect is usually used when referring to previous research, and since it is a present tense, it indicates that the findings are relevant today. More specifically, this tense might have the following functions:

Common Questions about Tense in Academic Writing

Question: Can tenses change in the same paragraph or sentence?

Explanation: Yes, there are some times where it is appropriate to switch tense within a paragraph or sentence. However, you have to have a good reason for it.  For instance, a shift in time marked by an adverb or prepositional phrase (e.g. since, in 2013, until ) or when you move from general statements to specific examples from research (one of the functions mentioned above).

Question : Are other verb tenses used in academic writing?

Explanation : Yes, although not as common, other tenses are used in academic writing as well. For example, when expressing strong predictions about the future, the future simple tense is used, or when describing events that undergo changes at the time of writing, present progressive is used.

Read the excerpt and notice the tenses used for each verb. Identify the function of each tense as illustrated in the first sentence.  

Approximately 10% of the population is diagnosed (present simple, function 4) with dyslexia (Habib, 2000). Specialized testing most often reveals this disability in third grade or later, when there develops an observable differential between reading achievement and IQ (Wenar & Kerig, 2000). This late identification poses severe problems for effective remediation. At the time of diagnosis, poor readers are on a trajectory of failure that becomes increasingly difficult to reverse. Attempts at intervention must both focus on remediation of the impaired components of reading as well as extensive rehabilitation to reverse the growing experience differential. 

Educators and researchers are aware of the need for early diagnosis. In response, research investigating early correlates of later reading ability/disability has burgeoned (e.g. Wagner et al., 1997). However, these early reading studies primarily focus on school age children (e.g. Share et al., 1984). To date, only a few studies have focused on the reading trajectories of children younger than preschool, and there is little consistency within the existing studies (e.g. Scarborough, 1990, 1991). 

In the current study, we trace the development of the two aspects of the phonological processing deficit in a longitudinal follow-up study of two-year-olds. Shatz et al. (1996, 1999, 2001) investigated the underlying lexical structure in two-year-old children. Although their experiments were tailored to examine early word learning behavior, their study design is uniquely suited to looking at the phonological processing skills of two-year old children as well. In this study, we measure the early reading skills of these same two-year-olds at five to seven years of age in order to determine the predictivity of the early two-year old behaviors for later reading ability. 

Adapted from Michigan Corpus of Upper-level Student Papers. (2009). Ann Arbor, MI: The Regents of the University of Michigan.

Approximately 10% of the population is diagnosed (pres. simp. F4) with dyslexia (Habib, 2000). Specialized testing most often reveals (pres. simp. F4) this disability in third grade or later, when there develops (pres. simp. F4) an observable differential between reading achievement and IQ (Wenar & Kerig, 2000). This late identification poses (pres. simp. F3) severe problems for effective remediation. At the time of diagnosis, poor readers are (pres. simp. F3) on a trajectory of failure that becomes (pres. simp. F3) increasingly difficult to reverse. Attempts at intervention must both focus on remediation of the impaired components of reading as well as extensive rehabilitation to reverse the growing experience differential. 

Educators and researchers are (pres. simp. F1) aware of the need for early diagnosis. In response, research investigating early correlates of later reading ability/disability has burgeoned (pres. perf. F1) (e.g. Wagner et al., 1997). However, these early reading studies primarily focus (pres. simp. F3) on school age children (e.g. Share et al., 1984). To date, only a few studies have focused (pres. perf. F3) on the reading trajectories of children younger than preschool, and there is (pres. simp. F3) little consistency within the existing studies (e.g. Scarborough, 1990, 1991). 

In the current study, we trace (pres. simp. F2) the development of the two aspects of the phonological processing deficit in a longitudinal follow-up study of two-year-olds. Shatz et al. (1996, 1999, 2001) investigated (past. simp. F1) the underlying lexical structure in two-year-old children. Although their experiments were tailored (past. simp. F1) to examine early word learning behavior, their study design is uniquely suited (pres. simp. F3) to looking at the phonological processing skills of two-year old children as well. In this study, we measure (pres. simp. F2) the early reading skills of these same two-year-olds at five to seven years of age in order to determine the predictivity of the early two-year old behaviors for later reading ability. 

The information in this handout is adapted from Caplan, N. (2015). Grammar choices for graduate and professional writers . Ann Arbor: University of Michigan Press. 

Last updated 12/20/2017

Grammar & Style

• Converting Fragments to Full Sentences
• Active and Passive Voice
• Choosing Between Infinitive and Gerund: “To do” or “doing”?
• Choosing the Correct Word Form
• Combining Clauses to Avoid Comma Splices, Run-ons, and Fragments
• Commas, Semicolons, and Colons
• Count vs. Noncount Nouns
• Definite and Indefinite Articles
• Improving Cohesion: The "Known/New Contract"
• Modal Verbs
• Parallel Structure
• Prepositions
• Proper Nouns
• Reducing Informality in Academic Writing
• Run-on Sentences
• Same Form, but Different Functions: Various Meanings of Verb+ing and Verb+ed
• Subject-Verb Agreement
• Using Reduced Relative Clauses to Write Concisely
• Verb Tenses
• Word Order in Statements with Embedded Questions

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• Verb Tenses in Academic Writing | Rules, Differences & Examples

Verb Tenses in Academic Writing | Rules, Differences & Examples

Published on 20 October 2022 by Shane Bryson . Revised on 11 September 2023.

Tense communicates an event’s location in time. The different tenses are identified by their associated verb forms. There are three main verb tenses: past ,  present , and  future .

In English, each of these tenses can take four main aspects:  simple ,  perfect ,  continuous  (also known as  progressive ), and  perfect continuous . The perfect aspect is formed using the verb  to have , while the continuous aspect is formed using the verb  to be .

In academic writing , the most commonly used tenses are the  present simple , the  past simple , and the  present perfect .

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Table of contents

Tenses and their functions, when to use the present simple, when to use the past simple, when to use the present perfect, when to use other tenses.

The table below gives an overview of some of the basic functions of tenses and aspects. Tenses locate an event in time, while aspects communicate durations and relationships between events that happen at different times.

It can be difficult to pick the right verb tenses and use them consistently. If you struggle with verb tenses in your thesis or dissertation , you could consider using a thesis proofreading service .

The only proofreading tool specialized in correcting academic writing

The academic proofreading tool has been trained on 1000s of academic texts and by native English editors. Making it the most accurate and reliable proofreading tool for students.

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The present simple is the most commonly used tense in academic writing, so if in doubt, this should be your default choice of tense. There are two main situations where you always need to use the present tense.

Describing facts, generalisations, and explanations

Facts that are always true do not need to be located in a specific time, so they are stated in the present simple. You might state these types of facts when giving background information in your introduction .

• The Eiffel tower  is in Paris.
• Light  travels faster than sound.

Similarly, theories and generalisations based on facts are expressed in the present simple.

• Average income differs by race and gender.
• Older people express less concern about the environment than younger people.

Explanations of terms, theories, and ideas should also be written in the present simple.

• Photosynthesis  refers to  the process by which plants  convert sunlight into chemical energy.
• According to Piketty (2013), inequality grows over time in capitalist economies.

Describing the content of a text

Things that happen within the space of a text should be treated similarly to facts and generalisations.

This applies to fictional narratives in books, films, plays, etc. Use the present simple to describe the events or actions that are your main focus; other tenses can be used to mark different times within the text itself.

• In the first novel, Harry learns he is a wizard and travels  to Hogwarts for the first time, finally escaping the constraints of the family that raised him.

The events in the first part of the sentence are the writer’s main focus, so they are described in the present tense. The second part uses the past tense to add extra information about something that happened prior to those events within the book.

When discussing and analyzing nonfiction, similarly, use the present simple to describe what the author does within the pages of the text ( argues , explains , demonstrates , etc).

• In The History of Sexuality , Foucault asserts that sexual identity is a modern invention.
• Paglia (1993) critiques Foucault’s theory.

This rule also applies when you are describing what you do in your own text. When summarising the research in your abstract , describing your objectives, or giving an overview of the  dissertation structure in your introduction, the present simple is the best choice of tense.

• This research  aims to synthesise the two theories.
• Chapter 3 explains  the methodology and discusses ethical issues.
• The paper  concludes with recommendations for further research.

The past simple should be used to describe completed actions and events, including steps in the research process and historical background information.

Reporting research steps

Whether you are referring to your own research or someone else’s, use the past simple to report specific steps in the research process that have been completed.

• Olden (2017) recruited 17 participants for the study.
• We transcribed and coded the interviews before analyzing the results.

The past simple is also the most appropriate choice for reporting the results of your research.

• All of the focus group participants agreed  that the new version  was an improvement.
• We  found a positive correlation between the variables, but it  was not as strong as we  hypothesised .

Describing historical events

Background information about events that took place in the past should also be described in the past simple tense.

• James Joyce  pioneered the modernist use of stream of consciousness.
• Donald Trump’s election in 2016  contradicted the predictions of commentators.

The present perfect is used mainly to describe past research that took place over an unspecified time period. You can also use it to create a connection between the findings of past research and your own work.

Summarising previous work

When summarising a whole body of research or describing the history of an ongoing debate, use the present perfect.

• Many researchers  have investigated the effects of poverty on health.
• Studies  have shown a link between cancer and red meat consumption.
• Identity politics has been a topic of heated debate since the 1960s.
• The problem of free will  has vexed philosophers for centuries.

Similarly, when mentioning research that took place over an unspecified time period in the past (as opposed to a specific step or outcome of that research), use the present perfect instead of the past tense.

• Green et al.  have conducted extensive research on the ecological effects of wolf reintroduction.

Emphasising the present relevance of previous work

When describing the outcomes of past research with verbs like fi nd ,  discover or demonstrate , you can use either the past simple or the present perfect.

The present perfect is a good choice to emphasise the continuing relevance of a piece of research and its consequences for your own work. It implies that the current research will build on, follow from, or respond to what previous researchers have done.

• Smith (2015) has found that younger drivers are involved in more traffic accidents than older drivers, but more research is required to make effective policy recommendations.
• As Monbiot (2013)  has shown , ecological change is closely linked to social and political processes.

Note, however, that the facts and generalisations that emerge from past research are reported in the present simple.

While the above are the most commonly used tenses in academic writing, there are many cases where you’ll use other tenses to make distinctions between times.

Future simple

The future simple is used for making predictions or stating intentions. You can use it in a research proposal  to describe what you intend to do.

It is also sometimes used for making predictions and stating hypotheses . Take care, though, to avoid making statements about the future that imply a high level of certainty. It’s often a better choice to use other verbs like  expect ,  predict,  and  assume to make more cautious statements.

• There  will be a strong positive correlation.
• We  expect  to find a strong positive correlation.
• H1  predicts a strong positive correlation.

Similarly, when discussing the future implications of your research, rather than making statements with will,  try to use other verbs or modal verbs that imply possibility ( can ,  could ,  may ,  might ).

• These findings  will influence  future approaches to the topic.
• These findings  could influence future approaches to the topic.

Present, past, and future continuous

The continuous aspect is not commonly used in academic writing. It tends to convey an informal tone, and in most cases, the present simple or present perfect is a better choice.

• Some scholars are suggesting that mainstream economic paradigms are no longer adequate.
• Some scholars suggest   that mainstream economic paradigms are no longer adequate.
• Some scholars have suggested   that mainstream economic paradigms are no longer adequate.

However, in certain types of academic writing, such as literary and historical studies, the continuous aspect might be used in narrative descriptions or accounts of past events. It is often useful for positioning events in relation to one another.

• While Harry is traveling to Hogwarts for the first time, he meets many of the characters who will become central to the narrative.
• The country was still recovering from the recession when Donald Trump was elected.

Past perfect

Similarly, the past perfect is not commonly used, except in disciplines that require making fine distinctions between different points in the past or different points in a narrative’s plot.

Sources for this article

We strongly encourage students to use sources in their work. You can cite our article (APA Style) or take a deep dive into the articles below.

Bryson, S. (2023, September 11). Verb Tenses in Academic Writing | Rules, Differences & Examples. Scribbr. Retrieved 14 May 2024, from https://www.scribbr.co.uk/english-language/verb-tenses/

Aarts, B. (2011).  Oxford modern English grammar . Oxford University Press.

Butterfield, J. (Ed.). (2015).  Fowler’s dictionary of modern English usage  (4th ed.). Oxford University Press.

Garner, B. A. (2016).  Garner’s modern English usage (4th ed.). Oxford University Press.

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Shane Bryson

Shane finished his master's degree in English literature in 2013 and has been working as a writing tutor and editor since 2009. He began proofreading and editing essays with Scribbr in early summer, 2014.

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Grammar In PhD Theses – Adjectives & Tense, Voice & Contractions of Verbs

Posted by Rene Tetzner | Oct 31, 2021 | PhD Success | 0 |

5.4.6 Adjectives, Adverbs and Split Infinitives

Adjectives and adverbs are often overused when authors are attempting to be precise, with long strings of adjectives particularly common in some theses, so do check for this while proofreading your draft and pay special attention to instances in which you may have used a large number of adjectival nouns. In almost all cases, it is best to use as few adjectives as possible, and such a policy can lead to the use of more precise or expressive adjectives, which is always preferable. When you decide that several adjectives are definitely required, be sure to punctuate them effectively and in a consistent manner throughout your thesis (see Section 5.6.1). Adverbs are especially problematic when they split the infinitive forms of English verbs. In most languages, the infinitive of a verb is a single word: the infinitive forms of the famous Latin phrase ‘veni, vidi, vici (I came, I saw, I conquered),’ for instance, are ‘venire,’ ‘videre’ and ‘vincere.’ In English, however, the infinitives of verbs are formed through the addition of ‘to’ – ‘to come, to see, to conquer’ – and the two elements of the infinitive (‘to’ and ‘conquer’) should no sooner be separated from each other in formal writing than should the ‘ – ire’ or ‘ – ere’ ending be separated from the stem of one of the Latin infinitives. Infinitives are usually split by an adverb inserted between the two parts of the verb (as in Star Trek ’s famous ‘to boldly go’), and such split infinitives sometimes sound entirely natural because they tend to be used daily in casual speech and informal written communications. In the twenty-first century, split infinitives are even tolerated in scholarly prose (though not by all university departments and thesis committees), so if you find that you simply cannot do without an adverb and yet it proves impossible to word the sentence effectively without splitting the infinitive, the adverb can in some cases be retained within the infinitive of the verb. Some readers still consider split infinitives incorrect grammar, however, so do check with your supervisor, keep such usage to a minimum in your thesis and remember that the safest policy is to reword split infinitives whenever possible, replacing ‘to successfully write a thesis,’ for instance, with ‘to write a thesis successfully.’ Rewording sentences containing split infinitives will no doubt prove challenging at times, and in certain instances a sentence may have to be thoroughly rewritten to accommodate a necessary adverb or adverbial phrase more effectively, but do make your best effort before deciding to retain a split infinitive.

5.4.7 Verbs: Tense, Voice and Contractions

The correct use of verb tenses (present, perfect, pluperfect etc.) can be tricky and thus problematic at times. The nuances of the various tenses communicate different temporal messages, and the temporal message of each verb should accurately reflect the reality reported, be consistent with other verbs expressing similar temporal messages and change according to the nature of the content. The problem is complicated in scholarly prose because referring accurately and effectively to the ideas and results found in sources can be challenging. As a general rule, much of what is said in previous scholarship can be referred to in the present tense: for example, ‘Taylor (1996) argues that’ and ‘according to Fergusson (2013), the argument is.’ However, when studies done at different times are compared or contrasted, the tense will need to be varied: ‘Taylor (1996) argued [perfect] that the problem could not be overcome, but Fergusson (2013) sheds [present] new light on the situation.’ Often using a compound form with ‘has’ or ‘have’ is more effective than a simple past or perfect tense when speaking of scholarly trends or developments: for instance, ‘several studies of the problem have been published since the 1980s.’ However, studies that are already published were in fact conducted in the past, so the perfect tense, too, can be correctly used when referring to sources and their authors: for example, ‘Fergusson (2013) explored the problem by following the recommendations of Taylor (1996).’ Sensitivity to the expression of temporal reality through appropriate verb tenses should be applied not just to the discussion of sources, but to the whole of your thesis.

The use of the passive rather than the active voice can also present problems in formal scholarly prose. In the active voice, a subject is clearly stated and the verb is active: ‘I investigated the use of domestic robots among elderly residents of the Sunset Manor.’ In the passive voice, on the other hand, the object becomes the subject and the verb is passive: ‘The use of domestic robots among elderly residents of the Sunset Manor was investigated.’ Both sentences are correct English, but because the passive voice does not name the person (or people) doing the investigating, it can fail to convey with precision who did the research – the author of the present thesis as part of the current study, for instance, or a third party (or parties) working at some other time who ought to be cited? Some doctoral candidates will deliberately use the passive voice in an abstract, perhaps due to a misconception that the passive voice is scholarly, but a scholarly voice is never vague as the passive voice can be, and some guidelines will ask that the passive voice be avoided, especially in abstracts where precision expressed via as few words as possible is particularly important. However, the passive voice can be used effectively (and often is in the sciences) when the point is to emphasise the object of research rather than the agent doing the research, so do check university and department guidelines and/or ask your supervisor about the use of the passive voice. When proofreading your thesis draft, pay careful attention to what sentences using the passive voice actually say and do not say, and whenever you think that such sentences might prove imprecise, ineffective or confusing for your readers, reword them using the active voice.

Contractions of verbs, which are frequently used in casual speech, often slip into formal prose, especially when an author is writing quickly as he or she thinks through problems. Examples include ‘didn’t’ (for ‘did not’), ‘shouldn’t’ (for ‘should not’), ‘won’t’ (for ‘will not’), ‘can’t’ (for ‘cannot’) and ‘wouldn’t’ (for ‘would not’) in which a verb is combined with the word ‘not,’ as well as verbs combined with pronouns such as ‘I’ll’ (for ‘I will’), ‘he’s’ (for ‘he is’ or ‘he has’), ‘it’s’ (for ‘it is’ or ‘it has’) and ‘they’re’ (for ‘they are’). Such contractions are not considered scholarly and should only be used in your thesis when you are accurately quoting direct speech and similar informal text from sources that use contractions (I use them in some of my examples, for instance). In your own prose, however, all such contractions should be expanded, so do watch for these as you proofread your chapter drafts. For more information on contractions, including those that are acceptable in scholarly prose, see Section 5.6.3.

5.4.8 Consistency and Variation in Word Use

It is important to strike a balance between consistency and variation in the vocabulary used in a thesis. While variety can contribute to an interesting writing style and is important for retaining the reader’s interest, precision and consistency are absolutely essential to reporting results and presenting an argument effectively, so it is always better to tip the scales in favour of clear communication. Many minor words in a sentence can easily be changed or eliminated to create variety and avoid repetition without altering the meaning of your text, but if you vary or eliminate terms that define important aspects and elements of your research, methodology and argument or that report the precise results of tests and trials, ambiguity and misinterpretation can result. In the case of comparison, for instance, the exact details of each side of a comparison or contrast should be clearly outlined, and a sentence such as ‘I compared the scores the executives earned in the third trial with the employees’ is confusing and simply wrong: the scores earned by the executives were no doubt compared with the scores earned by the employees (not the employees themselves), and the employees’ scores were probably obtained in a numbered trial as well, so the reader needs more precise information. A statement such as ‘purple hats were given to half of the executives, but yellow to employees’ is also problematic. The reader can easily supply the verb (‘were given’) missing from the second half of the sentence and it is also fairly clear that ‘yellow’ stands for ‘yellow hats,’ but he or she may be wondering ‘to how many employees?’ Does the author mean that hats were given to half of the employees or to all employees included in the study? Clearly, further explanation is needed here as well, and the use of specific numbers and percentages would probably be far more effective. Finally, the terms and definitions used for specific concepts and categories should remain consistent throughout a thesis, especially when those concepts and categories are central to the study or argument: for example, if the study groups have been introduced as ‘smokers group,’ ‘nonsmokers group’ and ‘control group,’ that terminology should not change part way through the thesis or be different in tables and figures that accompany the thesis; and if questionnaires are labelled A, B and C, they should not be referred to without the letters or via numbers instead because such references can increase the possibility of unnecessary confusion.

PRS Tip: The well-educated proofreaders at PRS are specialists in a variety of disciplines and experts in the English language. They know how scholarly writing in English should read because they are scholars, and some of them have published their own academic or scientific writing. So there is a great deal they can do to help you make your scholarly voice just what it should be, but it is essential that you do everything you can to ensure that your vocabulary, grammar and syntax are as correct and clear as possible before you send your thesis or proposal chapters for proofreading. Remember that if a seasoned professional proofreader familiar with academic and scientific prose, your specific discipline and the errors commonly encountered when working across languages is not able to make sense of what you are trying to say, it is very difficult for him or her to provide assistance. When PRS proofreaders read documents for clients, they generally strike up a dialogue in marginal comments, and clients are welcome to initiate a dialogue with their proofreaders as well. If you are having trouble with a particular construction or a specific section in your thesis, you should therefore feel free to explain the problem as well as you can in a marginal comment within your Word document or in the instructions you include with the document. This sort of proactive approach will enable your proofreader to direct attention where it is most needed and help you maximise the effect of the money you spend on professional proofreading.

Why PhD Success?

To Graduate Successfully

This article is part of a book called "PhD Success" which focuses on the writing process of a phd thesis, with its aim being to provide sound practices and principles for reporting and formatting in text the methods, results and discussion of even the most innovative and unique research in ways that are clear, correct, professional and persuasive.

The assumption of the book is that the doctoral candidate reading it is both eager to write and more than capable of doing so, but nonetheless requires information and guidance on exactly what he or she should be writing and how best to approach the task. The basic components of a doctoral thesis are outlined and described, as are the elements of complete and accurate scholarly references, and detailed descriptions of writing practices are clarified through the use of numerous examples.

The basic components of a doctoral thesis are outlined and described, as are the elements of complete and accurate scholarly references, and detailed descriptions of writing practices are clarified through the use of numerous examples. PhD Success provides guidance for students familiar with English and the procedures of English universities, but it also acknowledges that many theses in the English language are now written by candidates whose first language is not English, so it carefully explains the scholarly styles, conventions and standards expected of a successful doctoral thesis in the English language.

Individual chapters of this book address reflective and critical writing early in the thesis process; working successfully with thesis supervisors and benefiting from commentary and criticism; drafting and revising effective thesis chapters and developing an academic or scientific argument; writing and formatting a thesis in clear and correct scholarly English; citing, quoting and documenting sources thoroughly and accurately; and preparing for and excelling in thesis meetings and examinations. 

Completing a doctoral thesis successfully requires long and penetrating thought, intellectual rigour and creativity, original research and sound methods (whether established or innovative), precision in recording detail and a wide-ranging thoroughness, as much perseverance and mental toughness as insight and brilliance, and, no matter how many helpful writing guides are consulted, a great deal of hard work over a significant period of time. Writing a thesis can be an enjoyable as well as a challenging experience, however, and even if it is not always so, the personal and professional rewards of achieving such an enormous goal are considerable, as all doctoral candidates no doubt realise, and will last a great deal longer than any problems that may be encountered during the process.

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Rene Tetzner

Rene Tetzner's blog posts dedicated to academic writing. Although the focus is on How To Write a Doctoral Thesis, many other important aspects of research-based writing, editing and publishing are addressed in helpful detail.

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