Writing | Main Idea, Thesis Statement, and Topic Sentences - Lesson


Remember: A thesis statement consists of at least one complete sentence; you cannot use a phrase or sentence fragment. Usually, the first sentence indicates the general thesis assertion, and additional sentences indicate the major support for this assertion. (An assertion is any statement that can be either true or false.) As readers, we may not know whether it is true or false or even have any way of determining whether it is true or false, but the logical response to an assertion is either, “Yes, I believe that to be true” or “No, I do not believe that to be true.” Some sentences do not make assertions. Commands, exclamations, intentions, obvious facts, and questions are considered sentences, but they do not make direct assertions and cannot be used as thesis statements.


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.

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 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.

1) What expresses the main idea in an essay

Many times you will be asked to respond in writing to a single text. Before you begin writing, you must be clear about the author’s intentions and what her/his own thesis is. A good way to do this is to make annotations while you are reading and after you are finished reading to briefly summarize the author’s main points. Also, make sure to separate your own ideas and opinions from those of your source. It would also be beneficial to decide whether you agree or disagree with what the author is saying. Then, you can begin the stages—as listed in this handout—of developing your thesis.

After you have prewritten about your working thesis statement, you may have generated a lot of information, which may be edited out later. Remember that your primary support must be relevant to your thesis. Remind yourself of your main argument, and delete any ideas that do not directly relate to it. Omitting unrelated ideas ensures that you will use only the most convincing information in your body paragraphs. Choose at least three of the most compelling points. These will serve as the topic sentences for your body paragraphs.

In a comparative essay, you will be required to formulate a thesis that encompasses two or more features that you will be comparing and analyzing. Therefore, you will be writing a thesis that looks at multiple perspectives, not necessarily leaning one way or the other, but bringing out a central comparative idea between or among the things, issues, authors, etc., that you choose as the focus of your essay. The following paragraph represents the introduction to an essay comparing the female protagonists from two works of fiction: Kate Chopin’s and Charlotte Perkins Gillman’s . The closed or final thesis is highlighted in bold.

Personal observation: Personal observation is similar to testimony, but personal observation consists of your testimony. It reflects what you know to be true because you have experiences and have formed either opinions or judgments about them. For instance, if you are one of five children and your thesis states that being part of a large family is beneficial to a child’s social development, you could use your own experience to support your thesis.


A thesis statement summarizes the main idea of a paper or an essay ..

If you make an assertion and include the reason or reasons which support your assertion, and it is broad enough in scope, yet specific enough to be unified and to serve as a substantial generalization of your essay, you have written a closed or final thesis statement. The evidence can take many forms: facts, opinions, anecdotes, statistics, analogies, etc., but the essential relationship between the thesis and the major points of support is one of conclusion to reason:

The topic sentence is the main idea of the paragraph

In Kate Chopin’s book and Charlotte Perkins Gillman’s novella , the female protagonists veer from the collective mainstream of a patriarchal society because of their pronounced feelings of alienation, frustration, and emotional and creative repression within this social structure, marked by the subordination of women. Ultimately, both characters escape the narrow restraints of this early 20th century mentality either by suicide—as in —or through insanity—as in . However tragic this may appear on the surface, the implication of deliverance from their restricted environments is one of liberation and transgression from and of the dominant culture. In this way, the women’s actions are equally heroic.

clearly states the main idea or argument of your essay

Most of the guidelines of this handout specifically relate to writing a thesis for a multiple source essay. Remember, it is best to keep your thesis open while you are doing your research, and it is necessary to have a few possible narrow topics in mind before beginning intensive reading. Also, the questions that you formulate in the first stage of the thesis are important, as they will guide you in your research.

Essay Writing Flashcards | Quizlet

Each of the underlined words is a transition word. Words such as first and second are transition words that show sequence or clarify order. They help organize the writer’s ideas by showing that he or she has another point to make in support of the topic sentence. Other transition words that show order include third, also, and furthermore.