Notes on Essay Structure and Topic Sentences
Overview of the lecture
Focus: essay structure and topic sentences
Key sections covered: introduction, body paragraphs, optional counterarguments, conclusion
Topic sentences definition and their types
Essay structure: the standard framework
Introduction
Must include a hook to grab attention (examples discussed):
Startling statistic
Provocative question
Quote from an outside source
Engaging story or anecdote
The hook may be used creatively (example given: begin with a story and end with a cliffhanger in the introduction, resolving it in the conclusion)
Include the statement of the problem (significance of the topic for the audience)
End with an arguable thesis statement (one sentence that presents your position)
Note: the thesis statement is a distinct topic that will be covered in a later lecture
Body paragraphs
Each paragraph should present one main point (one main point per paragraph)
Each paragraph must include scholarly evidence (peer-reviewed sources, current rather than outdated sources, especially in sciences like psychology/biology)
Body paragraphs must utilize topic sentences
Topic sentences: 1–2 sentences that explain what the paragraph will discuss and how it relates to the thesis
Topic sentences serve as transitions between paragraphs and provide the logical flow
Counterarguments (optional but recommended)
Represent an opposing view (the opponent of your thesis)
Gaining credibility by acknowledging other viewpoints
Concede where appropriate (recognize valid objections) and then refute using scholarly support
Conclusion
Consider tying back to the hook
Reiterate the significance of the topic for the audience
End with a call to action (e.g., persuade readers to think a certain way or take a specific action)
Topic sentences: definition and purpose
Definition: every body paragraph should include a topic sentence that identifies the main idea of that paragraph
Relationship to thesis: topic sentences should show how the paragraph supports or relates back to the thesis
Placement: typically the first sentence (or at the start) of each body paragraph
Function: provide explicit indication of what the paragraph will discuss and how it ties to the thesis; act as the glue that organizes the essay
General guidance: topic sentences help readers follow the structure and maintain focus on the central argument
Practice emphasis: topic sentences should feel natural but often require revision during editing
Transitions and transitional phrases for topic sentences
Purpose: to introduce the topic sentence and signal the paragraph’s role relative to the thesis
Categories and examples from the lecture:
Postpone (to set up background or definitions before stressing the thesis)
Signals the need to define or establish a foundation first
Example topic sentence:
"Before discussing the concept of artificial intelligence or AI, it is necessary to define the types and parameters of AI."
Expand (to add detail or list related elements)
Signals continuation and elaboration of an idea
Examples: "For example, furthermore, indeed, in fact, also" as transitions
Example topic sentence: "AI is not exclusive to automation; for example, AI is also found in computer coding, algorithms, etc."
Review and Predict (to summarize the prior paragraph and preview the next)
Signals coherence across paragraphs and foreshadows upcoming content
Example words: since, consequently, as a result, while
Example topic sentence: "While this has been proven in this area, as was discussed, it can also be seen in this area."
Compare and Contrast (to highlight differences or conflicts)
Signals evaluation of alternatives or tensions
Example words: "In contrast, however, yet on the other hand"
Example topic sentence: "However, the same cannot be true for ____ (fill in the blank)"
Practical illustration: student example on fan fiction (topic sentences in action)
Thesis (from the student’s paper):
"Fan fiction is a valid form of creative writing, which should not be disregarded as inferior work because it, 1) improves the writing skills of unpublished authors, and 2) does not infringe on copyright laws."
Topic sentence 1 (Postpone): define fan fiction first
"Before focusing on fan fiction writing skills, it is essential to define fan fiction and its examples."
Function: sets up the foundation (definition and examples) for the first supporting reason (writing skills)
Topic sentence 2 (Review and Predict): move from definition to the next aspect
"Now that fan fiction has been thoroughly defined, we can examine its platform as creative writing and place to improve one's writing."
Function: transitions to the first supporting reason (writing skills)
Topic sentence 3 (Review and Predict): introduce the second supporting reason
"In addition to fan fiction writing skills, the most debated issue concerning fan fiction by far is its legality and the subject of copyright violations with free use."
Function: transitions to the second supporting reason (copyright legality)
Observations: the student’s topic sentences demonstrate clear organization and direct relation to the thesis; they use postponing and review/predict transitions to structure the argument
Takeaway: well-crafted topic sentences can effectively map the progression from definition to support to broader issues, all while tying back to the thesis
Additional takeaways and guidance from the lecture
Topic sentences should come naturally but not be forced during the initial rough draft; focus first on getting ideas down
In revision, add or refine topic sentences to enhance coherence and organization
Topic sentences are especially important in essays and research papers; instructors will look for clear signaling of what each paragraph will cover and how it connects to the thesis
When choosing transitions, select words/phrases that reflect the paragraph’s purpose (introducing a definition, expanding on details, reviewing prior content, or contrasting ideas)
The closing guidance from the instructor
If you have questions, ask for clarification
Use a rough draft to capture ideas, then revise to insert strong topic sentences and transitions
The goal is a well-organized essay where each paragraph clearly supports the thesis and flows logically to the next
Quick summary of the core concepts
Essay structure: Introduction (hook, significance, thesis), Body paragraphs (one main point each; evidence; topic sentences), Counterarguments (optional but beneficial), Conclusion (hook-reflection tie-in, significance, call to action)
Topic sentences: define and connect; usually the first sentence of each body paragraph; use transitional phrases to signal purpose
Transitions: categories include postpone, expand, review/predict, and compare/contrast; examples provided illustrate how to connect ideas and guide the reader
Real-world relevance: up-to-date scholarly sources are essential in scientific fields; presenting well-defined topic sentences helps ensure clarity and credibility
Encouragement for practice
Practice crafting topic sentences and transitions using the categories above
Use student-model examples to see how topic sentences set expectations for each paragraph
Expect revision as a normal part of the writing process; strong topic sentences often emerge during editing