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Table 1 Definitions and examples of Toulmin’s claim, thesis statement and topic sentence

From: An empirical study of claims and qualifiers in ESL students’ argumentative writing based on Toulmin model

 

Definition with illustrative examples

Toulmin’s claim

Definition: Claim refers to the conclusion to be argued for

Example: In my opinion, it will be fine for us to keep Marine parks open. (N26)

Thesis statement

Definition: The thesis statement is a sentence (or, less frequently, a string of sentences), generally appearing at the end of the introductory

Example: The violence and cruelty towards animals in marine parks has been a heated topic recently. From my standpoint, marine parks should be permitted to exist only on condition that they ensure animals an environment of comfort. (N88)

Topic sentence

Definition: A topic sentence defines what a paragraph is about

Example: To start with, it is no doubt that marine parks bring us happiness and amazing experience. (N31)