Introductory paragraph. Definition. Welcome to Writefix. Is the writers first chance to make an impression on the. Attention Catchers. Arn about IELTS essay. Topic sentence is a sentence, sometimes at the beginning of a paragraph, that states or suggests the main idea (or topic) of a paragraph. Is is where the writer grabs the. E introductory paragraph should also include the thesis statement, a kind of mini outline for the essay. E attention catcher or lead should be the first sentence in the persuasive essay? The site is aimed at people who are learning English and taking the IELTS or TOEFL exams in writing or speaking.