2 Poe wanted the reader to see and feel real life. In many cases, the type of essay you're writing will be determined by an assignment. Make sure that both your conclusion and introduction match the changes that you make to the body. The thesis statement (sentence 3) presents topic of the paper to the reader and provides a mini- outline. 5 - 7 sentences is an appropriate length for paragraphs in the body. Try to use no more than 3 to 5 sentences for short essays, and no more than 1 page for longer essays. If you're relaying a cause and effect relationship: I will be the first person in my family to graduate from college.