the introduction to most of the essays you write in school with the main purpose is simply to introduce the thesis the introduction of a critique or evaluation essay is more complex first you must introduce the author and the title of the work being critiqued this information is often in the first sentence of a critiques introduction but so long as the info is at or near the top your fine second state the author's main point whether it's the main point of the entire work or the main point of the section you are critiquing the main point is sometimes