The document provides guidance on writing effective analytical topic sentences when analyzing a text. It advises to avoid merely descriptive topic sentences and instead make a claim about the text being analyzed. A good analytical topic sentence should: 1) Make an interpretive claim about some aspect of the text; 2) Signal where the paragraph is going to take the argument; and 3) Echo and support the overall thesis statement. Sample topic sentences are provided and analyzed to demonstrate how they incorporate these elements of an effective analytical topic sentence.