This document discusses question tags in English grammar. It explains that question tags are short questions added to the end of sentences to confirm something is true or not. Negative question tags are used with affirmative sentences, and affirmative question tags are used with negative sentences. The document provides examples of question tags formed with different verbs like "be", modal verbs, and the auxiliary "do". It also includes an exercise for readers to write question tags for sample sentences. The goal is to teach English learners how to properly form and use question tags.