This document discusses tag questions, which are structures added to the end of a statement to turn it into a question. A tag question is formed using two words - a verb and a pronoun. There are five rules for constructing tag questions: 1) the verb in the tag matches the tense and number of the verb in the statement; 2) an affirmative statement has a negative tag and vice versa; 3) the pronoun in the tag agrees with the subject of the statement; and 4) the verb in the tag agrees with the tense of the verb in the statement. Examples are provided to illustrate the rules. The document also provides tips for tag questions and examples to identify whether tag questions are used correctly.