Question tags are short questions that follow a sentence, especially in spoken English, and are used to ask if something is true, to ask people to agree, or continue a conversation. There are three rules for question tags: use a negative tag after a positive sentence and vice versa, use the same auxiliary verb as the main sentence, and if there is no auxiliary verb use "do", "does", or "did". Examples are provided to illustrate the rules. An exercise with 20 examples of question tags is included for practice.