This document discusses question tags and their use and formation. Question tags are short questions added to the end of statements to check if the information is correct. They follow certain rules depending on whether the statement is positive or negative. The question tag will have the opposite polarity. They consist of an auxiliary verb and a pronoun referring to the subject. Certain verbs like 'be' form question tags differently. Question tags often elicit short yes/no answers and intonation is used to indicate the speaker's certainty of the answer.