Question tags are short addition to sentences, asking for agreement or confirmation. It will be of no sense without a preceding statement. Structure: Statement (S+ V+ O), aux + (n't) + pronoun? Or Statement (S+ V+ O), aux.+ pronoun + not? Example: a. I am a graduate student, aren't I/am I not? b. Karen plays the piano, does he not? doesn't he? An affirmative statement has a negative tag and a negative statement has a positive tag. However, the statement introduced by so has the same polarity tag (positive tag for positive statement & Neg. Tag for Neg. Statement) Example: So you're not going out today, aren't you? ⮚ The verb of the statement changes in the following ways: Statement Tags is isn't ......... ? is not is..........? am aren't I/am I not am not am I? was wasn't ..........? can can't..........? well/shall won't/shan't..........? have/has/had ...