Tag questions are frequently used in spoken English. A tag question is a short question added to the end of a positive or negative statement. Tag questions are usually used for checking information that we think is true, for example: “The bus is coming, isn’t it?” The statement and the tag are always separated by a comma.
Positive statement – question tag negative: You are Ed, aren’t you?
Negative statement – question tag positive: He isn’t Ron, is he?
The verb in the statement should be the same tense as the verb in the tag.
Examples
You are a good singer, aren’t you? (present tense)
You didn’t go to work yesterday, did you? (past tense)
Examples with auxiliary verbs
Those new shoes weren’t very comfortable, were they?
The children haven’t had anything to eat, have they?
He will come back, won’t he?
He won’t come back, will he?
Examples without auxiliary verbs (instead: use do/does/did)
This game looks rather interesting, doesn’t it?
Those new phones look very expensive, don’t they?
You went to school in New York, didn’t you?
Use will/would with imperatives
Open the window, will/would you?
Use won’t with a polite request
Open the window, won’t you?
Use shall after Let’s
Let’s take the next bus, shall we?