Level B1
Tag Questions
A tag question is a short question at the end: it repeats the helping verb with the opposite sign. She is happy, isn't she? You don't like tea, do you? No helping verb: do, does or did (He likes coffee, doesn't he?).
She is happy, isn't she?
Look: She is happy, isn't she? We check that we are right.
Forms
She is happy, isn't she?— a positive sentence, a negative tagYou don't like tea, do you?— a negative sentence, a positive tagHe likes coffee, doesn't he?— no helping verb: does
A common mistake
Wrong: He likes coffee, isn't he?
Right: He likes coffee, doesn't he?
A common mistake is isn't after a verb like likes. We say: He likes coffee, doesn't he?
More examples
They went home, didn't they?
In the past, it is did: They went home, didn't they?
You can swim, can't you?
With can, the tag repeats can: You can swim, can't you?