What are Tag Questions?
A tag question is a short question added to the end of a statement. We use them to check information or invite agreement. The rule is simple: if the statement is positive, the tag is negative. If the statement is negative, the tag is positive.
Positive statement + negative tag?
Negative statement + positive tag?
Tag Questions with To Be
Use the same form of to be in the tag.
You are a teacher, aren't you?
She is at home, isn't she?
They aren't ready, are they?
It isn't cold today, is it?
Tag Questions with Do / Does
Use do or does in the tag. Never repeat the main verb.
You like coffee, don't you?
She works here, doesn't she?
They don't eat meat, do they?
He doesn't drive, does he?
Tag Questions with Modals
Use the same modal verb in the tag.
She can swim, can't she?
You will come, won't you?
He can't drive, can he?
They won't be late, will they?
⚠ Common mistakes:
✗ She is a doctor, isn't it? → ✓ She is a doctor, isn't she? (tag pronoun must match subject)
✗ You like pizza, don't he? → ✓ You like pizza, don't you?
✗ He can swim, can't they? → ✓ He can swim, can't he?
✗ She works here, doesn't it? → ✓ She works here, doesn't she?