Question Tag/Tag Question
A question tag is a clause usually containing an inverted subject and an auxiliary or modal verb, and inserted at the end of a statement. It turns the statement into a question or a request for confirmation, depending on its intonation, with a rising tone indicating a question and a falling tone signalling a request for confirmation. A question formed by adding a question tag to the end of a statement is called a tag question.
Here are some tag questions that use different question tags:
He left last night, didn’t he?
She can’t swim, can she?
Nobody understands, do they?
You’ll bring it tomorrow, won’t you?
Parrott, M. (2010). Grammar for English Language Teachers, 2nd edition. Cambridge: Cambridge University Press.
Thornbury, S. (2006). An A-Z of ELT. Oxford: Macmillan.
Underhill, A. (2005) Sound Foundations. Oxford: MacMillan.