Meaning of “do” - Learner’s Dictionary


auxiliary verb uk us strong /duː/ weak //

A1 used with another verb to form questions and negative phrases:

Do you need any help?
When does the next bus leave?
I don't know.

A2 used in a phrase at the end of a sentence to make it into a question:

Sarah lives near here, doesn't she?
That doesn't make any sense, does it?

B1 used to avoid repeating a verb that has just been used:

"I hate that song." "So do I."
My sister reads a lot more than I do.

B2 used to emphasize the main verb:

He does like you, he's just shy.
Do come and visit us soon.

(Definition of “do auxiliary verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)

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