do
/du/ auxiliary verb (present tense does /dʌz/, /dəz/, past tense did /dɪd/, past participle done /dʌn/) (FOR QUESTIONS/NEGATIVES)Definition
› used with another verb to form questions and negative sentences: Where do you work? Why don’t we have lunch together on Friday? "Didn’t you know Sophie was coming?" "Of course I did." Don’t talk about that. Note: The negative contractions are doesn’t, didn’t, and don’t.
(Definition of do auxiliary verb (FOR QUESTIONS/NEGATIVES) from the Cambridge Academic Content Dictionary
© Cambridge University Press)
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