do1
verb ( does /dəz/; doing; past did /did/; past participle done /dən/)
verb
noun ( plural dos or do's)
Phrases
Phrasal Verbs
Origin:
Old English dōn, of Germanic origin; related to Dutch doen and German tun, from an Indo-European root shared by Greek tithēmi 'I place' and Latin facere 'make, do'
Grammar
An auxiliary verb. Like be and have, do can be used both as an auxiliary and as a main verb. It is a common and useful main verb in sentences such as:Overcoats will do more than keep you warm this winter. Toyota has done a lot of work in this area, starting back with the Prius. Another assassin is waiting to do him in. As an auxiliary verb it is used: to make negative statements:Water lilies do not grow well if water is falling onto their leaves. to form questions:“Do you understand me?” he asked a second time. to form tag questions:Well, it doesn’t matter about anyone else, does it? They didn’t act like police, did they? for emphasis:And he does like to travel. to avoid repetition:I think you all know him better than I do.