English Grammar Index
TO DO :
From TO DO to HOME PAGE
TO DO may be used as an Auxiliary verb to help to form the Negative and Interrogative forms of most principal verbs in the Present and Past Simple Tenses.
The sofa does not look clean.
He did not arrive in time.
Do you understand this thoroughly?
Why did he come late?
TO DO may be used in answer to a question beginning with DO.
Do you like fruit? Yes, I do.
Did you come here yesterday? No, I did not.
TO DO may be used as a principal Verb meaning TO PERFORM.
The leader did his best.
They did the work satisfactorily.
Johns does all the housework.
Lenin didn’t do much of the work.
Does Helen do anything except arranging the flowers?