Verb Tenses

Verb Tenses
Any verb has 3 forms:-
Present- used in present tense
Past- used in past tense
Past Participle- used in perfect tense
Examples:-
Present     Past            Past Participle
Do              Did              Done
Work        Worked      Worked
Read          Read           Read
Speak        Spoke         Spoken

Example:-
Did you do that? -------->Its a question in past tense. So the question begins with the past form of the verb 'do' that is 'did'. 'do' is the main verb in the above question. And 'did' is the helping verb or the auxiliary verb.
Do = perform an action