grammar
have done
had done
have been doing
have been done

please tell me how to use them in different sentence.thank you！

Question

grammar
have done 
had done
have been doing
have been done

please tell me how to use them in different sentence.thank you！

Answer

have done  - Present perfect, past action which has relevance or influence on the Present
had done- past perfect, used to denote a past action before another past action
have been doing- present perfect progressive ( or continuous) the same as the first one only the action is a long, continued one
have been done- present perfect passive a present perfect action which is passive eg. This exercise has already been done.

Answer

have done - I have done my work - present perfect
had done - you had done your work - past perfect
have been doing - i have been doing this work since morning - present perfect continue
have been done - mails have been done / sent - passive voice

Answer

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