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.

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

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