present perfect negative positive e interrogative
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Present perfect affirmative form:
Subject+ have/has + verb( past participle) +complement
Ex: she has done her homework.
Present perfect negative form:
Subject + haven't /hasn't + verb (past participle) +complement
Ex: she hasn't done her homework
Present perfect interrogative form:
Have/has+ subject + verb ( past participle)+ complement +?
Ex:has she done her homework?
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