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动词不定式的时态,1.I opened the door to enter the room.,3.Mr.Smith is going to attend the meeting to be held tomorrow.,.一般式(to do).,不定式的一般式所表示的动作（状态）同时（或几乎同时）发生，或之后发生。,2.saw her enter the room.,.进行式(to be doing),1.I am very glad to be working with you.,2.He pretended to be reading when his mother came into his room.,不定式的进行式表示正在进行的动作,和谓语动词所表示的动作同时进行。,动词不定式的时态,动词不定式的时态,.完成式（to have done),1.I am sorry to have kept you waiting so long.,2.You seemed to have read the novel written by Mr.Smith.,不定式的完成式表示的动作在谓语表示的动作之前发生。,
