练习册

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    can, could, may, might, must 皆可表示推测.其用法如下: 1)情态动词+动词原形. 表示对现在或将来的情况的推测.此时动词通常为系动词.I don't know where she is, she may be in Wuhan. 2)情态动词+动词现在进行时. 表示对现在或将来正在进行的情况进行推测. At this moment, our teacher must be correcting our exam papers. 这时.我们老师想必在批改试卷 3)情态动词+动词完成时. 表示对过去情况的推测. We would have finished this work by the end of next December.明年十二月底前我们很可能已完成这项工作了.The road is wet. It must have rained last night.地是湿的.昨天晚上一定下雨了. 4)情态动词+动词的现在完成进行时. 表示对过去正在发生事情的推测. Your mother must have been looking for you.你妈妈一定一直在找你. 5)推测的否定形式.疑问形式用can't, couldn't表示. Mike can't have found his car, for he came to work by bus this morning. 迈克一定还没有找回他的车.因为早上他是坐公共汽车来上班的. 注意:could, might表示推测时不表示时态.其推测的程度不如can, may. 【查看更多】

     

    题目列表(包括答案和解析)

    ---Who can it be that hasn’t handed in his composition?

    ---It ______ be Robinson. He ______ it in yesterday.

    A．will; should hand

    B．must; should have handed

    C．may; can’t hand

    D．can; could have handed

     

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    ---Who can it be that hasn’t handed in his composition?

    ---It ______ be Robinson. He ______ it in yesterday.

    A．will; should hand

    B．must; should have handed

    C．may; can’t hand

    D．can; could have handed

     

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    — _______ I ask you something, if you are not busy?

    —Yes, of course you _______.

    A. Should; should               B. Could; can

    C. Could; could          D. Can; Could

     

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    —Who ________ it be that hasn't handed in his composition?

    —It ________ be Robinson.He ________ it in yesterday.

    A．can; will; should hand

    B．can; must; should have handed

    C．may; may; can't have handed

    D．will; can; could have handed

     

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    —Who ________ it be that hasn't handed in his composition?

    —It ________ be Robinson.He ________ it in yesterday.

    A. can; will; should hand

    B. can; must; should have handed

    C. may; may; can't have handed

    D. will; can; could have handed

     

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