I my homework yesterday, but unfortunately I forgot about it totally.A．ne
题型：不详难度：来源：
I my homework yesterday, but unfortunately I forgot about it totally.| A．need have handed in | B．should have handed in | | C．must have handed in | D．may have handed in |
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答案
| B |
解析
试题分析：考查虚拟语气。But后面的句子使用陈述语气，前面的句子使用虚拟语气。本题But后面的句子使用了过去时，故前面的句子是与过去事实相反的虚拟语气。need have done需要做某事，实际上却没有做；should have done本应该做某事，实际上却未做；must have done一定做了某事（表示推测）；may have done也许做了某事（表示推测）；句意：我本应该昨天交作业，但是不幸的是我完全忘记了。
点评：“情态动词+have done”可以表示对过去的虚拟或者推测。need have done需要做某事，实际上却没有做；should have done本应该做某事，实际上却未做；must have done一定做了某事（表示推测）；may have done也许做了某事（表示推测）； |
举一反三
Lily didn’t come to the party last Sunday. ____，she would have made the party more exciting . | A．If she came | B．Would she come | C．Had she come | D．Did she come |
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---- Pity you missed the lecture on nuclear pollution.
---- I _________ it, but was busy preparing for a job interview.| A．would have attended | B．had attended | C．would attend | D．attended |
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Now then, children, It’s time you ________.| A．were washed and dressed | B．washed and dressed | | C．are washed and dressed | D．washed and dress |
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John didn’t feel well yesterday; otherwise he ______ to see his friend off at the airport.| A．came | B．would come | C．would have come | D．should be coming |
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Had it not been for your help, I _____ penniless today.
| A．wound have been | B．must be | C．wound be | D．may be |
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