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    3．ought to ought to无人称和时态变化.只有ought to一种形式.后面跟动词原形.表示“有义务或责任 做某事.语气比should强.表示客观上应该做某事.也可表示“劝告 .否定式为ought not to 如: You ought to obey your parents. 你应该听父母的话. I knew that I ought not to tell him about it, so I didn’t.我知道我不该告诉他这件事.所以我没有告诉他. Note:“should+不定式一般式 用来谈论现在和将来“应该- .若谈论过去“应该- 要用should+不定式的完成式.即should/ought to have done.其否定式表示“过去不应做但做了 . 例如: I should/ought to have done such a thing. 我本应该做这件事的. You should not/ought not to have gone back to work without the doctor’s permission. 你不应该未经医生许可就去工作. [考点透视 考例精析] [考点] 考查情态动词的用法区别. [考例1] According to the local regulations, anyone who intends to get a driver’s licence take an eye test. (NMET2005年春季上海.29) A．can B．must C．would D．may [解析] B must根据句意.此处意思是“必须 .要获得驾驶执照必须进行视力测试.can为“能够 ,would为“愿意 ,may为“可以 . [考点] 考查情态动词的意义区别. [考例2] I often see lights in that empty house. Do you think I report it to the police? (NMET2004年全国卷I, 21) A．should B．may C．will D．can [解析] A should表示“应该 .因为经常看见那座空房子里有灯光.所以征求对方的意见是否应该向警察报告. [考点] 考查“should + have + done 的用法. [考例3] Mr. White at 8:30 for the meeting, but he didn’t turn up. A．should have arrived B．should arrive C．should have had arrived D．should be arriving [解析] A 此句所使用的是“should + have + 过去分词 结构表示本来应该做却没有做的事情.所提供的场景是but he didn’t turn up.说明他本来应该8:30来开会.但没有来.再如: You should have done your homework by yourself. 你本来该独立完成作业. [基础演练] 一.根据所给首字母或括号中的汉语意思填写句子空格中所缺的单词. 【查看更多】

     

    题目列表(包括答案和解析)

    We have done things we ought not to have done and ________ undone things we ought to have done.

    　　A. left　　　　　　　　　　　　　B. leave

    　　C. will leave　　　　　　　　　　 D. leaving

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    We have done things we ought not to have done and ________ undone things we ought to have done.

    　　A. left　　　　　　　　　　　　　B. leave

    　　C. will leave　　　　　　　　　　 D. leaving

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    The train has gone. You two _________on time.

    A. should come　　　　　　　　　　　 B. must have come

    C. ought to have come　　　　　 D. shouldn’t have come

     

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    He ______. It's a shame my mobile phone was power-off. 【江苏省苏州市吴中区东山中学2010-2011学年度高三第二学期模拟卷】【情态动词】

    A. ought to call me 　　　　　 B. could have called me

    C. may be calling me　 　　　　 D. might call me

     

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    You ________ last week if you were really serious about your work.

    　 A. ought to come　　 B. ought to be coming　

    C. ought to have come　 D. ought have come

     

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