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情态动词should 的用法,1. should do “表现在可将来”,should have done “ 表过去”,应该,与ought to用法相当,但不如 ought to 语气强。,We should learn about the computer and make full use of it. 我们应该了解计算机并加以充分利用。,You should listen to the doctors advice. 你应当听大夫的话。,I should have finished my work. 我应该做完我的工作。(实际上还没有做完),但当表示“应该”时,should 更侧重自己主观的看法, 而且ought to 更着重客观的情况。,We should ( ought to ) go and see Mary sometime. We ought to ( 不用 shoud) go and see Mary tomorrow, but I dont think we will have time.,mustnt, shouldnt had better not,They shouldnt left so soon.,表禁止,You should do what your parents tell you. I often see lights in that empty house. Do you think I should report it to the police?,should, must have to,表义务 (应该),有时态变化,-Ill tell Mary about her new job tomorrow. -You should have told her last week.,表示与过去事实的相反, 意为 “本应该”,2. 在It is/was right that.类句型的that从句中,以虚拟语气表示“应该如此”或“不合理”、“难以置信”、“不该如此”等意思(事实并非如愿)。例如:,It is/was no wonder that he should have succeeded. (表过去) 难怪他会成功。,It is/was a pity that he should have failed. (表过去) 真可惜他失败了。,It is not right that one should speak ill of others. (表现在及未来) 说别人的坏话是不对的。,It is strange that you should say so . (表现在) 你这样说话真奇怪呀!,这一句型还可用以下这些词来代替right等词。,natural, necessary, strange,important, advisable, better, desirable(合意的), essential,good,proper, well, urgent,wrong,funny,pitiful,a thousand pities, regrettable(令人惋惜的), to be regretted(令人惋惜的), surprising(令人吃惊的),类似句型还有:(以下句中should意为“竟然,居然会”),I am sorry that I should have spoken so rudely. (表过去) 我很抱歉我竟然说话那么粗鲁。,What are you(I am suprised) that you should have so insulted our teacher?(表过去) 你是谁竟然对我们老师如此无礼?,3. 表明显的结果或合理的推论,且所期待的事几乎是事实。不是虚拟语气。例如:,Mary took dancing dessons for years; she should be an excellent dancer. 玛丽学了几年的舞蹈,她该是位很优秀的舞蹈家。,It is three oclock;the football game should begin soon. 已是3点钟了,足球比赛开始了。,4. 在疑问句中表示惊讶、不合理、难以置信或不应说的事。例如:,Why should I go? 我干嘛要去?(不满),Why should he publish such a book? 为何他竟会出版这种书?,Why should you be sorry about the news? 你为何对这消息感到难过?,Should he do such a thing? 他会做这种事吗?,How should I know? 我怎么会知道?,Who should write it but himself? 不是他自己还有谁会写呢?,5. 带should的习惯用语。,a. I should say (我敢说) he is over forty.,b. She is over thirty, I should think(我相信),6. Should 用于虚拟语气,You cant imagine that a well-behaved gentleman should be so rude to a lady.,表示吃惊, 意为 “竟然会”,1. In case I _, I would try again. A. will fail B. would miss C. should fail D. shall miss,2. He asked me if he _ open the window. A. shall B. would C. will D. should,3. Everyone _ do his best to make the world safe and clean. A. can B. may C. should D. had to,didnt/neednt to do 本不需要做而实际上也没做 should have done 本应该做而实际上没做 (责备),1. It was really very dangerous; you _ him seriously. A. might have injured B. could injure C. should have injured D. must injure,Practice,2. “_ you mind my opening the window?” “Not at all.” A. Shall B. Should C. Will D. Would,3. I didnt hear the phone. I _ asleep. A. must be B. must have been C. should have D. could have bee,4. You _ pay more attention to your spelling next time. A. would B. should C. will D. shall,5. The teacher told the students that they _ keep silent in class all the time. A. ought to not B. ought not to C. ought not to have D. cant,6. A computer _ think for itself; it _ be told what to do. A. may not, must B. mustnt, might C. shouldnt, could D. cant, must been 7. You _ me about it earlier, but you didnt. A. should have told B. would have told C. must have told D. should tell,8. - Shall I tell John about it? - No, you _. Ive told him already. A. neednt B. wouldnt C. mustnt D. shouldnt,高 考 链 接,1. Where is my dictionary? I remember I put it here yesterday. You _ it in the wrong place. (江西2007) A. must put B. should have put C. might put D. might have put,A,2. She _ have left school,
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