2019-2020学年北师大版英语必修5课件：Unit 15 Period Seven

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1、,PART 1,语法感知,PART 2,语法精析,PART 3,高考链接,Period Seven GrammarThird conditional & Wish and Should have,语法导学,感悟规律 重点难点剖析,PART1,语法感知,感知以下课文原句，完成方框下的小题,1.In the past，if someone like me had failed to get into university through the college exam，he would have had no chance of getting a degree. 2.In the past，i

2、f someone had worked for a company for over 20 years，they would have stayed there until retirement! 3.In the past，if Id wanted to see them，I would have had to visit them in person. 4.Sometimes I wish I could phone him and ask for his opinion! 5.He was very bright and should have done much better in

3、all his other subjects.,6.The government should have put more money towards science education. 7.And I wish they would decrease the size of classes. 8.My wife often wishes that I had chosen a job with less stress but I love what I do.,1.1、2、3句表示与 相反的虚拟语气，其条件从句用 ，主句谓语用 。 2.在wish后面的宾语从句中，表示与 相反的愿望的是4句

4、和7句，表示与 相反的是8句。 3.5句和6句中用should have done结构表示“ ”。,had done,would have done,过去事实,现在事实,过去事实,过去本该做某事而实际未做,查看答案,PART2,语法精析,虚拟语气常表示某种情况与事实不相符或表示说话人的愿望、请求、意图、建议、惊奇或设想等。它常用于非真实条件句中，根据其表达的时间不同主从句的虚拟结构也有所不同。 一、虚拟语气在非真实条件句中的使用,If he were here，I would explain to him myself. 要是他在这里我就亲自向他解释了。 If you had taken yo

5、ur teachers advice，you would not have failed the exam. 如果你听从了你的老师的建议，你就不会考试不及格了。 If it were to rain/should rain/rained tomorrow，we would stay at home. 如果明天下雨，我们就待在家里。,二、混合条件句 在虚拟条件句中，有时主句和从句所表示的时间并不一致，此时应分别针对不同的时间使用不同的动词形式。 If he had joined the army thirty years ago，he would be a general now. 如果30年前

6、他参了军，他现在就是将军了。(从句表示与过去事实相反的假设，主句则表示与现在事实相反的假设。),三、含蓄条件句 1.非真实条件句中的条件从句有时不表示出来，只暗含在上下文中，如用but for，without，with，otherwise，or等词语。 Given more time，he could have done it better. 再多给点时间他可能会做得更好。 Without your help，we couldnt have finished our work on time. 没有你的帮助，我们不可能按时完成我们的工作。 2.有些句子没有任何表示条件的单词、短语或句子，但意义

7、隐含在上下文中，所以它们也需要用虚拟语气。 He told me about your coming，or I would have known nothing about it. 他告诉我你来了，否则我就一无所知了。,四、虚拟条件句的省略和倒装 当虚拟条件从句中含有were，had，should时，可以省去if，而将它们移到从句句首构成倒装结构。 If I were in your place，I wouldnt do that. Were I in your place，I wouldnt do that. 如果我处在你的位置，我不会做那件事。 If you had turned to m

8、e，I would have helped you. Had you turned to me，I would have helped you. 如果你请我帮忙，我就帮你了。 If it should rain，we would put off the match. Should it rain，we would put off the match. 如果天下雨，我们就推迟比赛。,五、虚拟语气在名词性从句中的使用 在名词性从句中也会出现虚拟语气结构。 1.在宾语从句中 (1)表示要求、建议或命令的动词，如suggest，order，request，advise，insist，demand，co

9、mmand等，后跟宾语从句时，宾语从句的谓语常用“(should) do”结构。 Dad suggested that I (should) have a talk with her.爸爸建议我和她谈谈。 The workers insisted that their wages (should) be increased. 工人们坚决要求涨工资。,注意：suggest表示“表明”，insist表示“坚决认为”时后面的从句应用真实语气。 Her pale face suggested that she was ill and I suggested that she should go to

10、see the doctor. 她苍白的脸色表明她生病了，我建议她应该去看医生。 (2)在would rather后的宾语从句中，常用一般过去时表示与现在或将来相反的情况；用过去完成时表示与过去相反的情况。 I would rather you hadnt let out the secret. 我真希望你没把这个秘密泄露出去。,(3)wish后的宾语从句用一般过去时表示与现在事实相反的情况；用过去完成时表示与过去事实相反的情况；用“would/could动词原形”表示与将来事实相反的情况。 How I wish I could live another five hundred years!

11、 我多么希望我还能再活五百年！ How I wish I had followed her instructions then! 我多么希望我那时听从了她的指示！,2.在表语从句和同位语从句中 表示要求、建议或命令的名词如suggestion，proposal，order，advice，demand等，其后的表语从句和同位语从句中常用“(should) do”结构。 My suggestion is that we (should) learn another foreign language. 我的建议是我们应该学习另外一门外语。 His proposal that they (should

12、) take immediate measures sounds reasonable. 他建议他们立刻采取措施，这一建议听起来很合理。,3.在主语从句中 当主语从句表示惊奇、惋惜、怀疑等时应用虚拟语气，谓语用“(should) do”结构。常用句型为“Its strange/necessary/important/a pity/suggested/vital/ desired/proposed/essential/natural/.that.”。 Its a pity that he (should) refuse to accept the offer. 他拒绝接受这项提议真是遗憾。 It

13、 is strange that he (should) be so rude. 真奇怪，他竟然这么粗鲁。,六、虚拟语气在其他固定句式中的使用 1.Its (high/about) time that.后面的从句用过去时或其谓语用“should do”结构(此时should不可省略)。 Its high time that you rang him up. Its high time that you should ring him up. 你该给他打电话了。 2.在if only引导的感叹句中，其虚拟语气的用法与wish后的用法相同。 If only I had come two days

14、earlier! 我要是早来两天就好了！ If only he were here！要是他在这里就好了！,3.在as if/as though引导的表语从句和方式状语从句中，用一般过去时表示和现在事实相反或对现在情况有所怀疑；用过去完成时表示对过去情况的虚拟。 He talks as if he were an expert. 他说起话来似乎是一个专家。 The injured man acted as if nothing had happened. 那个受伤的男子表现得仿佛什么事也没发生过一样。 注意：as if/as though引导的从句如果与事实相符，则应用真实语气。 He look

15、s as if he is going to be ill. 他看起来似乎要生病了。,PART3,高考链接,.用所给词的正确形式填空 1.If we (catch) the flight yesterday，we would be enjoying our holiday on the beach now.(2018天津) 2.They might have found a better hotel if they (drive) a few more kilometers.(2018北京) 3.There is a good social life in the village，and I

16、wish I (have) a second chance to become more involved.(2018江苏) 4.If the new safety system (put) to use，the accident would never have happened.(2017北京),查看答案,had caught,had driven,had,had been put,5.Do you have Bettys phone number? Yes.Otherwise，I (not，be) able to reach her yesterday. (2017天津) 6. (be)

17、 it not for the support of the teachers，the student could not overcome her difficulty.(2017江苏) 7.If it (not，be) for his invitation the other day，I should not be here now.(2016江苏) 8.I was wearing a seatbelt.If I hadnt been wearing one，I _ _(injure).(2016天津),查看答案,wouldnt have been,Were,had not been,wo

18、uld have been,injured,9.Without his wartime experiences，Hemingway (not，write) his famous novel A Farewell to Arms.(2015重庆) 10.I wish I (be) at my sisters wedding last Tuesday，but I was on a business trip in New York then.(2015天津) 11.It is lucky we booked a room，or we (have) nowhere to stay now. (2015安徽),查看答案,wouldnt have written,had been,would have,.单句改错(每小题仅有1处错误) 1.Some classmates suggest we can go to places of interest nearby. (2016全国，短文改错) 或Some classmates suggest we can go to places of interest nearby. 2.If you are me，would you talk to them？(2015四川，短文改错),查看答案,should,were,