2019_20学年高中英语Unit3UnderstandingeachotherPeriodFiveGrammar—Unrealconditionals课件.pptx

,Understanding each other,Unit 3,PART 1,语法导学,PART 2,达标检测,Period Five GrammarUnreal conditionals,PART 1,语法导学,感悟规律 重点难点剖析,感知以下句子，完成方框下的小题,1.句1，2表示与_事实相反的假设。 2.句3，4表示与_事实相反的假设。 3.句5，6表示与_事实相反的假设。 4.句1，2；句3，4；句5，6的句意分别相同吗？_。 5.句2，4，6共同的特点是：_后的倒装句。,查看答案,现在,过去,将来,相同,省略if,一、虚拟语气简介 虚拟语气用来表示说话人的主观愿望或假想，所说的是一个条件，不一定是事实，或与事实相反。 在条件句中，只有是非真实条件句时，才用虚拟语气。重要的是通过句子意思，看假设的条件是否能够实现。能够实现的是真实条件句，就不能使用虚拟语气；反之，则是非真实条件句，要使用虚拟语气。,二、虚拟语气中if条件句型 (1)与现在事实相反的虚拟语气 条件句用动词的过去式(be动词一般用were)；主句用“would/could/might/should动词原形”。 If I knew Arabic，the Arab would not mistake me. 如果我懂阿拉伯语，那个阿拉伯人就不会误会我了。 If he were here，we would congratulate him on his promotion. 如果他在这里，我们就祝贺他晋升了。,(2)与过去事实相反的虚拟语气 条件句用“had过去分词”；主句用“would/could/might/should have过去分词”。 If I had been invited to the wedding reception，I could have taken a few photos with the bride. 如果被邀请参加那次婚宴，我可能就会和新娘一起拍几张照片了。 She would/might have come for the celebration if she hadnt been so busy. 要是不那么忙，她就来参加庆典了。 If I hadnt taken your advice，I would have made a big mistake. 如果没有接受你的建议，我就会犯一个大错误。,(3)与将来事实相反的虚拟语气 条件句用动词的过去式、“should 动词原形”或“were to 动词原形”；主句用“would/could/might/should 动词原形”。 If it should rain，we wouldnt go out. 如果天下雨，我们就不出去。 If he should study/were to study/studied hard，he would live up to his parents expectations. 如果他努力学习，就不会辜负父母的期望。,三、if条件句转换成倒装句 if虚拟条件句中含有should，were，had时，可把这些词移至主语前构成倒装句并省略if。例如： If I were in school again，I would work harder.可转换为：Were I in school again，I would work harder.如果我重返校园的话，我会更努力地学习。 If my lawyer had been here last Saturday，he would have prevented me from going. 可转换为：Had my lawyer been here last Saturday，he would have prevented me from going.如果我的律师上星期六在这里的话，他就会阻止我去。 If there should be a meeting tomorrow，I would come. 可转换为：Should there be a meeting tomorrow，I would come.如果明天有会议的话，我会来的。,解析 根据主句的谓语形式以及语境可知，if条件句应该用过去完成时，表示与过去事实相反的虚拟语气。与过去事实相反的虚拟语气的结构：主句谓语用“should/would/could/mighthave done”，从句谓语用“had过去分词”。,1.They might have found a better hotel if they a few more kilometers.(2018北京，13) A.drove B.would drive C.were to drive D.had driven,答案,解析,1,2,3,4,5,6,7,8,9,10,2.If we the flight yesterday，we would be enjoying our holiday on the beach now.(2018天津，15) A.had caught B.caught C.have caught D.would catch,答案,解析,解析 句意为：如果我们昨天赶上了航班的话，我们现在就在海滩上享受假期了。根据前半句中的时间状语yesterday以及后半部分中的would be enjoying及时间状语now可知，这是一个错综时间条件句。从句表示与过去的事实相反的假设，故用“had动词的过去分词”。,1,2,3,4,5,6,7,8,9,10,3. not for the support of the teachers，the student could not overcome her difficulty.(2017江苏，22) A.It were B.Were it C.It was D.Was it,答案,解析,解析 句意为：如果没有老师们的支持，这名学生不可能战胜困难。此处表示与现在事实相反的假设，从句谓语用were；在非真实条件句中，如果有should，had或were时，可以省略if，而把should，had或were提至主语前，形成部分倒装，故选B项。,1,2,3,4,5,6,7,8,9,10,4.If it for his invitation the other day，I should not be here now. (2016江苏，27) A.had not been B.should not be C.were not to be D.should not have been,答案,解析,解析 句意为：如果不是他前几天邀请我，我现在就不会在这里了。根据句子结构和句意可知，此处为虚拟语气，再结合时间状语the other day可知，这是对过去行为的虚拟，故if从句要用过去完成时。,1,2,3,4,5,6,7,8,9,10,解析 句意为：如果政府和科学家们不共同努力的话，与艾滋病相关的死亡就不会从2005年的最高点降下来。根据“Had the governments and scientists not worked together”可知事情发生在过去，因此主句用would have done表示对过去情况的虚拟。故选D。,5.Had the governments and scientists not worked together，AIDSrelated deaths since their highest in 2005.(2016浙江，15) A.had not fallen B.would not fall C.did not fall D.would not have fallen,答案,解析,1,2,3,4,5,6,7,8,9,10,6.I was wearing a seatbelt.If I hadnt been wearing one，I .(2016天津，15) A.were injured B.would be injured C.had been injured D.would have been injured,答案,解析,解析 句意为：我当时系着安全带。如果我没有系安全带，我就会受伤了。使用虚拟语气，根据if条件句用的had done可知，主句用would have done表示对过去情况的虚拟，而且I和injure是被动关系。故选D。,1,2,3,4,5,6,7,8,9,10,7.Why didnt you tell me about your trouble last week？If you me，I could have helped.(2016北京，34) A.told B.had told C.were to tell D.would tell,答案,解析,解析 句意为：你上周为什么没有告诉我你遇到的麻烦？如果你告诉我的话，我就可以帮助你了。根据第一句可知，此处是对过去发生的事情的虚拟，故if条件句用过去完成时。,1,2,3,4,5,6,7,8,9,10,8.If I it with my own eyes，I wouldnt have believed it.(2015北京，34) A.didnt see B.werent seeing C.wouldnt see D.hadnt seen,答案,解析,解析 句意为：如果不是亲眼看到，我就不会相信这件事。由主句中的谓语动词“wouldnt have believed”可知是对过去情况的虚拟，虚拟条件句的谓语动词应用过去完成时。,1,2,3,4,5,6,7,8,9,10,9. no modern telecommunications，we would have to wait for weeks to get news from around the world.(2014福建，32) A.Were there B.Had there been C.If there are D.If there have been,答案,解析,解析 根据主句中的“would have to”以及句意可知，本句是一个与现在事实相反的虚拟语气，从句应用一般过去时。当虚拟条件句中有had，should，were时，可以将if省略，然后把had，should，were提到主语前面。故选A项。,1,2,3,4,5,6,7,8,9,10,答案,解析,10.We back in the hotel now if you didnt lose the map.(2014北京，34) A.are B.were C.will be D.would be,解析 句意为：如果你不丢失地图的话，我们现在已经回到旅馆了。由now知此处为与现在事实相反的虚拟语气，主句用“would/could/should/might动词原形”，故选D项。,1,2,3,4,5,6,7,8,9,10,PART 2,达标检测,当堂检测 基础达标演练,1.If she had been at school，I _(see) her. 2.I _(let) you go to work now if it werent raining so hard. 3._(have) it not been for the free ticket，I would not have gone to see the film. 4.If I had had her address，I _(not，lose) touch with her. 5._(be) I you，I would buy a new car. 6.If I _(see) him tomorrow，I would invite him home. 7.Were I to do it，I _(do) it in some other ways. 8.If you _(be) more careful，the rice would not have been burnt.,.用所给词的正确形式填空,查看答案,would have seen,would let,Had,wouldnt have lost,Were,should see/were to see/saw,would do,had been,9._，you would take his place. 万一他不来，你将代替他。(倒装结构) 10._ yesterday，he would have asked you about it. 他昨天要是看到了你，他就会问你这事了。(倒装结构) 11._，I would do it at once. 假若我是你，我就会马上做这件事。(倒装结构),查看答案,.用虚拟语气完成句子,Should he not come,Had he seen you,Were I you,12.If you should be interested in our offer，please contact us. _ _ _ _ _ our offer，please contact us. 13.If you had come earlier，you would catch the bus. _ _ _ _，you would catc