虚拟语气1教学课件.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,虚拟语气,should have done/ought to have done,shouldnt have done/oughtnt to have done,be,supposed,to have done,could have done/couldnt have done,might have done,neednt have done,would have done/wouldnt have done,情态动词,+have done,试比较以下两个句子：,1.If it,doesnt rain,tomorrow,we,will go,to the park.,2.If it,werent to rain,tomorrow,we,would go,to the park.,第一句是真实条件句，表示假设的情况有可能发生。,第二句是虚拟条件句，表示假设的情况是将来不大可能发生的。,时态,虚拟条件句,主句,与,现在,事实相反,If,主语,did,(be,一般用,were),主语,should/would/could/might,do,与,过去,事实相反,If,主语,had done,主语,should/would/could/might,have,done,与,将来,事实相反,If,主语,did/were,should do,were to do,主语,should/would/could/might,do,if,引导的虚拟条件句,如果他有时间的话，他就会和你走。,If he,had,time,he,would go,with you.,如果我是你，我就会先做作业。,If I,were,you,I,would do,the homework first.,如果我中奖的话，我会为艾滋病人建一家专门的医院。,If I,won,the lottery,I,would build,a special hospital for,AIDS,patients.,如果我昨晚不忙的话，我就和你去看电影了。,If I,hadnt been busy,last,night,I,would have gone to see,the film with you.,如果我知道你电话号码的话，我早就给你打电话了。,If I,had known,your telephone number,I,would have called,you already.,如果你之前听从我的建议的话，你就不会不通过考试了。,If you,had followed,my advice,before,you,wouldnt have failed,in the exam.,如果今晚下雪的话，我们就不出去了。,If it,were to snow,this evening,we,would not go out,.,如果明天是礼拜天的话，我就去看望我奶奶。,If it,were,Sunday tomorrow,I,would go to visit,my grandma.,如果她明天来的话，一切就没有问题了。,If she,should come,tomorrow,everything,would be,all right.,注意,1,：当,主句和从句的动作发生时间不一致时,If you,had listened,to the doctor,before,you,would be,all right,now,.,从句动作指过去，,主句动作指现在,：,从句动作指过去，,主句动作指将来,：,If you,hadnt hurried,here,just now,you,would miss,the meeting,tomorrow,.,如果条件从句中的动作和主句动作发生的时间不一致时，动词的形式可以根据它所表示的时间加以调整。,If he had set out earlier,he _ home now.,A.is B.were,C.would be D.could have been,注意,2,：当条件从句中有,should,were,had,三个助动词时,可以把,if,省略，并将这三个词提至句首，构成倒装句。,If,I were you,I would give it up.,If,she were to win the game,she would phone you immediately.,Were,I you,I would give it up.,Were,she to win the game,she would phone you immediately.,If,I had had time,I would have run round that lake again.,If,there should be a flood,what should we do?,Had,I had time,I would have run round that lake again.,Should,there be a flood,what should we do?,If,it shouldnt rain tomorrow,we would go hiking.,Shouldnt,it rain tomorrow,we would go hiking.,Should,it not rain tomorrow,we would go hiking.,If my brother hadnt got sick,I would have gone there with you.,巩固：如果从句中出现,should,had,were,这三个词，就可以把,if,省略，同时把这三个词提至句子开头。,Had,my brother not got sick,I would have gone there with you.,Hadnt,my brother got sick,I would have gone there with you.,注意,3,：我们可以用介词短语代替条件状语从句,1.,Without,air,there,would be,no life.,If there were no air,there would be no life.,2.,But for,your help,I,couldnt have finished,the job on time.,If you hadnt helped me,I couldnt have finished the job on time.,常用的介词有,without,but for,but,otherwise,or,等,He was busy,otherwise,he_,(come).,He _(come),but,he is very busy now.,I,should have helped,him,but,I _(out).,Without,sunlight,peoples life _(be)different from today.,But for,his help,you _(pass)the exam.,would have come,would come,was out,would be,couldnt have passed,名词性从句,宾语从句,一个坚持,:,insist,两个命令,:,order,command,三个建议,:,advise,suggest,propose,四个要求,:,demand,require,request,desire,主语从句,It is+,形容词,/,过去分词,/,名词,+,从句,表语从句,同位语从句,金,P118,It is(high/about)time sb.,did,sth,.,=It is(high/about)time sb.,should,do,sth,.,hope,think,want,expect,plan,intend,suppose,mean,If only =How I wish (,与,only if,不同,),wish,as if=as though,even if=even though,would rather,时态,虚拟条件句,主句,与,现在,事实相反,If,主语,?,主语,?,与,过去,事实相反,If,主语,?,主语,?,与,将来,事实相反,If,主语,?,主语,?,if,引导的虚拟条件句,