虚拟语气PPT(PPT40页)42212

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,*,The Subjunctive Mood,Grammar,1.If I,were,Andy Lou,I,would,be,in Hong Kong now.,2.I wish I,were,a millionaire.,3.We suggest that everyone,should help,the AIDS patients.,When to use the Subjunctive Mood in English?,hypotheses,wishes,suggestion,虚拟语气,The Subjunctive Mood,虚拟语气,是一种特殊的动词形式,(verb structure),用来表示说话人所说的话不是一个事实,(fact),，而只是一种假设,(,hypotheses,),愿望,(wishes),、建议,(suggestion),或怀疑,(doubt),等等。,The definition of the Subjunctive Mood,1.,虚拟语气在条件句中,1)“,表示不太可能出现的情况,”,条件从句一般用过去时,主句用,would do,should do,或,might/could do;,虚拟语气应该注意的几点,:,2),表示“本可能发生却未发生的事情”,条件从句用过去完成时,主句用,would have done,should have done,might/could have done.,The old men,would find,it difficult to get a job if they left the farm.,I,should be surprised if it was,less than five pounds.,If I,frightened,those birds,they,might fly off,and I,would never see,them again.,If I,were,you,I,would accept,the offer.,If I,were asked,to define my mood,Id say“bored”.,If he,had taken,his doctors advice,he,might not have died,so soon.,If he,had realized,that,he,would have run,away,while there was still time.,If she,had not married,she,could have become,special in the filed.,2.,虚拟语气在条件句也可用来表示“将来不太可能出现的情况”,条件从句用,should do,were to do,或一般过去时,主句用,would do,should do,could/might do.,If it,should rain,tomorrow,the sports meet,would have to,be put off.,I,could see,the surface of the moon with my own eyes if I,were to,go to the moon some day.,What,would,you do if he,failed,to come tomorrow?,注意,:,含有,should,的条件句,主句可以用一般现在时或一般将来时,.,例如,:,If there,should be,another flood,what shall we do?,Ask,her to leave a message if she,should come,.,3.,在正式英语文体中,if,从句中的第一个动词如果是,should,were,或,had,可将此动词置于句首,替代,if,例如：,Were,it all true,it,would,still not excuse their actions.,Had,the captain been more careful,his ship,would not have sunk,.,Should,any visitors come,I,would say,you are not here.,4.if only,和,suppose(supposing),也可以引导虚拟从句,If only I,had,more time,I,could go,there to help them.,Supposing it,were,fine tomorrow,would,you go climbing the mountain with us?,5.If it were not/had not been for,也是常见的虚拟句型,意思是“要不是,”,例如,:,If it,had not been for,your help,we,would not have achieved,so much in our work.,If it,were not for the wise decision,we,could not be living,a happy life.,6.,虚拟语气用于,I wish,的宾语从句中,:,表示现在时间,动词用一般过去时和过去进行时,(be,动词用,were/was),。表示过去时间,动词用过去完成时和过去完成进行时。,表示将来时间,动词用,would/could,等,+,动词原形。,I wish I,knew,how to operate this computer.,I wish he,werent,so lazy.,I do wish everything,would be,as quiet as before.,I wish we,hadnt been,working overtime yesterday.,注意,:,这里,I wish,所表达的意思与,if only,差不多。以上的句子都可以用,if only,来代替,I wish,例如,:,If only I,knew,how to operate this computer.,If only we,hadnt been working,overtime yesterday.,7.Its(about/high)time+,从句，表示“该做而未做的事”,是一种婉转的建议,从句中的动词用一般过去时。例如：,It is high time we,began,to work.,Weve enjoyed the evening,but its time we,went,home.,Its about time the boy,learned,to behave himself.,8.,表示“要求、建议、命令,”,等动词,demand,require,suggest,insist,advise,order,等后接宾语从句时,从句谓语动词一般用虚拟语气,即,should+,动词原形,(do/be done),should,也可以省略例如：,He insisted that John,(should),do the job.,We suggest that the meeting,(should)not,be postponed.,The union demanded that the wages,(should)be,raised by 20%.,常用的这类动词是,:ask(,要求,),advise(,建议,),command(,命令,),decide(,决定,),demand(,要求,),insist(,坚持,),move(,提议,),order(,命令,),propose(,提出,),require(,要求,),request(,请求,),suggest(,建议,),urge(,主张,),如果这些动词不是表示“要求、建议、命令”等意思时,这时宾语从句一般不用虚拟语气。,例如：,He,insisted,that I was wrong.(,这儿,insist,意思是“坚持认为”）,The expression on her face,suggests,that she knows the secret.,(,这儿,suggest,意思是“表明”）,虚拟语气在条件句中除了表示与将来、现在及过去事实相反的情况以外，还需要注意以下几点：,一、错综时间条件句,当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时，动词的形式要依据它所表示的时间来调整。如：,If you had taken the medicine yesterday,you might be well now.,(,条件句与过去事实相反,主句与现在事实相反。,),如果你昨天吃了药,你的病今天也许就好了。,二、省略,if,的条件句,如果,if,条件句中有,were,，,had,，,should,时，可省略,if,，把,were,，,had,，,should,放在主语前。这种结构主要用于书面语中。如：,Were it necessary(=If it were necessary),I might resign,如果需要的话，我可以辞职。,Had you informed me earlier(=If you had informed me earlier),I wouldnt have signed the contract.,要是你早点告诉我的话，我是不会签那份合同的。,三、含蓄条件句,有些句子虽不含条件句，但意思和含条件句的句子差不多，这种句子叫含蓄条件句，这种句子中也用虚拟语气。含蓄条件句的“暗含”之意一般用三种方法来表达：,1.,条件暗含在短语中。,如：,Without air,there would be no living things.,没有空气，就没有生命。,（条件暗含在介词短语,Without air,中）,But for your help,I couldnt have made so much progress.,要不是你的帮助，我不可能取得这么大的进步。,（条件暗含在介词短语,But for your help,中）,This same thing,happening in wartime,would result in disaster.,同样的事，如果发生在战时，就会酿成大祸。,（条件暗含在分词短语,happening in wartime,中）,2.,条件暗含在上下文中。,如：,You might stay here forever.,你可以永远待在这儿。,（可能暗含,if you wanted to,）,They would have succeeded.,他们本来是会成功的。,（可能暗含,if they had kept trying,）,3.,在不少情况下，虚拟式已经成为习惯说法，很难找出其暗含的条件。如：,I wouldnt have dreamed of it.,这是我做梦也不会想到的。,四、省去主句的非真实条件句,非真实条件句如果省去主句，通常表示一种不可能实现的愿望。,这种条件句常用,if only,来引导。如：,If only I had known where to find you just now.,刚才我要是知道去哪儿找你就好了。,1.If he had not lost his money,he _ the piano last week.A.would buy B.had bought C.bought D.could have bought,2.If we were to be 200 years old,we _ everything.A.w