专四语法讲解虚拟语气课件.ppt

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1、虚拟语气,1.,主从句谓语动词的时态,(1),掌握主从句谓语动词的规范搭配,:,主,句,从,句,与现在事实相反,would/,情态动词,过去式,+do,were(,不分人,称,)/did,与过去事实相反,would/,情态动词,过去式,+have,done,had done,与将来事实相反,would/,情态动词,过去式,+do,should do/were,to do,真题举例：,?,1.All of us would have enjoyed the party,much more if there _ quite such a crowd,people there.,（,00,49,）,

2、?,A.weren,t,B.hasn,t been,?,C.hadn,t been,D.,wouldn,t be,?,C,?,?,If there were no subjunctive mood,English _,much easier to learn.(09,52),?,A.could have been B.would be,?,C.will be D.would have been,?,B,?,_ for the fact that she broke her leg,she might,have passed the exam.(02,60,）,?,A.Had it not be

3、en B.Hadn,t it been,?,C.Was it not D.Were it not,?,A,?,(2),区分主从句表示的不同时间概念：,?,主从句谓语动词所指时间不同，这叫做错综时间,条件句，动词形式应根据实际情况来调整。如：,?,Had it not been for the timely investment from the,general public,our company would not be so thriving,as it is.,?,(,主句与现在事实相反，从句与过去事实相反,),?,Had Paul received six more votes in

4、the last election,he,would be our chairman now.,?,(,主句与现在事实相反，从句与过去事实相反,),真题举例：,?,1.Had Judy been more careful on the maths exam,she _ much better results now.(08,52),?,A.would be getting B.could have got,?,C.must get D.would get,?,D,?,2._ if I had arrived yesterday without letting you,know beforeha

5、nd?(04,54),?,A.Would you be surprised B.Were you surprised,?,C.Had you been surprised D.Would you have been,surprised,?,A,?,(3),识别事实和假设混合句：,?,Your math instructor would have been happy to give,you a make-up examination had you gone and,explained that your parents were ill at the time.(,句子,前半部分为假设情况，

6、而“父母病了”是事实,),?,I would have gone to visit him in the hospital had it,been at all possible,but I was fully occupied the whole,of last week.(,前半部分为假设，后半部分是事实,),真题举例：,?,1.He would have finished his college,education,but he _ to quit and find a job,to support his family.,（,07,60,）,?,A.had had B.has,?,C.

7、had D.would have,?,C,2.,名词性从句的虚拟形式,?,从句的谓语动词需用,(should+),动词原,形表示虚拟。,?,(1),下列表示建议、提议、命令、惊,奇、不满等动词做谓语时，,that,宾语,从句中的动词用虚拟形式：,?,desire,advise,recommend,command,direct,order,ask,demand,request,require,insist,maintain,propose,prefer,urge,vote,。,?,(2),下列形容词和分词做表语或补语时，,that,主语从句中动,词用虚拟形式：,?,advisable,desir

8、able,insistent,preferable,urgent,appropriate,compulsory,crucial,essential,imperative,important,necessary,obligatory,possible,probable,proper,vital,advised,arranged,commanded,demanded,desired,ordered,proposed,recommended,requested,required,suggested,surprised,。如,：,?,The board deem it urgent that thes

9、e files should be,printed right away.,?,It is essential that all these figures be checked twice.,真题举例：,?,1.It is absolutely,essential,that William,_,his,study in spite of some learning difficulties.(07,65),?,A.will continue B.continued,?,C.continue D.continues,?,C,?,2.It is,imperative,that the gover

10、nment,_,more,investment into the shipbuilding industry.(06.59),?,A.attracts B.shall attract,?,C.attract D.has to attract,?,C,?,3.It is imperative that students _ their term,papers on time.(o4,56,）,?,A.hand in B.would hand in,?,C.have to hand in D.handed in,?,A,?,4.It is necessary that he _ the assig

11、nment,without delay.(10,60),?,A.hand in B.hands in,?,C.must hand in D.has to hand in,?,A,?,5.I am surprised _ this city is a dull place to,live in.(2006,57),?,A.that you should think,?,B.by what you are thinking,?,C.that you would think,?,D.with what you were thinking,?,A,?,(3),下列名词接同位语从句或表语从句时，从句中,

12、动词用虚拟形式：,?,insistence,preference,recommendation,suggestion,proposal,motion,desire,requirement,request,order,necessity,importance,regulation,rule,resolution,understanding,。,如：,?,John Wagner,s most enduring contribution to,the study of Afro-American poetry is his,insistence that,it be,analyzed in a re

13、ligious,as,well as worldly,frame of reference.,真题举例,?,He left orders that nothing _ touched until,the police arrived here.,(97,43),?,A.should be B.ought to be,?,C.must be D.would be,?,A,?,I wish+that,?,用于,wish,后面的从句，表示与事实相反的情,况，或表示将来不太可能实现的愿望。其,宾语从句的动词形式为：,真实状况,Wish,后,从句动作与主句,动作同时发生,现在时,过去时（,be,的过,去

14、式为,were,）,从句动作先于主,句动作发生,过去时,过去完成时,（,had+,过去分,词）,将来不大可能实,现的愿望,将来时,would/could+,动,词原形,?,I wish I were as tall as you.,我希望和你一样,高。,He wished he hadn,t said that.,他希望他没讲,那样的话。,I wish it would rain tomorrow.,我希望明天下,雨就好了。,3.,含蓄虚拟条件句的谓语动词形式,?,含蓄虚拟语气是指假设条件不通过,if,从句表达，而是暗含,在其他结构中。,?,(1),连词,but,but that,or,or

15、else,；副词,otherwise,unfortunately,等表示转折假设。如：,?,A safety analysis,would have identified,the target as,a potential danger.Unfortunately,it was never done.,?,Victor obviously doesnt know whats happened;,otherwise he,wouldnt have made,such a stupid,remark.,?,I used my calculator;otherwise,I,d have taken,

16、much,longer.,?,(2),介词短语暗含假设条件，常用的有：,without,but for,under more favorable conditions,等。如：,?,But for your timely advice,I would never have,known how to go about the work.,（,94,年）,?,The storm delayed us.But for the storm we,would have been in time.,?,Without your timely help,my daughter would,have drow

17、ned.,?,(3),intended/meant/hoped/wished/planned,或,was/were+,不定式完成式或,had intended/,meant/planned/hoped/wished+,不定式一,般式暗示虚拟语气。,?,如：,I intended to have called on you,but I,was busy at that time.,?,(4),情态动词完成式暗示虚拟语气。如：,?,I should have called to make an airline,reservation,but I didnt.,真题举例：,?,1.You _ Jim

18、 anything about it.It was none of his,business.(00,48),A.neednt have told,B.neednt tell,?,C.mustnt have told,D.mustnt tell,?,A,?,2.Arent you tired?I _ you had done enough for,today.(09,61),?,A.should have thought B.must have thought,?,C.might have thought D.could have thought,?,A,?,3.You _ Mark anyt

19、hing.It was none of his,business.(98,52),?,A.needn,t have told B.needn,t tell,?,C.mustn,t have told D.mustn,t tell,?,A,4.,常用虚拟形式的句型,?,(1),从句中动词用过去式或过去完成式表示虚拟的,句型：,?,would rather would as soon,?,as though,suppose,?,had rather would sooner,?,as if,supposing,?,If only,?,It is(high)time that,(,从句中动词只用过去

20、式,),?,I would rather have coffee than tea.,?,-John wants to see you today.,?,-I would rather he came tomorrow than,today.,?,Id rather you hadnt told,me about it.,?,Id just as soon work at home and not have the,hassle of the subway every morning.,I would just as soon you didnt drive the car,while Im

21、gone.,?,(2)If it were not for,(,与现在事实相反,),?,If it had not been for,(,与过去事实相反,),相当于,but for,。如：,?,If it had not been for his help(=but for his help),we,would not have succeeded.,?,_ for the fact that she broke her leg,she might,have passed the exam.(02,60,）,?,A.Had it not been B.Hadn,t it been,?,C.Wa

22、s it not D.Were it not,?,A,(4)lest/for fear that/in case,从句谓语用,(should+),动词原形。如：,The mad man was put in the soft-padded cell,lest he injure himself.,Lest,的用法,?,Lest,?,conj.,用于,fear,be afraid,之后,等于,that,所连接的状语从,句里常用,should,或原形动词,以免；生怕；唯恐,?,例子：,Be careful lest you fall from that tree.,要当心,以免,从树上摔下来。,?

23、,I was afraid lest he might come too late.,我怕他来得太晚。,?,lest,的从句一般要用虚拟语气，形式是“,should+,动词,原形”或省掉,should,。,for fear that,和,in case,从句一般,用虚拟语气，但有时也可以用陈述语气。,?,in case+,主语,+,动词可跟在陈述句或命令句后面：,lest,除,在较正式的书面英语中出现外，一般不常用。,I obeyed,her lest she should be angry.,我得顺着她，免得她生气。,让步状语从句中的虚拟语气,Though,if,even if,even t

24、hough,whatever,however,granted that,等连接代词或副词,引导的让步状语从句中可以使用虚拟语气,，但是主句一般用直陈语气。,Eg:However,dangerous it might be,I would,have a try.,We wont change our plan even if,the,rumor be true.,?,（,2,）,在,whatever,，,whichever,，,whenever,，,whoever,，,wherever,，,however,，,no matter wh-,word,等引导的让步状语从句中，从句虚拟语气结,构为：,

25、?,may+,动词原形（指现在或将来）。,如：,?,We will finish it on time no matter what/whatever,may happen.,?,不管发生什么事，我们都要按时完成。,?,We will find him wherever/no matter where he may,be.,?,无论他在哪里，我们都要找到他。,?,?,may+,完成式（指过去）,，主句结构不限。,如：,?,You mustn,t be proud whatever/no matter,what great progress you may have made.,不管你取得,了多

26、么大的进步，你也不能骄傲（,from,）。,?,We must respect him no matter what/whatever,mistakes he may have made.,不管他翻过什么错误，,我们必须尊敬他。,?,?,（,3,）,在,though,，,although,等引导的让步状,语从句中，从句虚拟语气结构为,should+,动词原形，主句结构不限。,如：,?,Although/Though he should often be late,，,he is a good student.,尽管他经常迟到，他还,是个好学生。,?,Although/Though he sho

27、uld be secretary,，,he must obey the rules.,尽管他是书记，他也,必须遵守规定。,Though,和,as,的,区别,?,1,、,as,引导让步状语从句时必须倒装，而,though,引导让步状语从句时可以倒装也可以不倒装。,?,如：,?,虽然很晚了，但我们还是继续工作。,?,正：,Late as though it was,we still went on working.,?,正：,Though Although it was late,we still went on,working.,?,误：,Late although it was,we stil

28、l went on working.,?,误：,As it was late,we still went on working.,?,2,、,though,可以放在主句后面，用逗号隔开，,as,不可以。,?,Strange though it may sound,I was pleased it was over.,?,=I was pleased it was over,，,strange though it may,sound.,(5)whether,or,有时谓语用,be,的原形，引导让步虚,拟从句，这种用法经常采用倒装结构。如：,Church as we use the word re

29、fers to all religious,institutions,be they Christian,Islamic,Buddhist,Jewish,and so on.,The business of,each day,be it selling goods or shipping,them,went quite smoothly.,?,3,、在“开放式条件句”,(,通常表示一个极,可能发生的事情,),和让步状语从句中,should,是被省略了的。在这种情况下，如果,if,省略，,动词,be,与主语的位置要倒装。,?,如：,、,If any person be guilty of a c

30、rime,the court,shall have the right to appeal.(,任何人犯罪，,法院有权起诉。,),Be any person guilty of a crime,the court shall,have the right to appeal.,?,、,Whether she be right or wrong,she,will have my support.(,不管她是对还是错，,我都会支持她的。,),Be she right or wrong,she will have my,support.,?,注意：如果条件从句为否定式，要将,not,置于主,语之后，

31、而不置于主语之前。,?,例如：,?,要不是我亲眼所见，我都不会相信了。,?,误：,Hadn,t I seen it with my own eyes,I would not,have believed it.,?,正：,Had I not seen it with my own eyes,I would not,have believed it.,would rather(than),的用法,?,一、,would rather,意思是“宁愿、宁可、更、最,好、还是为好”，后接动词原形,常省略为,d,rather,，表示优先选择的一种方式,?,其,否定形式,是,would rather not

32、do sth,。,would,rather,没有人称和数的变化，所有的人称一律用,would rather,。,?,“,would rather+,动词原形,”是英语中常见的一个,惯用句式，美国英语中多用,had rather,。,would,(had),在此决无“过去”之意，它是一个情态助,动词，且无词性、时态变化。,?,例：,?,If you,d rather be alone,we,ll all leave here.,如果,你宁愿独自呆着，那我们都离开这儿。,?,He,d rather work in the countryside.,他宁可到农,村去工作。,?,二、,如果在两者中进行

33、取舍，表示“宁愿,而,不愿,，与其,宁可,”,的意思时，则可,用,would rather,than,或,would,rather than,的句型,?,例：,?,I would rather watch TV at home than go to the,cinema.,?,我宁可在家看电视而不愿去看电影。,?,The children would walk there rather than take a,bus.,?,孩子们宁愿步行去那里而不愿乘公共汽车。,?,请注意,:,?,1,）,would rather,than,/would,rather than,也可以颠倒为：,rather

34、than,would,。,Would(rather),和,than,后都接不带,to,的动词不定式，,若选用的动词相同，那么,than,后的动词可以省,略。,?,例,:I would rather have noodles than rice.,我宁愿,吃面条也不吃米饭。,?,Rather than work in such bad condition,he would,give up.,与其在这样差的条件下工作，他宁愿放,弃。,?,2),使用,would rather,than,句型时要注意“平行,结构”，即在,than,的前后要用两个同类的词或,词组，如两个名词、两个不定式、两个介词短语,

35、等。,?,例,:,?,I would rather go to work by bike than by bus.,?,我宁愿骑自行车也不愿乘公共汽车去上班。,?,I would rather talk with his mother than with his,father.,?,我宁愿和他妈说话而不愿和他爸说话。,?,三、在疑问句式中，,would rather,与,would,rather,than,中的,would,要放在主语之前,?,例,Would you rather stay here or go home?,你愿,意呆在这里，还是回家？,?,Which would you ra

36、ther have,apples or bananas?,你喜欢吃苹果还是香蕉？,?,Would you rather read a novel than read a poem?,你宁愿看小说而不愿朗读诗歌吗？,?,四、,would rather/sooner,和,prefer/would prefer,的区别,:would rather,和,would sooner,之间一般没,有区别，但经常接触到的是,would rather,。,?,例,:,?,Tom would rather/sooner read than talk,?,汤姆宁可读书而不愿谈天。,?,Tom prefers rea

37、ding to talking,?,汤姆喜欢读书而不喜欢谈天。,?,请注意,:,?,1,）,would rather,后跟不带,to,的不定式,+than+,不带,to,的不定式，而,prefer,后跟动名词,+to+,动名词。,有时,prefer,后面也可跟名词。,?,例,:,?,He prefers wine to beer,=He would rather,drink wine than beer,?,他喜欢喝红葡萄酒而不喜欢喝啤酒。,?,I prefer tennis to golf,=I,d rather play tennis,than golf,?,我喜欢打网球而不喜欢打高尔夫球

38、。,?,2,）某些,prefer+,名词的情况不能用,would rather,完全确切地表达出来：,?,例：,?,He prefers dogs to cats,（他喜欢狗而不喜欢,猫。）和,He would rather have dogs than,cats,（他宁可养狗而不愿养猫。）,?,很明显，这两句的意思并不完全相同。,?,3,）,would rather+,不带,to,的不定式有时可代替,would prefer+,带,to,的不定式。,?,例：,?,I,d rather fly than go by sea,=I,d prefer to,fly,我宁愿乘飞机也不愿乘船。,?,这

39、两个结构后面带名词时情况也一样：,例,：,Would you like some gin,？,?,I,d prefer a coffee,=I,d rather have coffee,than gin,?,您想喝点杜松子酒吗？,?,我想喝点咖啡。,/,我想喝点咖啡，不想喝杜松,子酒。,?,4,）,would rather/sooner,和,would prefer,后面都可,跟完成式，但后者带,to,。,?,例,：,?,We went by sea but I,d rather have gone by,air=I,d prefer to have gone by air,?,我们是乘船去的

40、，可我本想乘飞机去。（我愿意,乘飞机去，可我的愿望未能实现。）,?,这和,would like+,不定式的完成式有点相似，,would like+,带,to,的不定式的完成式也表示未能实,现的愿望,。,rather than,的用法,?,.,rather than,不与,would,连用时，表示客观,事实，意为“是,而不是,；与,其,不如,”,。它连接的并列成分可以,是名词、代词、形容词、介词,(,短语,),、动名,词、分句、不定式、动词等。现分述如下,：,?,?,(1),连接两个名词或代词,?,He is an explorer rather than a sailor.,与其说他,是一个海

41、员，不如说他是一个探险者。,?,You rather than I are going to go camping.,是,你而不是我要去要野营。,?,注意：,rather than,连接两个名词或代词作主语,时，谓语动词应与,rather than,前面的名词或代,词在人称和数上保持一致。,?,(2),连接两个形容词,?,The sweater she bought was beautiful rather,than cheap.,?,与其说她买的这件羊毛衫便宜不如说它漂,亮。,?,(3),连接两个分句,?,We should help him rather than he should,he

42、lp us.,是我们应该帮助他而不是他应该帮,助我们。,?,(4),连接两个介词,(,短语,),或动名词,?,We will have the meeting in the,classroom rather than in the great hall.,我,们是在教室里开会，不是在大厅里。,?,She enjoys singing rather than dancing.,她喜欢唱歌，而不喜欢跳舞。,?,?,(5),连接两个不定式,?,I decided to write rather than(to)telephone.,我,决定写信而不打电话。,?,注意：,rather than,后接不

43、定式时，不定式可以带,to,，也可以不带,to,如上句。但,rather than,位于句,首时，则只能接不带,to,的不定式。,?,如：,Rather than allow the vegetables to go bad,he sold them at half price.,?,他唯恐蔬菜烂掉，把它们以半价卖掉了。,?,(6),连接两个动词,?,He ran rather than walked.,他是跑来的，而不是,走来的。,?,注意：这里,rather than,后用了,walked,，而没有用,walk,，表示客观事实，而不是主观愿望。如果换,成,walk,，则作“宁愿,而不愿,”,解。,