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1、虚拟语气用在其它状语从句中 _虚拟语气 1.虚拟语气用在由 as if,as though 引导的方式或让步状语从句中，一般情况下，如果主谓语动词为现在时，从句谓语多用过去时；如果主句谓语为过去时，从句谓语多用过去完成时。虚拟语气用在 even if,even though,whatever 引导的状语从句中，从句谓语可参照由if 引导的虚拟条件从句的谓语，一般用过去时或过去完成时。例如：This old machine runs as if it were a new one.The old worker works as though he were a young man.Even th
2、ough she had been here very soon,she would not catch the train.Example:He has just arrived,but he talks as if he _ all about that.a.know b.knows c.known d.knew I cant stand him.He always talks as though he _ everything.a.knew b.knows c.has known d.had known _ I used a lot of examples I still could n
3、ot get my idea across.a.Since b.But that c.Now that d.Even though 2.虚拟语气用在 so that,lest（唯恐）,in case（万一）,unless,in order that（为了，以便）,that（为了，以至于）,for fear that（生怕，以免）,on condition that（如果）等引导的目的，条件状语从句中，从句谓语 may 或 might+原形动词，也有用 should,can,could+原形动词构成的。例如：The teacher explained the law once more in o
4、rder that we might understand it better.Some people eat so that they may live.Others seem to live in order that they may eat.一些人吃是为了生存，而另一些人似乎是活着就是为了吃。虚拟语气用在其它状语从句中 I left him a note with my address on for fear that he should not know where to see me.The heroes gave their lives that we might live a
5、happy life.为了我们过上幸福生活，英雄们献出了自己的生命。Example:In case I _,I would try again.a.will fail b.would miss c.should fail d.shall miss You should exercise vigilance _ you should be killed.a.so that b.lest c.therefore d.that 3.虚拟语气用在由 whether 引导的让步状语从句中，从句谓语用原形动词。例如：All engines work on this principle,whether th
6、ey be large or small.所有发动机都按这一原理工作，无论它们是大还是小。We must finish the work before we go home,whether it be early or late.无论时间早晚，我们必须在回家前干完工作。谓语可参照由引导的虚拟条件从句的谓语一般用过去时或过去完成时例如虚拟语气用在唯恐万一为了以便为了以至于 而另一些人似乎是活着就是为了吃虚拟语气用在其它状语从句中为了我们过上幸福生活英雄们献出了自己的生命虚拟 论时间早晚我们必须在回家前干完工作所有物质不论是气体液体或固体都是由原子构成在此句型中可省去而将放在主 All matte
7、r,whether it be gas,liquid or solid,is made up of atoms.所有物质，不论是气体，液体，或固体，都是由原子构成。在此句型中，可省去 whether，而将 be 放在主语前。例如：Be it so,we must continue to do the test.We must do our best to fulfil the task,be it ever so hard.Example:_ Ill marry him all the same.a.Were he rich or poor b.Be he rich or poor c.Whe
8、ther rich or poor d.Being rich or poor 练习题：1._,I must do another experiment.a.It is ever so late b.Ever so late it c.Be it ever so late d.Whether be it ever so late 2.The young driver looked over the engine carefully lest it _ on the way.a.goes wrong b.would go wrong c.went wrong d.should go wrong 3
9、.Machines are often oiled so that they _ well.a.ran b.runs c.should run d.running 谓语可参照由引导的虚拟条件从句的谓语一般用过去时或过去完成时例如虚拟语气用在唯恐万一为了以便为了以至于 而另一些人似乎是活着就是为了吃虚拟语气用在其它状语从句中为了我们过上幸福生活英雄们献出了自己的生命虚拟 论时间早晚我们必须在回家前干完工作所有物质不论是气体液体或固体都是由原子构成在此句型中可省去而将放在主 4.Even if he _ very busy,he would have kept on learning Englis
10、h.a.had been b.was c.were d.had being 5.Supposing the weather _ bad,where would you go?a.is b.will be c.was d.were 6._,he could not succeed.a.However,he tried that b.He tried however hard c.However he could try d.However hard he tried 7.Even though the enemy _ wings,they couldnt escape from our enci
11、rclement.a.had b.had had c.have d.has 8.She described the accident as if she _ it herself.a.saw b.has seen c.had seen d.sees 9.He came to meet us at the station for fear that we _ the wrong way.a.take b.should take c.took d.had taken 10.The car looked very dirty,as though it _ hundreds of miles.a.ru
12、n b.runs c.has run d.had run 11.The teacher spoke slowly in order that we _ no difficulty in following him.谓语可参照由引导的虚拟条件从句的谓语一般用过去时或过去完成时例如虚拟语气用在唯恐万一为了以便为了以至于 而另一些人似乎是活着就是为了吃虚拟语气用在其它状语从句中为了我们过上幸福生活英雄们献出了自己的生命虚拟 论时间早晚我们必须在回家前干完工作所有物质不论是气体液体或固体都是由原子构成在此句型中可省去而将放在主 a.should have b.had c.will have d.did
13、nt have 12.All magnets behave the same,_ they large or small.a.how b.are c.be d.were 13.At the beginning he didnt want to speak English lest he _ mistakes.a.will make b.should make c.would make d.can 14.I remember the whole thing as if it _ yesterday.a.happen b.happens c.happened d.happening 15.She
14、stayed at home for a few days so that she _ her mother.a.takes care of b.took care of c.might took care of d.might take care of 16.She took up the meter with care for fear that it _.a.is damaged b.to be damaged c.should be damaged d.was damaged 17.In many cases the heating effect is neglected as if
15、there _ no flow of current along the wire.a.are b.were c.is d.being 18.Ill put the money on the table just in case you _ i t.a.might need b.would need c.needed d.may have needed 谓语可参照由引导的虚拟条件从句的谓语一般用过去时或过去完成时例如虚拟语气用在唯恐万一为了以便为了以至于 而另一些人似乎是活着就是为了吃虚拟语气用在其它状语从句中为了我们过上幸福生活英雄们献出了自己的生命虚拟 论时间早晚我们必须在回家前干完工作所
16、有物质不论是气体液体或固体都是由原子构成在此句型中可省去而将放在主 19.Providing you _ the opportunity to go abroad,which country would you want to visit first?a.have b.will have c.had d.have had 20.The business of each day,_ selling goods or shipping them,went quite smoothly.a.it being b.was it c.it was d.be it 谓语可参照由引导的虚拟条件从句的谓语一般用过去时或过去完成时例如虚拟语气用在唯恐万一为了以便为了以至于 而另一些人似乎是活着就是为了吃虚拟语气用在其它状语从句中为了我们过上幸福生活英雄们献出了自己的生命虚拟 论时间早晚我们必须在回家前干完工作所有物质不论是气体液体或固体都是由原子构成在此句型中可省去而将放在主