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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 thetrain.Example:He has just arrived, but he talks as if he _ all about that.a. know b. knows c. known d. knewI 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 stil
3、l could not get my idea across.a. Since b. But that c. Now that d. Even though2.虚拟语气用在 so that, lest （唯恐）, in case （万一）, unless, inorder 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 explain
4、ed the law once more in order 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 l
5、ives that we might live a 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 missYou should exercise vigilance _ you should be killed.a. so that b. lest c. therefore d. that3. 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 engin
6、es work on this principle, whether they 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。All matter, 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
7、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 poorc. Whether rich or poor d. Being rich or poor练习题：1._, I must do another experiment.a. It is ever so lateb. Ever s
8、o late itc. Be it ever so lated. Whether be it ever so late2.The young driver looked over the engine carefully lest it _ on the way.a. goes wrong b. would go wrongc. went wrong d. should go wrong3.Machines are often oiled so that they _ well.a. ran b. runs c. should run d. running4.Even if he _ very
9、 busy, he would have kept on learningEnglish.a. had been b. was c. were d. had being5.Supposing the weather _ bad, where would you go?a. is b. will be c. was d. were6. _, he could not succeed.a. However, he tried thatb. He tried however hardc. However he could tryd. However hard he tried7. Even thou
10、gh the enemy _ wings, they couldnt escape from our encirclement.a. had b. had had c. have d. has8.She described the accident as if she _ it herself.a. saw b. has seen c. had seen d. sees9.He came to meet us at the station for fear that we _ the wrongway.a. take b. should take c. took d. had taken10.
11、The car looked very dirty, as though it _ hundreds of miles.a. run b. runs c. has run d. had run11.The teacher spoke slowly in order that we _ no difficulty infollowing him.a. should have b. hadc. will have d. didnt have12.All magnets behave the same, _ they large or small.a. how b. are c. be d. wer
12、e13 .At the beginning he didnt want to speak English lest he _ mistakes.a. will make b. should makec. would make d. can14. I remember the whole thing as if it _ yesterday.a. happen b. happens c. happened d. happening15.She stayed at home for a few days so that she _ her mother. a. takes care of b. t
13、ook care ofc. might took care of d. might take care of16.She took up the meter with care for fear that it _ .a. is damaged b. to be damagedc. should be damaged d. was damaged17. In many cases the heating effect is neglected as if there _ no flow of current along the wire.a. are b. were c. is d. bein
14、g18.Ill put the money on the table just in case you _ it.a. might need b. would needc. needed d. may have needed19.Providing you _ the opportunity to go abroad, which country would you want to visit first?a. have b. will have c. had d. have had20.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