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1、虚拟语气讲解及练习一非真实条件句的虚拟情况: 句型条件从句 主句对现在的虚拟were/didshould/would/could/might+v.对过去的虚拟had doneshould/would/could/might+have+done 对将来的虚拟1.were/did2.were to3.should+v.Should/would/could/might+v.1.与现在事实相反的条件e.g. If I were you, I would go at once. If I had HIV, I would know because I would feel sick.2.与过去事实相反e
2、.g. If you had come a few minutes earlier, you would have met him. If she had told him about the danger, he would not have hurt.3.与将来事实相反e.g. If it were sunny tomorrow, I would come to see you. If he should fail in the experiment this time, he would try again. If we were to panic(受惊,惊慌), we should n
3、ot be able to help.4.混合时间条件句：主从句不一定用指同一时间的动词。即:假设条件从句谓语动词发生的时间与主句所假设的谓语动词不一致，叫做混合虚拟语气（错综条件虚拟语气）。主句和从句的谓语动词要依照假设的时间而定。e.g. If you _that late movie last night, you wouldnt be so sleepy.A.havent watched B.didnt watchC. hadnt watched D.wouldnt watchedIf Paul had received six more votes in the last elect
4、ion, he would be our chairman now.If the weather had been finer, the crops would be growing still better.If you had followed the teachers advice, you wouldnt be in the hospital. e.g If I had gone to a key university, I would earn more money now.5含蓄条件句：有时假设的条件不通过条件从句表示而含蓄在介词短语或上下文中。 (1) without 和but
5、for (要不是) 构成虚拟。 e.g Without ( but for ) the party, we wouldnt be so happy. We might have died without your help. = We might have died if you hadnt helped us. (2) otherwise , or ( 否则， 要不然) =ifnot e.g. He studies very hard, or/otherwise he couldnt study so well. I was busy last week, otherwise I would
6、 have come to see you. =If I had not been so busy last week, I would have come to see you. ( 3 ) if only后加句子 “要是就好了” 注意：“if only”e.g. If only I could learn English in one day. If only it wasnt raining. If only Jim had passed the exam. If only Sam would reply to my letter. 6假设虚拟条件倒装。 条件从句中有 shouid,we
7、re,had 三个助动词，可以把 if 省略，并将这三个词提到句首 If I were you, I would give it up. Were I you, I would give it up.If it were not for your advice, we couldnt have got over the difficulties. Were not for your advice, we couldnt have got over the difficulties二虚拟语气用于宾语从句中。现在：过去：未来：过去时（were/did）过去完成时(dad done)would/co
8、uld/might+V. should(不常用)1. wish引起的表示愿望的虚拟语气wish +(that)+主语 +e.g. I wish I could buy a spaceship some day. I wish that he wasnt so lazy. The exhibition was so bored that I wish I had not gone to it.现在：过去：未来：过去时过去完成时过去时2. would rather(that)+从句，表示“愿望”的虚拟would rather (that) + 主语 +e.g. I would rather you
9、 had gone there.(与过去相反) 你要是去那里就好了。 I would rather you stayed at home now.(与现在) I would rather you could go to America tomorrow.3.用于表示意愿,建议，命令，请求，提议等动词后的that宾语从句中，用(should)+动词原形,这类动词有:ask, advise, arrange(安排), beg, command, decide, demand, desire, determine, insist (坚持要求,硬要), intend, propose, object(
10、反对), order, require, request, suggest(建议) 一个坚持，两个命令，三个建议，四个要求。即1.insist 2. order, command 3. advise, suggest, propose 4. demand , require, request, desiree.g. She advised that we should keep the door locked. He suggests that she should leave the dangerous house at once. His face suggested that he wa
11、s angry.(暗示) He insisted that he was innocent.(坚称,坚持说) He insisted that she (should) show him her passport.三 用于主语从句中。 （1）Its necessary /strange/ natural/ important + that-Clause 从句中的动词要用虚拟，即（should）+动词原形Eg.It is important that we ( should ) master a foreign language.It is strange that she refuse to
12、come to the party.Its necessary that we should study hard. （2）Its+ a pity / a shame +thatclause从句中的动词要用虚拟，即（should）+动词原形 e.g Its a pity that I should miss the film. (3) Its + p.p + thatclause从句中的动词要用虚拟，即（should）+动词原形， 其中的p.p 为建议，要求，命令的动词。如：insisted ,ordered , requested ,required ,demanded etc. e.g I
13、t was ordered that the old sick man (should) be sent to the hospital at once.四用于表语从句。主语为表示建议。要求，命令等的名词 如： insistence, order ,advice ,suggestion ,proposal ,reqirement 等e.g My suggestion is that English test( should) be read aloud by students every morning.五用于同位语从句 e.g His suggestion that students sho
14、uld wear school uniform has been agreed.现在:过去:将来:过去时过去完成时过去将来时六用在as if(as though)引导的方式状语(表语)从句中,动词形式和wish宾语从句的形式相同。 as if /though +主语 +e.g. You are talking as if you had seen them. He speaks English as if he were an Englishman. She looks as if she would cry.主语+should+V.(should不能省略)主语+过去时七用在定语从句中It is (about/high) time thate.g. It is time that you should have a class.=It is time that you had a class. 可该上课了(早该上课了，你怎么还不去?) It is time for you to have a class.该上课了.(上课的时间到了.) It is time that you should leave. =It is time you left.八.应用举例:1.Did you submit(递交）your application for a Masters degre
