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1、精选学习资料 - - - - - - - - - 高中英语虚拟语气重点归纳虚拟语气表示 动作或状态与事实相反,或 不行能发生 的情形；一虚拟语气用于 条件状语从句 中 1. 表示与 现在 事实相反或不行能发生：条件状语从句：一般过去时（虚拟语气中 bewere）主句用： wouldshould, could, might+ 动词原形；Eg:If we had time now, we would read it again. If I were you, I would work hard. 2. 表示与 过去 事实相反或不行能发生：条件状语从句：had+过去分词；主句： wouldshoul
2、d, could, might+have+ 过去分词；Eg:If he had taken my advice, he would have succeeded in the test. If I had known your telephone number then, I would have called you. 3. 表示与 将来 的事实可能相反或不行能发生：条件状语从句：一般过去时should +动词原形 were to+动词原形；主句： wouldshould, could, might+ 动词原形；Eg:If it should rain, the crops would be
3、 saved. If it were to snow tomorrow, they would not go out. 注： 虚拟条件句的特别情形1混合 /错综型 虚拟语气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样时,称为 错综条件 句 ,动词的形式要依据它所表示的时间作出相应的调整；Eg:If you had followed my advice, you would be better now. 从句说的是过去,主句是现在 Eg:If I were you, I would have taken his advice. 从句是现在,主句是过去 2省略 if 的虚拟语气假如从
4、句中含有were/ should/ had 时,就可以把这三个词置于句首,省略if. 采纳倒装语序；Eg:If it should happen, what would you do. Should it happen, what would you do. If he had recognized me, he would have come over. Had he recognized me, he would have come over. 3含蓄 虚拟条件句有时候假设的情形不以if 引导的条件从句形式表现出来,而是通过一个介词短语,连词或其他形式表示；名师归纳总结 常用的词或短语有：
5、without, with, but for 要是没有 , otherwise, or, but 等；第 1 页,共 4 页- - - - - - -精选学习资料 - - - - - - - - - Eg:Without your help=If we had not had your help,we could not have succeeded. But for electricity=If there were no electricity,there would be no modern industry. He felt very tired yesterday, or/ othe
6、rwise he would have attended the party. 4在 if it were had been not for 句型 中的虚拟语气 句型中,意为 要不是由于 ；虚拟语气也常用于if it were/had been not for Eg:If it were not for peace, we could not be living a happy life today. If it had not been for your timely help, I would have gone bankrupt. 二虚拟语气用在 名词性从句 中 1.主语从句 中的虚拟语
7、气这种虚拟语气主要用在it is+ 形容词（名词,过去分词）+that+ 主语 +should+ 动词原形（should 可以省略）这种结构中；常见的这类形容词有：strange, important, regretful. 常见的这类过去分词有：ordered, suggested. advisable, anxious, better, desirable, surprising, natural, necessary, decided, demanded, recommended, requested, desired, required, 常见的这类名词有：duty, pity, no
8、 surprise, no wonder, regret, shame. Eg:It was suggested that he（should）join the club activities. It is strange surprising, disappointing that she should not have been invited. It is a pity that he should refuse to accept the offer. 2. 宾语从句 中的虚拟语气 wish 后面所跟宾语从句谓语动词用虚拟语气（意为要是,但愿 就好了）,其形式主要有三种：表示对现在情形
9、的虚拟：wish 后接一般过去时的从句表示对过去情形的虚拟：wish 后接过去完成时/should,could have done 表示对将来情形的虚拟：wish 后接 would ,could+ 动词原形Eg:I wish it were spring all year round. I wish it would be fine tomorrow. She wished she had stayed at home. 在表示 建议,命令,要求等动词后的从句要用should+ 动词原形；此类动词有： suggest, advise, propose, demand, require, ins
10、ist（要求） , order, prefer, command, ask, request. Eg:The teacher ordered that all the books should be handed in on time. 注： 当 suggest 表示 示意,说明 之意； insist 表示 坚持认为,坚持说 之意时, 从句 不用虚拟,用正常的陈述语气；Eg:The man insisted that he had never stolen the money. The smile on his face suggested that he was satisfied with
11、 life. 3. 表语从句和同位语从句中的虚拟语气在表示建议,命令,要求的名词后的表语从句或 同位语从句中的谓语动词要用（should）+动词原形；常见名词有：advice, desire, request, demand, proposal, suggestion, preference, requirement, order. 名师归纳总结 - - - - - - -第 2 页,共 4 页精选学习资料 - - - - - - - - - Eg:He gave orders that the guests should be hospital entertained. His propos
12、al is that we should get rid of the bad habits. 三虚拟语气在其他情形中的使用1.在 as if/ as though引导的状语从句 其形式如下：中,如从句与事实相反,就要用虚拟语气；主语 +as if/ though + 主语 +一般过去时（从句的动作与主句同时发生）主语 +as if/ though + 主语 +would/could+ 动词原形（从句的动作相对主句来说在将来发生）主语 +as if/ though + 主语 +过去完成时（从句的动作先发生于主句动作之前）Eg:He talks as if he knew all about i
13、t. She speaks English well as if he had studied in America. He learns English so hard as if he would go abroad. 2.在 it is high time that 句型 中也用虚拟语气,从句常用过去式,有时也用should +动词原形,表示早该做而没做的事,含建议的意味；Eg:It is time that we went home. 注： 此句型中,留意与It/This is the +序数词 +time that+ 现在完成式的区分；Eg:This is the first tim
14、e that I have been here. 3.would rather 后接动词原形,但接从句时要用虚拟语气（宁愿,但愿）；Would rather + 主语 +一般过去时（表示与现在或将来相反）Would rather + 主语 +过去完成时（表示与过去相反）Eg:I d rather he didnt go now.wish 的用法一样；,表示的意思为 本I d rather you hadnt done it.4. if only 后接从句也用虚拟语气,其形式与5. 动词 hope, intend, mean, plan, want, think等词用过去完成的形式想,本准备,本认为 Eg:He had meant to buy the furniture last week, but it rained. （他上周本准备去买那件家具,但却下雨了）名师归纳总结 非真实条件句中的虚拟语气（以动词do 为例）第 3 页,共 4 页- - - - - - -精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 4 页,共 4 页