雅思考试虚拟语气知识点整理

虚拟语气（Subjunctive mood）

      ①用来表示说话人所说的话不是一个事实，而是一种假设，推测，怀疑；

      ②是表示说话人的愿望，要求，命令，建议等。

掌握基本定义后，我们再来看看常见的类型：

一、虚拟语气的常见形式

（1）if条件从句+主句

      1. If it were not raining, we should go for a picnic.

      2.She would have gone to the party if she had been invited.

      3.If it should fail, I would try again.

      4.If you should not come tomorrow, we would put off the meeting till next week.

      Attention:在虚拟语气的从句中，动词be的过去时态一律用were, 不用was，即在从句中be用were代替.

e.g:如果他在这儿，一切都会好起来。

      If he were here, everything would be all right.

（2）常用虚拟语气的句型（命令，要求，建议等）

1. 动词 + 宾语从句

      一个坚持：insist;

      两个命令：order, command;

      三个建议：suggest, propose, advise;

      四个要求：desire, demand, ask, require

      I propose that we (should) set a dead line for handing in the plans.

      I suggest that we (should) set off at once.

      I insisted that we (should) decide what to do with him.

      Attention:虚拟语气形式：(should) + 动词原形

2. It is (was) + 上述动词的过去分词 + that主语从句

      It is demanded that he (should) leave at once.

      It is requested that she (should) give a performance at the party.

3. Order(suggestion, idea, proposal,advise)  + be + 表语从句

      My advice is that we (should) send for a doctor.

      Our suggestion is that you (should) be first to go.

4. It is (was) + important / necessary / strange / surprising / natural / possible / a pity / no wonder + that 主语从句

      It is best that he (should) set off at once.

      It is important that everybody (should) be told all the facts.

二、虚拟语气的三种活用现象

（一）、含蓄条件句

      含蓄条件句就是虚拟条件暗含在短语或上下文中，从句不表现出来。这时，必须根据句中表述的意义以及某些特定的信息词来进行判断。

1.Without electricity, human life would be quite different today.

      A. is      B. will be      C. would have been     D. would be

      Without electricity = If there were no electricity

（二）、时间错综句

      从句与主句或上下文所表述的时间不一致。在这种情况下，我们切不可照搬某种形式，而应该按照句中所表述的时间关系，再选择相应的虚拟形式。例如：

If the flower had been watered, it wouldn’t die now. 

        A. wouldn’t die                     B. is dead  

        C. had been dead                 D. will not die

（三）、虚实错综句

      虚实错综句是指虚拟现象与客观事实错综交织在一起的句子，需要细心判断哪一处是虚拟语气，哪一处应使用陈述语气。

They might have left earlier, but the car wasn’t ready.

        A. can have left                     B.may have left  

        C. will have left                     D. might have left

      注：尊重原创文章,转载请注明出处和链接 https://www.pxwy.cn/news-id-19984.html 违者必究！部分文章来源于网络由培训无忧网编辑部人员整理发布,内容真实性请自行核实或联系我们，了解更多相关资讯请关注雅思考试频道查看更多，了解相关专业课程信息您可在线咨询也可免费申请试课。关注官方微信了解更多：150 3333 6050