【阿卡索高中英语知识分析】:虚拟语气用法有哪些

发布时间:2020-12-03 18:16:10 阅读数:
摘要:虚拟语气表示说话者做出的假设并非事实、表示难以实现的事情、表示主观愿望、表达某种强烈的感情。...

  虚拟语气表示说话者做出的假设并非事实、表示难以实现的事情、表示主观愿望、表达某种强烈的感情。

阿卡索,高中英语,虚拟语气用法

  虚拟语气的用法有:

  1. 对现在假设的情况,结构是:

  从句:

  If+主语+动词一般过去时(Be动词用were)。

  主句:

  主语+ should/would/might/could + do,例句:

  If I knew his telephone number, I would tell you.

  如果我知道他的电话号码,我就会告诉你。(事实:不知道)

  If there were no air or water, there would be no living things on the earth.

  如果没有水和空气,地球上就不会有生物。(事实:地球上既有空气也有水)

  2.对过去没做的事情的假设,实际还是没做,结构是:

  从句:

  If+主语+had + done,

  主句:

  主语+should/would/might/could + have done,例句:

  If I had got there earlier, I should/would have met her.

  如果我早到那儿,我就会见到她。(事实:去晚了)

  3.表示对将来可能性很小的事情的假设,结构是:

  从句:

  ①if+主语+were to do;

  ②if+主语+should + do;

  ③if+主语+动词一般过去式(be动词用were)。

  主句:

  主语+should/would/might/could + do,例句:

  If he should come here tomorrow, I would talk to him.

  如果他明天来这儿的话,我就跟他谈谈。(事实:来的可能性很小,不可能)

  If there were a heavy snow next Sunday, we would go skating.

  如果下周日下大雪,我们就去滑冰。(事实:下雪可能性很小,不可能)

  4.错综条件句:有时虚拟条件句中,如果主句和从句的谓语动作若不是同时发生时,虚拟语气的形式应作相应的调整。这种条件句叫错综条件句。

  ①从句的动作与过去事实相反,而主句的动作与正在发生的事实不符。

  例句:If I had worked hard at school, I would be an engineer now.

  如果我当时在学校学习刻苦的话,我现在就是一个工程师了

  ②从句的动作与现在事实相反,而主句的动作与过去事实不符。

  例:If he were free today, we would have sent him to Beijing.

  如果他今天有空的话,我们就已经派他去北京了。

  5.当从句的谓语动词含有were、should、had时,if可以省略, 这时从句要用倒装语序,即把were、should、had等词置于句首,这种多用于书面语。

  例句:Should he agree to go there, we would send him there.

  要是他答应去的话,我们就派他去了。

  6.非真实条件句中的条件从句有时不表达出来,只暗含在副词、介词短语、上下文或其他方式表示出来,这种句子叫做含蓄条件句。在多数情况下,条件会暗含在短语中,如without…、but for…(要不是因为...)等。

  例句:But for his help, we would be working now.

  要不是他的帮助,我们还会在工作呢。

  7.有时虚拟条件语气的从句中,主、从句可以省略其中的一个,来表示说话人的一种强烈的感情。

  ①省略从句

  例句:He would have finished it.

  他本该完成了。

  ②省略主句

  例句:If I were at home now.

  要是我现在在家里该多好啊。

  8.注意在虚拟语气的从句中, 动词be的过去时态一律用were,不用was。

  例句:If I were you, I would go to look for him.

  如果我是你,就会去找他。