高考英语语法专项：情态动词用于虚拟语气

英语语法是高中学习及考试的重点，也是构成整个英语学习体系的重要组成部分，所以英语语法的重要性不言而喻，但是有很多同学抱怨英语语法学习很艰难。今天考高分小编带着大家开始每日语法专项学习，攻克高中英语所有语法知识点，小伙伴们每天学一点，一起拿下高考英语语法，加油吧!

情态动词用于虚拟语气

部分情态动词的过去形式(could, might, should, would)，可以用于非真实条件句以及其他结构中表示虚拟语气。

1.表示想像或猜测

If I could speak French, I would teach you.如果我会说法语，我就能教你。(我不会，所以不能教你)

If you phoned him right now, you might get the matter ttled.如果你现在给他打电话，你就可以把问题解决了。

There could be something wrong with the tape recorder.这台录音机可能出毛病了。

He might have said so.他可能这样说过。

Could he have done such a foolish thing他会做这样的傻事吗?

2.表示委婉或客气

虚拟语气(could, would, might +动词原形)可使说话者的口气变得委婉客气。

You could answer this email for me.你可以替我回这个电子邮件。

Could you leave me your telephone number and address你能将电话号码和地址留给我吗?

Would you mind opening the window劳驾把窗子打开，好吗?

You might as well put off the discussion till next week.你们不妨把讨论推迟到下个星期。

比较：

would lide to do

愿意，想要

would lide to have done

本来想

I would like (to have) a word with you.我想和你谈一谈。(现在想)

I would like to have talked with you.我原本想和你谈一谈的。(没有谈成)

3.表示惋惜或责备

Given more time, we could have done better.如果给我们更多时间，我们能够干得更好些。(我们并没有得到更多的时间)

You could have got up a little earlier!你完全可以早点儿起来!(实际上没有早起)

It was cold yesterday. I should have worn a heavy coat.昨天很冷，我该穿件厚外套的。(但我没穿)

This wall shouldn't have been pained blue.这墙不应该漆成蓝色。(但已漆了)

提示：

当代英语一个显著的变化就是虚拟语气的使用越来越少，许多该用虚拟语气的地方都用陈述语气代替。

He suggested that I went to the hospital at once.他建议我们立刻去医院 We shall write down the address lest we forget.我们要把地址记下来，以免忘记 Imagine you are an astronaut.设想你是个宇航员

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