您当前所在位置:首页 > 高中 > 高中英语学习 > 英语语法

高中英语语法:动词的语气

来源:互联网 编辑:sx_haohm

2011-07-12

【编者按】精品学习网为您整理了高中英语语法,希望对广大考生朋友学习英语有一定的帮助!

动词的语气

一.概念

语气有三种:陈述语气,祈使语气和虚拟语气.语气表示说话人对劝词所示示的动作或所处的状态持有的态度或看法.

二.相关知识点精讲

1.辨别if 引导真实条件句和if引导的虚拟条件句的区别

If he has time, he will go with us.= Probably he has time and will go with us.

If he had time, he would go with us.=But in fact he has no time.

2.虚拟条件句中主句和从句的谓与动词构成形式如下表

 

if条件句中的谓与动词

主句的谓与动词

与现在的事实相反

 

1. 行为动词用did 形式

2. be动词用were

should

would

could   + 动词原形

might

与过去的事实相反

 

had + done

should

would

could   + have + done

might

与将来的事实相反

1. 行为动词用did

2. should + 动词原形

3. were to + 动词原形

should

would

could   + 动词原形

might

3.混合时间的虚拟语气

如果条件句中的动作和主句的动作不是同时发生,主句和从句的谓语动词的形式应分别根据各自所表示的时间加以调整。

1)0If I had received the passport yesterday, I would start today.

2)If he had telephoned me last night, I would see him now.

3)If he had followed the doctor’s advice, he would be all right now.

4)If China had not been liberated, the working people would still be leading a miserable life.

4.should/ could / might/ ought to + have done 表示“过去本应该/可以做而实际上却没做”

needn’t have done 表示“过去没必要作而实际上做了”

5.虚拟语气中的倒装句

如果虚拟语气的条件从句谓语动词中含有were, had, could, should,有时可将if省去,而将条件从句的主语置于were, had, should, could 之后。

Had you invited us, we would have come to your party.

Were I you, I would do more practice after class.

Could she lend us a helping hand, she would do so.


相关推荐:
最新高中英语语法大全
高中英语语法强化练习小结
高中英语必须掌握的十个语法概念
高中英语宾语从句讲解宾语四个要点

标签:英语语法

免责声明

精品学习网(51edu.com)在建设过程中引用了互联网上的一些信息资源并对有明确来源的信息注明了出处,版权归原作者及原网站所有,如果您对本站信息资源版权的归属问题存有异议,请您致信qinquan#51edu.com(将#换成@),我们会立即做出答复并及时解决。如果您认为本站有侵犯您权益的行为,请通知我们,我们一定根据实际情况及时处理。