您现在的位置:主页 > 虚拟语气 > 文章内容

非真实条件句

作者: admin来源: 网络文章 时间: 2013-02-24

1)时态:可以表示过去,现在和将来的情况。它的基本特点是时态退后。
a. 同现在事实相反的假设。
句型 : 条件从句     主句
一般过去时   should( would) +动词原形
If they were here, they would help you.


b. 表示于过去事实相反的假设。
句型: 条件从句      主句     
过去完成时    should(would) have+ 过去分词
If she had worked harder, she would have succeeded.  
The rice would not have been burnt if you had been more careful. 
If my lawyer had been here last Saturday, he would have prevented me from going.

  If he had come yesterday, I should / would have told him about it.
含义:He did not come yesterday, so I did not tell him about it.
If he had not been ill and missed many classes, he would have made greater progress.
含义: He was ill and missed many lessons, so he did not make greater progress. 


c.表示对将来的假想
句型:  条件从句       主句
一般过去时      should+ 动词原形
were+ 不定式     would + 动词原形
should+ 动词原形
If you succeeded, everything would be all right.
If you should succeed, everything would be all right.
If you were to succeed, everything would be all right.

 

相关推荐

虚拟语气用在wish后的宾语从句中,(常常省去连词that),表示不可能实现的愿望。 1.表示与现在事实相反的愿望 构成: 主语 + wish (that) + 从句主语 + 动词过去式 (be 一律用were) 例如: I...[阅读全文]

It is (high) time that 后面的从句谓语动词要用过去式或用should加动词原形,但should不可省略。 It is time that the children went to bed. It is high time that the children should go to...[阅读全文]

上一篇:真实条件句 下一篇:混合条件句