Question

关于虚拟语气问题

说虚拟语气 是倒退一个时态 这应该怎么理解？谢谢

Answer 1

时态倒退，可参考以下例子
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/could/might+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/could/might 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/were+ 不定式/should+ 动词原形 should/would/could/might+ 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.

Answer 2

就是为了区别而已，这个没有为什么的。

Answer 3

主句现在时，从句过去时；主句将来时，从句现在时；主句过去将来时，从句过去时

Answer 4

英语是人家长期形成的一种语言方式，你人要记住是倒退一个时态就可以了。