英语中-if从句中的虚拟语气用法-经常用到的知识点！

每天坚持一点点，每天进步一点点。

1.If + were/did (动词的过去式)，主语+would/might/should/could+do…

用法

该句型常用于表示对现在的情况的假设。

1)If I were you, I would not be so proud.

如果我是你，我不会如此自负。

2)I don't have a cellphone. If I had one, it would be convenient for me to get in touch with others.

我没有手机， 如果有的话，和别人联系就方便多了。

3)If I were in your position, I would think better of it.

如果我处在你的位置，我会重新考虑的。

2.If +had done, 主语+would/might/should/could + have done…

该句型用于表示对过去或已经发生事情的虚拟假设。

1)What a pity it is that you didn't attend the concert yesterday! If you had attended the concert, you would have seen the famous singer.

真遗憾昨天你没有去听音乐会！如果你去了，就能见到那位著名歌手了。

2)Anyone in this position would have done the same. If anyone had been in his position, he would have done the same. 任何处在他位置的人都会这样做的。

3.If + were/did/were to do/ should do, 主语+ would/might/should/could +do…

该句型常用于表示对将来的假设。

1)If he should refuse (= if he were to refuse = if he refused), it did not matter at all.

万一他拒绝了，那也没关系。

2)If you should not pass the college entrance examination, what would you do?

万一高考考不过，你该怎么办？