虚拟语气表示一种不能实现的假设。该语法主要用于 if 条件状语从句。也可用于主语从句、表语从句、宾语从句等。只有在只有在非真实条件句非真实条件句中才使用虚拟语气中才使用虚拟语气 .通常有三种情况：通常有三种情况：①① 与与过去过去事实相反。事实相反。②② 与与现在现在事实相反。事实相反。③③ 与与将来将来事实可能相反。 事实可能相反。 虚拟语气虚拟语气 条件从句条件从句的谓语形式主语的谓语形式与过去相反If I (you, he/she, they, we )+had + 过去分词should/would/could/might+have+ 过去分词例：例：If I had come her yesterday, I would have seen him.If I had come her yesterday, I would have seen him. If you had got up earlier, you could have caught theIf you had got up earlier, you could have caught the train. train. 如果你早一点起床，就会赶上火车的。 如果你早一点起床，就会赶上火车的。 与过去相反与过去相反 If they If they had studied hardhad studied hard, they , they could have donecould have done it it easily that day. easily that day. 1.1. 如果他们以前努力学习的话，那天干的就会容易些。如果他们以前努力学习的话，那天干的就会容易些。2. 如果他不听取我的建议，他就不会干得这样好。 If he If he had not takenhad not taken my advice, he my advice, he wouldn‘t have wouldn‘t have donedone it much better like this. it much better like this. If I ____________time last night, I _____________ to see the film with you .had hadhad hadwould have gonewould have gone If he more carefully, he the car accident yesterday.had drivenhad driven would not have hadwould not have had If I how to swim,If I how to swim, I I trapped in this island.trapped in this island.had learnthad learnt would not have beenwould not have been If the staff If the staff had beenhad been more careful,more careful, the mall the mall would would not benot be on fire now. on fire now.主句与从句的动作发生在不同的时间 , ...
