初中英语虚拟语气讲解及练习
英语中的语气分为陈述语气、祈使语气、虚拟语气三类。
虚拟语气表示说话人的主观愿望或假想，所说的是一个条件，不一定是事实，或与事实相反。 条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况，故采用虚拟语气。
如果假设的情况可能发生，是真实条件句，这种情况下谓语用陈述语气。如： If time permits, we'll go fishing together.如果时间允许，我们就一起去钓鱼。
如果假设的情况是不存在的或不大可能发生的，则是虚拟条件句。如： If you had come yesterday, you would have met that famous professor.如果你昨天来，你就会见到那位著名的教授了。
虚拟语气的基本形式和用法在含有虚拟条件句的复合句中，主从句的谓语都要用虚拟语气。 I. 含有条件状语从句的复合句
If I were you, I would give up drinking immediately.
If I were to see her tomorrow, I would tell her the truth.
If you went there next time, you would see what I mean.
注意事项：
1．倒装句。如果条件句中含有功能词had，should，were时，可以省去If，把功能词提前，构成倒装句。
2．错综条件句。若条件句和主句动作不存在同一个时间，则谓语形式应根据具体情况而定。If he had followed the doctor’s advice, he would be quite all right now.
If I were you, I would have gone home.
3．If there weren't/had not been +…=without…
4．If it were not for…/ If it hadn't been for…= but for…
5．otherwise+虚拟语气的句子
II. 虚拟语气用在宾语从句中
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