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《Grammar》PPT课件优质课下载
Sit down please.
虚拟语气：是一种特殊的动词形式，用来表示说话人所说的话不是一个事实，而是一种愿望、假设、猜测、怀疑、要求、命令等。
If I were you, I would work hard.
a. if真实条件句 表示条件是真的或有可能实现的, 采用陈述语气。
b. if虚拟条件句 表示条件是虚拟的或几乎无法实现的, 采用虚拟语气。
if 引导的虚拟条件句
①与现在事实相反
②与过去事实相反
③与将来事实可能相反
If I had a great deal of money now, I would buy a villa (别墅) for my parents.
与现在事实相反
If I were the schoolmaster of Zhaozhou No. 2 Senior School, I would let the students get up a little later to get a better sleep.
与现在事实相反
if虚拟条件句
主句
与现在事实相反的假设
If+主语+ 动词的过去式
（be动词一般用were)
主语+would ( should / might / could )＋动词原形
1. If I had a great deal of money now, I would buy a villa (别墅) for my parents.
2. If I were the schoolmaster of Zhaozhou No. 2 Senior school, I would let the students get up a little later to get a better sleep.
If Yao Jiaxin had driven more carefully, he would not have caused the car accident in May,2009.
与过去事实相反
If he had got up earlier , he could have caught the train.