Question

She might have come if she hadn't been so busy. 为什么不是if she wasn't so busy????

Answer 1

这是一个与过去事实相反的虚拟语气句。

你的句子意思是：She might have come if she hadn't been so busy. 假若她当时不那么忙的话，就有可能来的。

实际上是：She didn't come because she was so busy.

【规则】主句：主语+ would/could/might +have +pp   if从句：主语+had +pp.

 

 

 

Answer 2

因为主句是might have come，是说过去的事情：本可以来取没能来到，所以从句要用过去完成时。

Answer 3

She might have come if she hadn't been so busy.
== She didn't come because she was so busy

为什么不是if she wasn't so busy????-------因为它不能正确表达你的原始句。

Answer 4

虚拟语气的条件只能用过去完成

Answer 5

因为这个句子是虚拟语气：
表示与过去事实相反的情况
　　从句：If 主语+had+done
　　主句：主语+should/would/could/might+have done　

Answer 6

Why not?