【简明语法】16.3 混合条件句

时间：2005-10-05 16:00:00

（单词翻译:单击）

　主句与从句的动作发生在不同的时间，这时主，从句谓语动词的虚拟语气形式因时间不同而不同，这叫做混合条件句。
　　If you had¹ asked him yesterday, you would² know what to do now.
　（从句与过去事实相反，主句与现在事实相反。）
　　If it had rained last night (过去), it would be very cold today (现在).

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1 had
vbl.have的过去式和过去分词；conj.有
参考例句：
I just had a good idea!我有个好主意！ The boy had a small branch of a tree in his hand.这个男孩手上拿一条小树枝。

2 would
aux.will的过去式；愿，要；常常；大概；将要，会
参考例句：
Why would you say that?为什么你会这么说？ Would you please help me?你能帮帮我吗？