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混合条件句

作者: admin来源: 网络文章 时间: 2013-02-24

 主句与从句的动作发生在不同的时间,这时主,从句谓语动词虚拟语气形式因时间不同而不同,这叫做混合条件句。
If you had asked him yesterday, you would 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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