from which等于什么？

Question

如题所述

Answer 1

from which是“介词+which=关系副词”这种形式来引导定语从句。例句：

The illness from which Mary is suffering has now been diagnosed as hepatitis.

这句话的主语是The illness from which Mary is suffering，主语里面有一个定语从句，which Mary is suffering from，从句里的主语是Mary， 从句谓语是is suffering from，从句的宾语是which。

from which的用法：

用法一：用于引导非限制性定语从句，在意义上相当于and from there（从那儿）。如：

He hid himself in a tree, from where he could see the enemy in the distance. 他躲在一棵树上，从那儿他可以看到远处的敌人。

用法二：可视为where前省略了the place，即这样用的from where 相当于from the place where，意思是“从……的地方”“离……的地方”。如：

From where I stood I could see everything clearly. 从我站的地方我一切都看得清清楚楚。