who和as引导定语从句的区别

Question

如题所述

Answer 1

一、关系代词who
who表示“……的(人)”,在定语从句中作主语,不能省略,所引导的定语从句一般修饰指人的名词或代词,在口语或非正式语言中,可作定语从句中的宾语,相当于whom,可省略.
These are the workers(who/whom) he employs. 这些是他雇佣的工人.
This is Uncle Li who mended computers for us. 这就是为我们修电
二、as既可指人,也可指物,常在限制性定语从句中充当主、宾、表语.as引导的定语从句的先行词前面常有as ／such ／the same等修饰词.例如： ①He is as brave a man as ever lived．他是世界上最勇敢的人. ②Don’t read such books as are not worth reading．不要读那些不值得读的书. as作关系代词,还可用来引导非限制性定语从句,as引导的定语从句可放在句首、句中或句末.例如： ① Taiwan,as we all know,is an inseparable part of China． ②As we all know,Taiwan is an inseparable part of China． ③Taiwan is an inseparable part of China, as we all know．