关系代词代替宾语时可省
关系代词不可省略
四、关系代词as和which的区别
先研究下面两个例句:
1. This elephant is like a snake, as /which everybody can see. =As everybody can see, this elephant is like a snake.
2. Tom didn’t pass the physics exam, which made his parents very angry.
这两个例句中,as和which所代表的都是整个主句所表示的内容。但有两点不同之处:
四、关系代词as和which的区别
1. 在形式上,as引导的非限制性定语从句可位于主句的后面,也可位于主句的前面;而which引导的非限制性定语从句只能位于主句的后面,不能位于主句的前面。
2. 在意义上,as引导的定语从句和主句的关系一般为一致关系,常译为“正如······,就像······”;而which引导的定语从句和主句的关系是因果关系,或which引导的定语从句是对主句的评论。因此,在意思通顺的情况下, which可代替as,而as许多时候不能代替which,如第2句。再如:
四、关系代词as和which的区别
He was late again, as/which we had expected. =As we had expected, he was late again.
The street hasn’t been cleared for weeks, which makes it very dirty.(不用as)
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