考研英语中“which”用法辨析

在考研英语中，which是一个十分重要的疑问代词，而与它相关的考点也多种多样。为此，北外网课（北京外国语大学网络课程）的老师也整理一些关于which的用法辨析，一起来看看吧。

1.as 与which用作关系代词的区别

As多与the same, such, so,as等关联使用。

如： As the forest goes, so goes its animal life.  

另外，虽然as和which都可以引导非限定性定语从句，但as在句中的位置比较灵活，可出现在句首、句中、句末，而which只能出现在句末，尤其是当先行词是整句时。常见的这类结构有： as has been said before, as has been mentioned above, as can beimagined, as is known to all, as has been announced, as can be seen from thesefigures, as might/could be expected, as is often the case, as has been pointedout, as often happens, as will be shown等。  

2. 关系代词that与which用于引导定语从句的区别  

如果关系代词在从句中做宾语，用that, which都可以，而且可以省略；

先行词是不定代词anything, nothing, little, all, everything时，关系代词用that，先行词由形容词**级或序数词修饰或由next，last, only, very修饰时，用that；

非限定性定语从句只能用which引导；