请问这个定语从句which做什么成分?The two things about which Marx was not sure were the grammar and some of the idioms.请问能写成这样吗?The two things Marx was not sure which【移到这里】were the grammar and some of the idioms.

问题描述:

请问这个定语从句which做什么成分?
The two things about which Marx was not sure were the grammar and some of the idioms.
请问能写成这样吗?
The two things Marx was not sure which【移到这里】were the grammar and some of the idioms.

不能。
首先,这是个主语从句,about前置,也可用that,可以省略。
可以改成
The two things Marx was not sure about were the ...

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分词短语是同位语,which 是 sure的宾语

关系代词which是充当介词about的宾语,它指代the two things,也就是说the two things是定语从句的先行词.不能按你那样的写.可以写成:The two things Marx was not sure about were the grammar and some of the idio...