关系代词和关系副词分别有什么作用啊？

关系代词
关系代词是一种引导从句并起连接主句和从句作用的代词。关系代词有 who, whose, whom, that, which. 它们在句中可用作主语,表语,宾语,定语. 在主句中,它们还代表着从句所修饰的那个名词或代词。例如：
I hate people who talk much but do little.
I’m looking at the photograph which you sent me with your letter.
With the money that he had saved, he went on with his studies.
Do you know the lady who is interviewing our headmaster?

关系副词，
在句子中做状语，高中常见的就是，where ,when如：
地点状语： My father works in the factory where we visited in last month.
时间状语： I still remember the time when my mother told me the news.

其他的还有方式状语，让步状语，原因状语。他们在句子中相当于一个副词用。
关系代词 指代作用 和关系副词不指代，句子不缺成分，只做状语用。

相信你已经明白，希望对你有用。

关系代词(that, who, whom, whose, which)所代替的先行词是人或物的名词或代词，并在句中充当主语、宾语、定语等成分。
关系副词(when, where, why, that)可代替的先行词是时间、地点或理由的名词，在从句中作状语。关系副词when, where, why的含义相当于"介词+ which"结构，因此常常和"介词+ which"结构交替使用。