英语：定语从句中的关系代词和关系副词的区别

-关系代词和关系副词的差别主要看先行词在从句中作何成分.
也就是那个被修饰的名词或代词.
The student (who answered the question) was John.
student在从句中作主语,所以可用代词who来做关系代词
The hotel (where we stayed) during our holidays stands by the seaside.
hotel在从句中应该是作地点状语,是we stayed at the hotel.
这个句子同时也能被写成：
The hotel (which/that we stayed at) during our holidays stands by the seaside.
这个时候从句有主语we,有谓语stayed at,独缺宾语hotel,所以要用关系代词which或that

定语从句关系词的确定关键在于分析从句的句子成分，从句缺主语，宾语。要用关系代词，不缺（主语，宾语即作状语）则考虑用关系副词。
一般学生判断错误的原因是先看了先行词。

关系词有两种：关系代词和关系副词
关系代词在从句中主要作主语，宾语，而关系副词主要作状语，使用的时候首先要判断所选择的关系词在从句中要做的成分，找准了，再在关系代词或关系副词中再出适合的关系代词或关系副词