1. 首先关系词分为两种,
关系代词和关系副词,关系代词有which,that,who,whom,whose,as;关系副词有when,where,why,as。
2. 其次,关系代词与关系副词的区别。关系代词在
定语从句中作主语,宾语等,去掉关系代词所作成分,定语从句不是一个句子。例This is the thing that Iwant to do yesterday.若去掉that,"I want to do yesterday"缺少宾语,不是一个完整的句子;关系副词在定语从句中作状语,去掉关系副词,定语从句是一个句子。例It is the place where we grow up.若去掉where,"we grow up"仍然在语法上是一个完整的句子。
3. where,when只能在定语从句中作状语,that,which能在定语从句中作主语,宾语等,但不能作状语。