What is the attributive clause?(什么是定语从句?)

问题描述:

What is the attributive clause?(什么是定语从句?)

先行词:物或人 关系代词---人+who/whom/whose/that 物+which/that/whose
宾语从句:先行词+关系代词/关系副词+从句
比如:The student whom we saw just now is the best runner in our school.
先行词 关系代词