I still remember the day when(on which) I first came to this school. 我仍然记得我第一次来到这所学校的那一天。 What's the name of the place where (at which) you spent your holiday last year? 去年你度假的那个地方叫什么名字？ The reason why he was late for class was that he got up late. 他迟到的原因是他起晚了。

一、基础点拨(一)关系副词引导的定语从句