帮忙造一个when引导的定语从句句子,如何判断此时先行词应该用when
问题描述：
帮忙造一个when引导的定语从句句子,如何判断此时先行词应该用when
答
I won't forget the days when I was in the summer camp.(时间在定语从句充当状语）
I won't forget the days that we spent together.(时间在这句句子当中是做spent 的宾语）