问题补充:
Ill never forget the day I bought my own guitar with my own money.
A. where
B. on which
C. on when
D. that
答案:
A. where
(答案→)B. on which
C. on when
D. that
解析:通过分析句子结构,可知这个句子中包含一个定语从句,“介词+关系代词” 有时候相当于对应的关系副词,这里on which=when,其中介词的确定是依据先行词的某种习惯搭配确定,故选B。