题目内容：

you enjoy the days___ you spent in Beijing during the Mid-Autumn Festival?填that?结构?

优质解答

that 或者是which
后面是定语从句修饰前面的days
sb spend some time in...
所以这里是宾语

追问：

when呢？

追答：

time是作为spend的宾语，不用使用when，when是当做状语时使用，相当于in which