题目内容：

i'm going to meet my uncle and aunt at the airport___Sunday afternoon.
为什么正确答案是A?不用加介词?
A.this B.on this C.in D.on next

优质解答

i'm going to meet my uncle and aunt at the airport___Sunday afternoon.
this Sunday afternoon（这个周日下午）,时间副词.不与任何介词连用,同时与过去时连用.
相似的时间副词用法还有THIS/THAT/LAST DAY/EVENING/MORNING/AFTERNOON/YEAR等.