Monncakes are in the shape of a full moon on the mid autumn night.用on还是in
问题描述：
Monncakes are in the shape of a full moon on the mid autumn night.用on还是in
这是英语书的原句,但我仍然存在疑问.如果不是用at请说明原因.
答
是应该用on.
如果没有修饰成分,通常说in the morning/ afternoon/ evening,或者at night
但是如果morning等词前面有修饰成分,即特指的某个早晨、下午或晚上等,通常用介词on.如.：on the morning of July 2； on Sunday afternoon； on a cold winter evening等.