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.
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.