Question

---What time is it? ---It's 10 pm. ______you can't go out. A.In the evening B.At night

答案选B，为什么不选A？

Answer 1

in the evening 是傍晚，大约六点钟以后到九点之间
at night 是晚上，晚上十点到第二天早上六点之间

Answer 2

习惯用法咯。at night 一般不用在句作状语

Answer 3

因为第一个大多数位于句末.....而第二个放中间可做为转折...