in the night:
在夜間
at night 在夜間,在傍晚.一般可指整個夜間或午夜以前.如：
My mother asks me not to have the light on at night.我媽媽叫我不要夜里讓燈一直亮著.
Father often comes home from work at night.爸爸經(jīng)常午夜下班回家.
in the night 在夜間,在夜里（某個時候）.
I hear a cry for help in the night.夜里我聽到有人喊救命.
當這兩個詞組用作“在夜間”時,可以換用.如：
Thieves often come out in the night (at night).
He likes to work in the night（at night）.
如果表示“在傍晚”時,只能用at night或 in the evening,而不能用 in the night.
The school is over at seven in the evening.這個學(xué)校晚上七點放學(xué).