也可以改,但兩者有一定的區(qū)別：
at night 的意思是 during any night,通常表泛指.如：
I often work at night.我經(jīng)常在夜間工作.
He’s afraid to go out alone at night.他害怕夜晚獨(dú)自出去.
It’s becoming dangerous to go out alone at night.夜間獨(dú)自外出已經(jīng)越來(lái)越危險(xiǎn)了.
Please ensure that all the lights are switched off at night.夜間請(qǐng)務(wù)必將所有的燈關(guān)掉.
在非正式文體中,有還可用復(fù)數(shù)名詞不加介詞來(lái)指反復(fù)進(jìn)行的活動(dòng).
Would you rather work nights or days?你愿意上夜班還是上白班?
in the night的意思是 during one particular night,通常表特指.如：
The storm blew over in the night.風(fēng)暴在夜里停止了.
I had to get up in the night.那天夜里我非起來(lái)不可.
The temperature fell sharply in the night.那天夜間溫度急劇下降.
I’m exhausted.The baby woke up three times in the night.我累壞了,孩子夜里醒了三次.
這一含義有時(shí)可用 during the night 來(lái)表示.如：
Everything was quiet during the night.昨夜萬(wàn)籟俱寂.