“介词+(the)night”辨

一、at night(表示在傍晚、晚上或夜里。) 1.6 o′clock at night 2.come home from work at night 3.keep a light on at night二、by night(表示在夜间或乘夜间,表示“在夜间”时.常和 by day连用,含有与白天相对的意思。) 4.The moon and stars give light by night. 5.We shall travel by night as well as by day. 6.In order to avoid the heavy traffic on the roads,some peopleprefer to travel by night.