核心介词用法归纳与辨析 （1）表示时间的介词in 的用法如下。 表示在某一较长时间内，如世纪、年、月、季、周等一般用介词in， 如：in the 1990s, in the year, in January, in(the) winter / summer / fall / spring, in the first week of May。 还可以用时段名词组成固定短语或词组。如：in a while, in no time, in the daytime, in a short while, in time, in the morning (afternoon, evening)。但要注意： ①at night / at noon, in the day(在白天),in the night（大夜间）。 ②in five days（weeks, months, years）中 in 意思是“在……以后”。 ③in 和 during 表一段时间内两词可互用。如：in the night, during the night, in the war, during the war。但略有区别：当接表示“活动”的抽象名词时多用during，接“活动”的动名词及短语时用in。如： during the discussion in discussing the problem during her stay in Hubei in playing basketball during the course of in digging the tunnel （2）在具体的某一天或某天上午、晚上、前夕，常用on。 on Sunday(s).on Tuesday morning on Christmas Day(但at Chrismas),on Christmas Eve, on Children’s Day on March 8, on the morning (afternoon, evening)of Oct.1 early on the morning of Oct.1(区别：in the late / early morning of Oct.1) on a rainy night, on warm winter days (3)表示某一时刻或某一点时间用at,如小时、分钟等。 at breakfast(supper, lunch),at six at noon (sunrise, sunset, midday, night, midnight, dawn) at the age of 15, at the time of war,但in time of danger/ trouble。 注意：有些时间名词前不接介词。如： next day、last Sunday、that morning、these years one、each、any、every、some、all 修饰时,一般不用介词,如some day one day、yesterday / afternoon,the night before （4）till、until、to 的用法。 ①till(until)与持续动词连用一般用于肯定句中，与短暂动词连用一般用在否定句中。如： He waited for me till twelve o’clock. He didn’t get up till(until) 10 a.m.(不可用to). 但注意：在句首出现...
