2015中考最新英语知识巩固篇之时间介词
表示时间的介词： (1)in , on，at 在时 in表较长时间，世纪朝代时代、年、季节、月及一般(非特指)的早、中、晚 如：in the 20th century, in the 1950s, in 1989, in summer, in January, in the morning, in the night, in ones life , in ones thirties on表示具体某一天及某一天的早、中、晚。 如：on May 1st, on Monday, on New Years Day, on a cold night . in January, on a fine morning, on Sunday afternoon. at表示某一时刻或较短暂的时间，或泛指圣诞节，复活节等。 如: at 3:20, at this time of year, at the beginning of, at the end of , at the age of , at Christmas， at night, at noon, at this moment 在last, next, this, that, some, every 等词之前一律不用介词 如：We meet every day. (2)in, after 在之后 in +段时间表示将来的一段时间以后; after+段时间表示过去的一段时间以后; after+将来点时间表示将来的某一时刻以后。 例句：My mother will come back in three or four days. He arrived after five months. She will appear after five oclock this afternoon. (3)from, since 自从 from仅说明什么时候开始，不说明某动作或情况持续多久; since表示某动作或情况持续至说话时刻，通常与完成时连用。 例句：He studied the piano from the age of three. They have lived here since 1978. (4)after, behind 在之后 after主要用于表示时间; behind主要用于表示位置。 例句：We shall leave after lunch. Lucy is hiding behind an old house.