1、高考英语语法专讲：介词一.概念: 介词表示它后面的名词或相当于名词的其他结构与句中其他成分的关系. 二.相关知识点精讲 1.表示地点位置的介词 1)at ,in, on, to at (1)表示在小地方; (2)表示“在附近，旁边” in (1)表示 在大地方; (2)表示“在范围之内”。 on 表示毗邻，接壤 to 表示在范围外，不强调是否接壤 He arrived at the station at ten. He is sitting at the desk. He arrived in Shanghai yesterday. Jiangsu lies in the east of Ch
2、ina. Russia lies on the north of China. Fujian is to the south of Jiangsu Province. 2)above, over, on 在上 above 指在上方,不强调是否垂直，与 below相对； over指垂直的上方,与under相对,但over与物体有一定的空间，不直接接触。 on表示某物体上面并与之接触。 The bird is flying above my head. There is a bridge over the river. He put his watch on the desk. 3)below,
3、under 在下面 under表示在正下方 below表示在下，不一定在正下方 There is a cat under the table. Please write your name below the line. 2.表示时间的介词 1)in , on，at 在时 in表示较长时间，如世纪、朝代、时代、年、季节、月及一般（非特指）的早、中、晚等。 如 in the 20th century, in the 1950s, in 1989, in summer, in January, in the morning, in the night, in ones life , in one
4、s thirties等。 on表示具体某一天及其早、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等。 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 mom
5、ent等。 注意：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。 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。 He studied the piano from the age of three. They have lived here since 1978.