一、概念: 介词是一种用来表示词与词, 词与句之间的关系的词在句中不能单独作句子成分介词后面一般有名词代词或相当于名词的其他词类，短语或从句作它的宾语介词和它的宾语构成介词词组，在句中作状语，表语，补语或介词宾语并且在定语从句“介词+whom/which”的结构中，不能用that 代替whom/whichShe is a good student from whom we should learn. 介词分为时间介词.地点位置方向介词.方式介词.原因介词和其他介词 二.相关知识点精讲 介词口诀：自从以当为按照，由于对于为了到；和跟把比在关于，除了同对向往朝；用在名词代词前，修饰动形要记牢 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，“在……上面” to 表示在……范围外，不强调是否接壤；或“到……” 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, 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. 4)in front [frant]of, in the front of在……前面 in front of…意思是“在……前面”，指甲物在乙物之前，两者互不包括；其反义词是behind（在……的后面） There are some flowers in front of the house.(房子前面有些花卉) in the front of 意思是“在…..的前部”，即甲物在乙物的内部.反义词是at the back of…（在……范围内的后部） There is a blackboard in the front of our classroom. 我们的教室前边有一块黑板。
Our teacher stands in the front of the classroom. 我们的老师站在教室前.(老师在教室里) 5）beside，behind beside 表示在……旁边 behind 表示在……后面 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 one’s life , in one’s thirties等 on表示具体某一天及其早、中、晚 如on May 1st, on Monday, on New Year’s 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 moment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 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 4)after, behind 在……之后 after主要用于表示时间； behind主要用于表示位置 时间名词前介词用法口诀 年前周前要用in 具体日子却要禁 遇到几号要用on 上午下午又是in 要说某日上下午 用on换in记清楚 午夜黄昏用at 黎明用它也不错 at用在时分前 说“差”可要用上to 说"过''要用past 3.表运动方向的介词： across, through 通过，穿过 across表示横过,即从物体表面通过，与on有关； through穿过,即从物体内部穿过，与in有关。
4.表示“在……之间”的介词： between, among between指在两个人或两个事物之间； among指在三个或三个以上的人或事物之间 5.表示其他意义的介词 1)on ,about 关于 on 表示这本书，这篇文章或演说是严肃的，或学术性的，可供专门研究这一问题的人阅读； about表示内容较为普通，不那么正式 2)by, with, in 表示方法、手段、工具 by 以……方法、手段或泛指某种交通工具； with 表示用 …工具、手段，一般接具体的工具和手段； in 表示用…方式，用…语言(语调、笔墨、颜色)等； 3)except, besides 除了 except 除……之外，不包括在内； besides 除……之外，包括在内 Except Mr. Wang, we went to see the film.(王先生没去) Besides Mr. Wang, we also wentting to see the film.(王先生也去了) 三.巩固练习 1. Taiwan is _in_______ the southeast of China.（in, on, to） 2. Go ____on_____ the bridge ___to______ the river, you’ll find the shop.（across, through; over, above） 3. I go to school ______at____7:30 every morning.（in, on, at） 4. He would like to meet her ______at____8:00 and 9:00 tomorrow morning.（between, among ） 5. The Greens have lived in China _____for___ three years.（in, for, after） 6. We go to school every day ___on_____ Saturday and Sunday.（except, besides） 7. He wrote the letter _________ ink.（by, with ,in） 8. She returned to her country _____for____five years.（in, after, for） 9. There is a big tree _________ our classroom.（after, behind） 10. I usually go to work _________ bike.（by, on, with） 1. There’s something _______ her that I really don’t like. A. with B. forC. to D. about 2. I was angry _______ him for keeping me waiting. A. with B. toC. about D. on 3. _______ going to French evening classes twice a week she does yoga on Wednesdays. A. Because of B. ExceptC. Besides D. But for 4. _______ cooking, writing and running the farm, she was very busy. A. Among B. BetweenC. Over D. As 5. _______ one old lady, the bus was empty. A. Except B. Except forC. But D. Besides 6. They promise that the work would all be finished _______ next week. A. until B. inC. by D. to 7. We didn’t live together. We kept in touch _______ writing often. A. with B. ofC. on D. by 8. It was very kind of her. She insisted _______ her car to us. A. to lend B. lendingC. on lending D. in lending 9. We’ve talked a lot _______ cars. What about trains? A. of B. withC. about D. in 10. “How long have you been here?” “_______ the end of last month.” A. In B. ByC. At D. Since 11. The chemistry teacher required the students _______ more attention _______ the lab clean. A. to pay, to keep B. to paying, to keepingC. to pay, to keeping D. paying, keeping 12. “Is your car equal _______ hers in speed?” “No, mine is faster. But my old one equals _______ hers in speed.” A. to, to B. 不填, 不填C. to, 不填 D. 不填, to 13. This e。