介词一．定义。
介词是英语中很活跃的词，一般置于名词之前。
它常和名词或名词性词语构成介词短语。
同一个介词常和不同的词语搭配形成固定搭配，表示不同意义。
二．分类介词按结构大致分为以下三类：1.简单介词（Simple Prepositions）如：about，at，by，under，of，over..2.符合介词（Compound Prepositions）如：inside，into，outside，without3.短语介词（Phrasal Prepositions）如：in front of，because of，according to，三．用法at①表示时刻：I go to school at seven every day 我每天早上7点去上学。
②表示在某一具体地点（小地点）：He is standing at the bus stop 他站在公共汽车站。
③表示动作的方向、目标：Let me have a look at the picture 让我看看这幅图。
④用于某些固定搭配：at once 立刻、马上at last 最后at the same time 同时at first 开始时not at all 一点也不about①表示大约时间：It’s about six o'clock now. 现在大约6点钟了。
②表示地点；在……周围：Everything about me is so beautiful 我周围的一切都那么美好。
③关于，对于：We are talking about the news. 我们正在谈论新闻。
④用于某些固定搭配：talk about 谈论think about考虑what/how about 怎么样after①在……之后：After dinner I watch TV. 晚饭后我看电视。
②在……后面：He came into the room after me. 他在我后面进了房间。
behind①在……之后：There is a bike behind the tree. 树后有一辆自行车②比……晚，迟于：The train is behind time. 火车晚点了by①在……旁：He is sitting by the bed. 他正坐在床边。
②到……时候：We have learned three English songs by now. 到现在为止，我们已经学会了三首英文歌曲。
③以……方式：I go to school by bus. 我乘公共汽车去上学。
④用于某些固定搭配：one by one 一个接一个by the way 顺便说一句for①为，给，替：I'll make a card for my teacher. 我要给老师做张卡片。
②由于：Thank you for helping me. 谢谢你帮我。
③表示给（某人）用的：There is letter for you. 这儿有你一封信。
④用于某些固定搭配：be good for 对.....有好处be bad for 对....有害Thank you for......感谢be late for 迟到look for 寻找in①在……里面：The pencil is in the desk. 铅笔在课桌里。
②在一段时间里：We have four classes in the morning. 我们上午有四节课。
③用，以：What's this in English? 这用英语怎么说？④在某一年份，季节，月份：in 2002, in spring, in January⑤表示状态，服饰：Helen is in yellow. 海伦身穿黄色衣服。
⑥在……方面：He is weak in English. 他的英语不行。
⑦用于某些固定搭配：in front of 在……前面in the end 最后in time 及时in bed 卧床in the sun 阳光下in class 课上in English用英语like①像……样：He looks like his father. 他像他的父亲。
②这样，那样：Don't look at me like that. 别那样看着我。
③怎样：What's the weather like? 天气怎样。
④用于某些固定搭配：look like 看起来像sound like听起来像near靠近，在……附近：My bed is near the window. 我的床在窗户旁。
of①的（表示所属关系）：This is a photo of my family. 这是一张我家的照片。
②……的（用于所有格）：He is a friend of mine. 他是我的一个朋友。
③表示数量（与连词连用）：One of us is from Beijing. 我们中有一个来自北京④想到，谈到：I often think of them. 我常常想到他们。
⑤用于某些固定搭配：of course 当然because of 因为，由于on①在……上面：There are some apple on the tree. 树上有些苹果。
②在（星期）天，在某天的上午（下午，晚上）：They go to English class on Sunday. 星期天他们去上英语课。
I left Beijing on the morning of May 1. 我在5月1日早上离开北京。
③用于某些固定搭配：on duty 值日on time 准时over①在……正上方：There is a lamp over the table. 桌子上方有一盏灯。
②遍及，穿过：There is a bridge over the river. 有座桥横跨那条河。
③超过，不止：She is a little over 2. 她两岁多了。
to①到，往，向：He walks to the window. 他走向窗户。
②表示时间、数量，到……为止Please count from ten to thirty. 请从10数到30.③向，对，给：Happy New Year to you all. 大家新年好。
④用于某些固定搭配：from....to....从.....到..... too....to....太.....不能.....underWhat's under your desk? 你书桌底下是什么？with①和：Could you go home with me? 你能和我一起回家吗？②表示伴随状态，带有：Who's that girl with glasses? 那位戴眼睛的女孩是谁？三、介词的固定搭配1)介词和名词的连用2)动词和介词的连用3)形容词和介词连用atarrive at/in 到达=get to=reachat first 起初；开始at dinner 在吃晚饭at last 最后at night 在深夜at school 在上学at home 在家；无拘束laugh at 嘲笑at present 现在at work 上班，在工作look at 看....be good at 擅长..... at once立刻onget off/on 上/下车on one’s way home 在我回家路上on duty 值日turn on/off 打开/关掉on holiday 度假on time 准时on the left/right 在左/右边on the radio 在广播中on foot 步行on sale 出售；降价出售put on 穿上on the farm 在农场on TV 在电视上播放on the phone 在电话中inbe interested in 对……感兴趣in class 在课堂上in English 用英语in bed 卧床in hospital 住院in the middle 在中间in the day 在白天do well in 擅长in the sun 在阳光下forwait for 等待be late for 在look for 寻找Thank you for 感谢be good/bad for 对.....有益/有害what’s for lunch? 午饭吃什么？withhelp sb. with sth. 帮助某人...... be busy with 忙于......see with our eyes 用眼睛看write with a pen 用钢笔写be strict with 对.....要求严格talk with 和....谈论4）其他look like 看起来象...... hear from 收到....来信learn from 向.....学习turn up/down 调大/小音量listen to 听...... get up 起床too.....to....太....不能....实战演练一．选择填空，并把其字母编号写在括号内。
( ) 1. It’s time ______ supper.A. atB. inC. onD. for( ) 2. It’s no time ______ school. It’s time ______ go back home.A. to, forB. to, toC. for, to( ) 3. Mr Brown comes ______ America.A. atB. fromC. inD. to( ) 4. What’s this _____ English?A. inB. atC. onD. under( ) 5. Sometimes I go to school _____ foot.A. byB. inC. onD. with( ) 6. Count （数）_____ one _____ ten.A. from, byB. from, toC. to, toD. at, to( ) 7.My sister is looking ____ her new shoes now.A. atB. afterC. forD. to( ) 8. It’s cold outside. Please _____ your warm clothes.A. put inB. take offC. put onD. put up( ) 9. The classroom is quite different _____ that one.A. ofB. fromC. withD. like( ) 10. A: Do many children in our class often skate ________ winter?B: Yes, they usually have fun _______ winter.A. in, inB. on, onC. at, at( ) 11. A: Does the autumn start _________ August?B; Sometimes it does. But usually it starts _______ September.A. in, inB. on, onC. at, at( ) 12. I usually play table tennis ________ school.A. afterB. whenC. by( )13. I like summer. Is it cool ______ autumn? What _______ summer? Oh, it is too hot.A. in, about onB. on, about onC. in, about in( ) 14. A: Do you listen to the radio _______ a long time?B: No, I often listen to it ______________ twenty minutes.A. for, toB. for, forC. to, for( ) 15. When is May Day? It’s _______ the first of May.A. onB. inC. at( ) 16. They will move to the new school ______ next Monday.A. onB. inC. /( ) 17. He always goes to school at 7:00 ______ every day.A. onB. inC. /( ) 18. She does her homework ______ half an hour every day.A. inB. forC. /二、用所给的介词填空。