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1、介词的用法 介词的种类：简单介词，只是一个单词。如：in ,on ,after 等。短语介词 ，是由两个以上集合而成。out of , in front of, because of, instead of.介词短语可以作定语，状语，表语。如：The book on the desk is mine. A gentlemen in white came into the hall.注意：形容词作定语放在名词前，介词短语作定语放在后。如：an interesting book , a book on the desk,表示时间的介词1.表示年、月、日、时刻等用at, in, on2.表示时间的前
2、后用before, after3.表示期限等用until, till, by4.表示期间等用for, during, through5.表示时间的起点等用from, since6.表示时间的经过等用in, withinat 用于表示时刻、时间的某一点。at six oclock , at lunch , at noon , at nightat first , at last , at that time , at the moment,at the same time , at the end of 2000注意：当表示时间的名词前有this, last, next, every时不加介词。
3、on 用于表示指具体某一天、某一天的上、下午。on Monday, on Tuesday morning, on June 6, on that day, on May 4, 1996, on time, on the night of July 1st ,on a cold nightin 用于表示周、月、季节、年和泛指的上、下午、晚上 如：,如：in the week, in May, 2000, in spring, in 1998, in the morning, in time, in an hour, in a minute before, after (介、连）如：before
4、dinner , after school (介)Wash your hands before dinner.He runs after school.He will call me before he leaves here . （连词） ago 副词. 放在时间后，表过去。 two hours ago如：We left there two hours ago.,until / till (介、连）两词可通用。如：until nine o,clock by 截止到. 如：by then , by the end of for 达.之久 （经过多少时间）如：for 20 yearsduring
5、 在期间 如：during the summer holidaysthrough 一直 （从开始到结束）如：through the night, through the winterfrom to. 从到 如：from eight to tensince 自从以来 如：since yesterday, since 2003in 过后（将来时）如：in five hours, in a week,表示场所、方向的介词at 在某地点（狭窄的场所）如：at school, at home, at a factory , at the party at work, at the bus stopin
6、在某地 （宽敞的场所）如：in Beijing, in China，in the world, in the the street, in bed, in the middle, in the house, in hospital (住院), in the hospital(探望病人、在医院工作)near 近的、不远near=not far 如： Is there a bus stop near here?by 在旁边、比near要近 by the window,in front of 在的前面 如：There is a tree in front of the house. in the f
7、ront of 在的前部 如;There is a big desk for the teacher in the front of the classroom.behind 在后面 , behind 是in front of 的反义词。 如: There are trees behind my house. There is a tree at the back of my house.on 在上面，有接触面。如：on the desk, on the wall 在靠近.的地方 如：on the right, on the river, on the floor, on the farm,
8、on the island,above 在上方 如：above the cloudsover 在 正上方，是 under 的反义词。如：There is a light over Li Ming.under 在下面、在之内 。如：under the table below 在下方（不一定是正下方）,above,below,on,on,on,under,over,between 在两者之间 betweenand如：My teacher is sitting between Tom and Mike.Whats the difference between A and B?among 在三者或更多
9、之中 如：He is very popular among the students.around 环绕、在周围、在四周 如：We sat around the table. The earth moves around the sun.,among,between,around,in 在之内，用于表示静止的位置The students are in the classroom.into 进入, 用于表示有特定终点的运动的方向。通常用于表示动作的动词之后。如：go, come, walk, run 等。The students run into the classroom.He jumped
10、into the water.out of 和into一样，也表示有一定的运动方向The students rushed out of the room.,into,in,out of,along 沿着 I was walking along the river when it began to rain.across 横过 I often swim across the river.past 经过 The hospital is a kilometer past the post office.through 贯穿，通过 The river was through the city.,acr
11、oss,along,through,to 到达地点（目的地）或方向He came to Japan in 1980.Tom has gone to school.for 表示目的地，（固定词组）“向” Ill leave for America next week.from 从地点起Its about ten minutes walk from here to the cinema.How far is it from our school to the hospital?,Wait forBorrowfromHear of Buy forHelp sb. with sth.Pay forGo out for a walk Lend to,Arrive in / at turn on On duty something wrong with Turn off be famous forFor two days be worried aboutOn the morning of July 9With my own eyesInstead of,
