1、介词介词一般置于名词之前，不能单独充当句子成分。WangRui2020.1101时间介词（1）in、on 、at in：表示某一段时间，或早上，下午，晚上，也表一段时间之后（从现在算起的时间）on：表示在某一天,也表示在特定的上/下午 at：表示时间点in 1998in Octoberin the morningin 10 minuteson Fridayon Womens Dayon the afternoon of his arrivalat 12：00at noon at night at duskShe was born at 9：00，on May 10th，1988She was
2、born on May 10th，1988.She was born in 1988.（2）for 、from、since for：后接时间段，表示状态持续了多久 from：后接时间点，从.时候开始 since：后接时间点，表示状态从一开始一直持续，与完成时连用The game lasted for an hour.I played games from 8：00.I have played games since 8：00.Exercise 1 1.I will back _ 10 minutes.A.in B.on C.atD.for 2.He gets up _ 6：30 everyda
3、y.A.in B.on C.atD.for 3.The teacher is coming back_ an hour.A.after B.for C.in D.before 4.Miss Wang will come to Beijing_ two days.A.after B.in C.on D.beforeExercise 2 5.I lived there _ 20 years.A.inB.forC.sinceD.from 6.Mom read the book _ 5:00.A.inB.forC.sinceD.from 7.Beijing hold the Olympic Games
4、 _ 2008.A.inB.forC.sinceD.from 8.We have not seen him _ Sunday.A.to B.since C.past D.until（3）during 、till、until during:在.期间（强调持续）Many people suffered hardship during the war.till：直到.为止（用作肯定句）Ishallstayheretill/untiltwelveoclock.until：直到.才（用于否定句，通常用作not.until）Hedidntcomeuntillateinthemorning.Exercise
5、 3 1.She lived in the mountain village_ the years 1940-1950.A.between B.during C.in D.since 2.We stayed at the lab_ our teacher returned.A.till B.by C.during D.while 3 They didt leave the station_ they get on the train.A.until B.byC.after D.at(3)after 、before 、ago after:在.之后（过去时间为起点的一段时间之后）XiaoMing
6、wanted to play basketball after shool.before：在.之前（放在时间点之前）They will come back before six oclock ago：表示“.年以前”（放在时间段之后）His parents died ten years agoExercise 4 1.I shall go swimming _ 4 oclock this afternoon.A.agoB.afterC.before D.in 2.Please come to my office _ 9 oclock.A.agoB.afterC.before D.in 3.10
7、00 years _,people didnt know what is telephone.A.agoB.afterC.before D.in02方位介词单击此处添加文本具体内容（1）in、on、under、behind in表示在.内部 There is a toy in the box.on表示在物体的上表面 There are 2 apples on the bed.under表示在物体的下面 Two boys sit under the desk.behind表示在物体的后面 There is a tree behind the house.（2）over、through、past、
8、across over：从物体上方越过 He jumped over the wall.through：从物体内部穿过 The river runs through the city.past：从物体旁边经过 He walked past me without saying“hello”.across：从物体表面穿过 The little girl ran across the road.（3）in front of、in the front of in front of：在物体的前面（外部）I stand in front of the teaching building.in the fr
9、ont of：在物体的前面（物体内部）I stand in the front of the classroom.（4）between 、among between表示两者之间，常用“between A and B”结构，“在之间”。I sat down between Anna and Jack.among表示三者或三者以上，“在之间，在内部”，其所在范围内的人或事通常视为一个整体。He was happy to be among the classmates again.Exercise 5 1.He sits _ the Jack and Lily.A.between B.amongC.
10、in D.on 2.Xiao Ming sits _ the black board.A.in the front of B.amongC.in front of D.on 3.There is a book _ the desk.A.before B.passC.in D.on 4.We must ran _ the square.A.overB.throughC.acrossD.past 5.Go _ the bridge,you will find the park.A.overB.throughC.acrossD.past 6.Can you see it _ the hole?A.overB.throughC.acrossD.past 7.Our bus drove _ the Great Hall of the People.A.overB.throughC.acrossD.past 8.The horse jumped _ the fence.A.overB.throughC.acrossD.pastExercise 6Thanks.
