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1、介词和介词短语介词是虚词，根据意义可分为地点介词、时间介词、方位介词、手段介词和其他介词等。1表示时间的介词:at,in,on,before,to,from,by,till,until,after,for,since等。2表示地点，位置,方向的夕卜词：next,to,in,infrontof,on,outof,at,above,over,into,near,between,under,up,across,by,down,from,around,behind,beside等3表示原因，理由的介词：for,as,at,from等4表示方式的介词：on,in,by,with
2、等。常用介词辨析1.表示时间的in,on,at,after1)in的用法。用于早晨、F午、傍晚。Inthemorning/afternooii/evening用于月、年、季节等oInMarch,in1986,inspring用于一段时间后。Inaweek,inayear'stime,intwohours2)on的用法用于具体某一天。Onmybirthday,onthemomingofnextFriday,onJune6,onSunday,onNewYear'sDay用于描述性的时间。Onacoldnight,onawinterday3)at的用法用于具体的钟点。At1
3、2o'clock,athalfnine用于固定的搭配。Atlunch,atnight,atbreakfast,atnoon,atChristmas,atweekends,atthattime4)after表示在一点时间以示。Aftertwelveo'clock2.表示的地点的in,on,atbelowunderTherewillbetwobridgesovertherivei•.河上将有两朋桥。4•表方位的in,on,to.@oOooShanghaiisintheeastofChina.RussiaisontheeastofChina.Japanistotheeast
4、ofChina.5.between,amongBetween指两者之间,among指三者或三者以上。6・across，over，throughAcross表示从这一边到另一•边的横过,over表示从空间通过,through则表示从内部空间穿过。Canyouswimacrossthelake?你能游泳过湖吗？TheGreatWallwindsitswayfromwesttoeast,acrossthedesserts,overthemountains,throughthevalleys,tillatlastitreachesthesee・7.with,in，byWith
5、示跟工具,in示跟语言、材料等,by跟某种方式。Icanwritewithapen.我能用笔写。Hewrotethewordsinredink.Weoftengotoschoolbybike./1learnEnglishbylisteningtotapes.8.看似相同，但意义有别的词组。Atschool在上学Infrontof在…前边(外部)Inclass在课上Attheschool在学校Inthefrontof在…前部(内部)Intheclass在这个班Inbed在睡觉Inthebed在床上Attable吃饭Atthetable在桌前用适当的介词填空Inhospi
6、tal住院Inthehospital在医院里bysea乘船bythesea在海边Gotoschool去上学Gototheschool去学校onearth究竟ontheearth在地球上1)Heknowseverythingtheschool.2)Heusuallygoesoutforawalklunch・3)Ihavelunchhalfpasteleven.4)Pleaselooktheblackboard・5.Theywork8:0016:00.5)Whendotheygetupthemorning?6)Willwegobusorfoot?7.Wchavelearn
7、edalotyou.7)Thecupwasbrokenhe匚1)Whereareyou?FmBeijing.2)Weareworkingthepeople・10）Itistimebreakfast.11）Classbeginsnine・12）WecomedifferentpartsofAmerica・13）Shelivesherfathe匚14）Sheoftengetsuphalfpastsixthemorning・15）Westayheresixmonths.16）YouareleavingShanghai.17）Hewasbom1986.18）W
