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介词1.介词（preposition）是用于名词、代词或相当于名词的结构之前，表示词语之间意义关系的词，介词又称前置词，它是一种虚词，不能在句中单独承担成分。2.按照词义，介词可分为表地点、表时间、表除去、表比较、表反对、表原因、表目的、表结果、表手段、表方式、表所属等。3.要求掌握的介词主要是in、on、at、to、from、by、with、for、about、after、before等十几个。1.在树上inthetree/在同一个班inthesameclass/在北京inBeijing2.在世界上intheworld/在河里intheriver/在城市inacity3.在阳光下inthesun/在北方inthenorth/inChina在中国4.在第五中学inNo.5MiddleSchool5.在……的前部inthefrontof在……前面infrontof6.在……中间/（内部）角落inthemiddle/cornerof7.固定用法：住院inhospital/在露天intheopenair/躺着看书readinbed8.站成行standinline/处于危险中indanger/处于麻烦中introuble/惊奇地insurprise9.用英语inEnglish/穿红色的inred/以…方式in…wayof表示大地方，表示空间、地域或者物体内部应用in，或表示在…范围之内。inonunderWhereisTom?1.在…的尽头attheendof/在大门口atthegate/在第二个十字路口atthesecondcrossing2.在公共汽车站atthebusstop/在校读书atschool/在家athome3.在医院诊所atthedoctor’s/在……头部/脚下atthehead/footof4.atthestation/airport/zoo/postoffice5.atthefrontdoor/atthecinema/supermarket/meeting/party/thecrossroad6.固定用法：stayathome/atwork/attable在吃饭表示较小的地方，表示空间的某一点，出入口等，选at1.在墙上onthewall/在…的另一边ontheothersideof/在左边/右边ontheleft/right2.在左/有手边ontheleft/righthandside/在火车上onthetrain3.在电视/收音机/电话/网上onTV/theradio/thetelephone/theInternet4.固定用法：访问…onavisitto…/展览onshow5.在去…的路上onthewayto…6.onmyhead/nose表示附着在表面上，覆盖等，表示接触的面上、边上、线上，用on。比较：aholeinthefloor/wallTherearemanyapplesonthetree.Therearemanybirdsinthetree.LucyLilyMarySunnyKittybetweennexttoTommyinfrontofbehind几组表示位置关系的介词比较D．典型例题：1.JapanisintheeastofAsia.2.JapanistotheeastofChina.3.KoreaisonthenortheastofChina.巩固练习：1.BisintheeastofA.2.DistotheeastofA.3.CisontheeastofA.CBADnortheastsouthwestfall/jumpoffthetreeinthetreeonthetreeonaboveoverbelowunderbeneath•above,on和over都有“在……之上”的意思，on表示接触早表面上，如abookonthedesk;above和over表示“位于某物上方”或“高于……”，不接触表面。Over指在垂直的上方，而above通常指不垂直的上方。5.across&throughacrossacross(从表面穿过)/through（从内部穿过）1.TaiwanisoneoftheprovincesofChinaanditis_____ofChina.A.inthenortheastB.inthesoutheastC.totheeastD.tothesouth2.Chinalies__theeastofAsiaand___thenorthofAustralia.A.to;toB.in;toC.to;inD.in;onBB3.Before1990therewasnoairline__thetwocities.A.alongB.inC.betweenD.among4.Thefood___mycountryisquitedifferent___thathere.A.in;likeB.to;fromC.from;toD.in;from5.There’samap___theworld___thewall.CD6.Therearemanyapples___thetree.Abird___thetreeispickinganapple.A.in;onB.on;inC.in;atD.to;of7.TheYoungPioneerswalked___thegateswithUncleWang.A.throughB.acrossC.overD.afterBA8.Whenthebellrangforclass,allthestudentswent___theclassroom.Ourteachercame___hisofficeandthrewhisbook__theteacher’sdeskangrily.A.in;outof;onB.into;from;onC.into;from;ontoD.in;outof;onto9.Shehasseveralfriendsherebutshetalkslittle___them.A.betweenB.amongC.onD.duringCB1.at(在……小地方)/in（在……大地方）/on（在……表面之上）2.between…and(两者)among(三者以上)3.in（范围内）/to（范围外）/on（相邻）4.above（之上，高于）/over（垂直上方）/on在……上面5.by就在旁边/beside近旁紧靠=nextto/near附近6.across(从表面穿过)/through（从内部穿过）7.in/into(强调运动变化)on/onto（表示位置改变）GoodbyeClass!