人教版新课标英语选修6 Unit 4　　Global warming　　全球变暖 复习课件.ppt

Unit4Globalwarming全球变暖,重点难点研析,知能强化训练,Unit4,基础知识自采,基础知识自采,核心词汇1_(消费者)areencouragedtocomplainaboutfaultygoods.2We_(提倡)usingclothorpaperbagsinsteadofplasticones.3Thereisagrowing_(趋势)forpeopletoworkathomeinsteadofinanoffice.4.Childasheis，hehasmanyinterests，_(变化)fromchesstoswimming.,5Shewastremblingwithexcitement，buttomysurprisehervoicewas_(稳定)6Janesworkisabove_(平均)whileHobsisverymuchbelowit.7Undernormal_(情况)，thesetwogasesreactreadilytoproducecarbondioxideandwater.8Allthecropsandfieldshereareunderwaterduringthe_(洪水),9Theviolent_(现象)ofnaturearestillhardforustodealwith.10I_(瞥了一下)attheclockanddiscoveredthattherewereonly30secondslefttoplay.11We_witheachotheronthematter，butitisurgenttoreducethe_，forwedonthavemuchtimeleft.(agree),12用educate的适当形式填空(1)Hewas_ataverygoodschoolinhisteens.(2)Nocountrycanaffordtoneglectthe_ofitsyoungpeople.(3)Theyengagedayoung_toteachthemSpanish.,1.Consumers2.advocate3.tendency4.ranging5.steady6.average7.circumstances8.floods9.phenomena10.glanced11.disagree；disagreement,12.(1)educated(2)education(3)educator,高频短语1_发生；造成2_同意；赞成；订购3_大量的4_上升；增长；升起5_导致6_反对,7_即使8_继续9_大体上；基本上10_代表一方；作为的代言人11_忍受；容忍12_只要13_等等,eabout2.subscribeto3.quantitiesof4.goup5.resultin6.beopposedto7.evenif8.keepon9.onthewhole10.onbehalfof11.putupwith12.solongas13.andsoon,重点句式1_theearthisbecomingwarmerandthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.毫无疑问，地球正变得更加暖和。全球变暖是人为的，而不是随意的自然现象。2_westartreducingtheamountofcarbondioxideandothergreenhousegases，theclimateisgoingtokeeponwarmingfordecadesorcenturies.,即使我们开始减少二氧化碳和其他温室气体的含量，在未来几十年或几个世纪内，气候仍会持续转暖。3ItisOKtoleaveanelectricalapplianceon_youareusingit_，turnitoff!只要你在使用电器设备，你便可以把它开着，如果不用就把它关掉！,4_tomakethingsfromnewmaterials，so，ifyoucan，buythingsmadefromrecycledmaterials.用新材料来做这些东西要花费大量的能源，因此，只要有可能，就买那些用回收材料制成的物品吧。,1.Thereisnodoubtthat2.Evenif3.solongas；ifnot4.Ittakesalotofenergy,重点难点研析,1quantityn量；数量；数目，数额(回归课本P26)Theproblembeginswhenweaddhugequantitiesofextracarbondioxideintotheatmosphere.当我们向空气中排放大量的多余的二氧化碳的时候，问题就开始产生了。,归纳拓展,例句探源(朗文P1667)Thecardsarecheaperifyoubuytheminquantity.大批量购买这些卡片要便宜些。(牛津P1620)Thedataislimitedintermsofbothqualityandquantity.这份资料在质量上和数量上都很有限。,Largequantitiesofinformationhavebeencollected.已经收集了大量信息。Alargequantityofgoodearthisbeingwashedawayinthisareaeveryyear.每年这个地区大量沃土被冲走。Largequantitiesofwaterarebadlyneededhere.这里急需大量水。,【温馨提示】aquantityof后同样可接不可数名词或可数名词的复数形式。但当它作主语时谓语动词一般根据其所修饰的名词而定，而quantitiesof作主语时，不论其后的名词为可数或不可数，谓语动词都用复数。,即境活用1(2009年高考福建卷)Whydoesthelakesmellterrible?Becauselargequantitiesofwater_.AhavepollutedBisbeingpollutedChasbeenpollutedDhavebeenpolluted,解析：选D。本题考查时态、语态及主谓一致问题。句意：这湖水怎么这么难闻？因为大量的水已经被污染了。water与pollute为被动关系，故排除A项；B项表示“正被污染”，故排除；largequantitiesof后加名词，谓语动词应与quantities保持一致，故排除C项，答案为D项。,2opposevt.反对；反抗；与(某人)较量(回归课本P27)Ontheotherhand，therearethose，likeGeorgeHambley，whoareopposedtothisviewandbelievethatweshouldnotworryabouthighlevelsofcarbondioxideintheair.在另一方面，还有一些人，像科学家乔治汉布利，反对上面的观点，他们认为我们不必担心空气中会有高含量的二氧化碳。,归纳拓展,例句探源Tobehonest，Iopposeyourgoingtherealone.说实话，我反对你独自一人去那儿。Manypeopleopposedtheideaofbuildinganewhighwaybecauseofthegreatcost.由于需要巨额开支，许多人反对另修一条新公路的主意。(朗文P1437)Mostcompanybossessaytheyareopposedtoemployeesworkingalotofovertime.大多数公司老板说，他们反对雇员频繁加班。,即境活用2我们坚决反对帮助酗酒成瘾的那位年轻人。We_helpingtheyoungmanaddictedtoalcohol.答案：arefirmlyopposedto,3averageadj.平均的；普通的；正常的；平常的n平均数；平均水平；一般水准v平均为；计算出的平均数(回归课本P29)Thegreenhouseeffectgivestheearthssurfacetheaveragetemperatureof15.温室效应使地球表面的平均温度保持在15。,归纳拓展,例句探源(牛津P118)Iwasjustanaveragesortofstudent.我只是一个普通的学生。(2009年高考全国卷)Onaverage，peoplewhodontsmokearehealthierthanpeoplewhodo.通常，不吸烟的人比吸烟的人健康。,Tomsworkatschoolisabove(the)average，whileHarrysisbelow(the)average.汤姆在学校的功课在一般以上，而哈利的功课在一般以下。Ourweeklyprofitsaverageoutatabout$750.我们每周的平均利润约为750美元。,即境活用3Dontexpecttoomuchofhim.Afterall，heisachildof_intelligence.AaverageBslightCstrangeDdifferent解析：选A。根据前句“不要对他期望太大”，可以推断，这个孩子智力水平一般。,4glancevi.看一下，扫视n一瞥(回归课本P27)Glancequicklyatthemagazinearticleandanswerthequestions.快速浏览一下这篇杂志文章，然后回答问题。,归纳拓展,例句探源(全国高考)But，asheglanceddownthepage，anoticecaughthiseye.但他往下浏览时，有则布告吸引了他的眼球。(牛津P863)Ionlyhadtimetoglanceatthenewspapers.我只来得及浏览一下报纸。,(牛津P863)Atfirstglance，theproblemseemedeasy.乍一看问题似乎很简单。Itookaglanceatthehallandfoundmanyfamiliarfacesamongtheaudience.我扫视了一下大厅，发现观众中有许多熟悉的面孔。,即境活用4匆匆看了病人一眼之后，医生打电话叫了救护车。_atthepatientthedoctorrangforanambulance.答案：Afteraquickglance,5circumstancen环境；情况，通常用作复数形式(回归课本P30)Recyclecans，bottles，plasticbagsandnewspapersifcircumstancesallowyouto.如果情况允许的话，回收容器、瓶子、塑料袋和报纸。,归纳拓展,例句探源(牛津P344)Underthecircumstances，itseemedbetternottotellhimabouttheaccident.在这种情况下，不告诉他有关这次事故的情况似乎更好。(牛津P344)UndernocircumstancesshouldyoulendPaulanymoney.你无论如何都不能借钱给保罗。Circumstancespermitting，Illgoabroadtostudy.情况允许的话，我要出国学习。,即境活用5(2011年江苏盐城中学检测)Undernocircumstances，Iwaswarned，_togivethepasswordtosomeoneelse.AcouldIBIcouldCIwasDwasI解析：选D。考查倒装语序。带有否定词的短语Undernocircumstances位于句首时，句子应该采用部分倒装的形式；因为本句的谓语动词是不定式，因此选D。,6comeabout发生；造成(回归课本P26)Sohowhasthiscomeaboutanddoesitmatter？那么，这种温度的升高是怎么产生的呢？会有什么影响呢？,例句探源(牛津P386)Canyoutellmehowtheaccidentcomeabout?你能告诉我事故是怎样发生的吗？Illneverunderstandhowitcameaboutthatyouwereanhourlateonsuchashortjourney.我真不明白这么短的路程你怎么会迟到一个小时。,易混辨析comeabout，happen，takeplace，breakout(1)comeabout“发生，产生”，指要求解释或说明事情发生的理由。通常与how连用。(2)happen“发生”，常用词汇，指偶然的，意外的，具体客观事物的发生或出现，尤其指自发的未能预见的事情的发生。(3)takeplace“发生”，指事件或事故的发生是在预料中的并非是偶然的，进而引申为按计划“进行，举行”。(4)breakout指战争、火灾、疾病等的突然“发生、爆发”。,即境活用6用comeabout；happen；takeplace；breakout填空：(1)Afire_duringthenight.答案：brokeout(2)Luckilytheearthquakedidnt_inthecenterofthecity.答案：happen,(3)Howdidit_thatthedairyproductswereharmfultochildren?答案：comechildren(4)Greatchanges_inourschoolinthepastfewyears.答案：havetakenplace,7resultin导致(回归课本P26)Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.他们还赞同下述观点，正是由于越来越多地燃烧化石燃料导致了二氧化碳的增加。,归纳拓展,例句探源Hishardworkresultedinexcellentgradesinhisexams.他的努力使他在考试中取得了优异的成绩。However，pollutionandotherseriousproblemshavealsoresultedfromhumanprogress.但是，人类的发展也产生了污染和其他严重的问题。(牛津P1702)Hemadeonebigmistake，andasaresult，losthisjob.他犯了个大错，结果丢了工作。,About21millionpeoplediedduringthe1990sasaresultofsmoking.20世纪90年代约有2100万人死于吸烟。Hehastriedveryhardtofindajob，untilnowwithoutresult.他努力找工作，但直到现在仍毫无结果。,即境活用7毫无疑问，你的成功是你辛勤劳动的结果。Thereisnodoubtthatyoursuccesshas_yourhardwork.答案：resultedfrom8Hereffortsresulted_hersuccesswhileherbrothersfailureresulted_hislaziness.Afrom；fromBfrom；inCin；fromDin；in解析：选C。考查介词。resultin导致；resultfrom因而产生，由造成。,8putupwith容忍；忍受(回归课本P30)Wedonothavetoputupwithpollution.我们没必要忍受污染。,归纳拓展,例句探源Icantputupwithyourrudenessanymore；leavetheroom，please.我不能再忍受你这种无礼的态度了，请离开这个房间。(牛津P1615)Imnotgoingtoputupwiththeirsmokinganylonger.我再也不能容忍他们抽烟了。Wearetryingtoputasidesomemoneyeverymonthforourvacation.我们尽量每月存些钱供度假用。,Onemomentplease，Imjusttryingtoputyouthrough.请等一下，我这就给你接通电话。Pleaseputoutthelightbeforeyougotobed.上床之前请把灯关掉。Heputforwardanewtheoryatthemeeting.在会上他提出了一种新理论。,即境活用9Shewillhavetofindsomeotherwork，forshecant_theloudnoiseanymore.AcomeupwithBputupwithCkeepupwithDendupwith解析：选B。考查短语辨析。putupwith忍受，容忍。句意：她将不得不另找工作，因为她再也忍受不了那么大的噪音了。comeupwith想出，提出；keepupwith跟上；endupwith以结束。,10Theteacheraskedadifficultquestion，butTedfinallymanagedto_agoodanswer.AputupwithBkeepupwithCcomeupwithDgothroughwith解析：选C。句意：老师问了一道很难的题，但特德最后还是想出了令人满意的答案。putupwith忍受；keepupwith跟上；comeupwith提出；gothroughwith(艰难地)完成，履行诺言。根据句意选C。,11Dontbesodiscouraged.Ifyou_suchfeelings，youwilldobetternexttime.AcarryonBgetbackCbreakdownDputaway解析：选D。carryon开展；进行；getback取回；breakdown分解；崩溃；出故障；putaway收拾起来。句意：不要泄气，如果你收起这种情绪，下次你会做得更好。,1【教材原句】Ittakesalotofenergytomakethingsfromnewmaterials.(P30)用新材料造东西需要大量能源【句法分析】句中it为形式主语，take意为需要/消耗(时间、劳力等)，take作此含义时通常不可用于被动式。,Tobehonest，ittakesgreatcouragetotellthetruth.老实说，说出真相需要很大勇气。Ittakesperseveranceandcouragetobecomeasuccessfulman.成为一个成功的人需要毅力和勇气。,即境活用12Perseveranceisakindofqualityandthatswhat_todoanythingwell.AonetakesBoneistakenCittakesDitistaken解析：选C。句意：毅力是一种品质，是一种做好任何事情都需要的品质。表语从句中隐含一个句型：Ittakes.todosth.。,2【教材原句】ItisOKtoleaveanelectricalapplianceonsolongasyouareusingitifnot，turnitoff！(P30)在使用电器设备时你可以把它开着，