系列Globalwarming 优质课比赛一等奖-完整版课件

Unit4GlobalwarmingSectionⅠWarmingUp&Reading一、课文大意填空Fromthepassageweknowthatthe(1)__________oftheearthison(2)________．Atthesametime,thispassagealsoshowsuspeople's(3)________ideasabout(4)________warming,andanalysesthereasonsforglobalwarmingandthepossibleimpactbasedon(5)________anddata.temperaturerisedifferentglobalgraphs二、根据课文内容，选择最佳答案

1．Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?_____A．DrJaniceFoster.C．GeorgeHambley.B．CharlesKeeling. D．SophieArmstrong.

2．DrJaniceFosterbelievesthatglobalwarmingiscausedby________.A．burningfossilfuelsC．watervaporB．greenhouseD．naturalgasBA3．Theauthorprobablyagreesthat________.A．actuallyglobalwarmingisgoodformanB．weshoulddonothingabouttheglobalwarmingC．catastropheswillhappeniftheglobekeepsonwarmingD．alotremainstobefoundoutabouttheeffectsofglobalwarmingD

4．WhichisNOTtheeffectofglobalwarming?______ A．Thesealevelwillrise. B．Severestorms,droughts,famines,thespreadofdi-seases,anddestructionofspecieswillhappen. C．Cropswillproduceless. D．Plantswillgrowfaster. 5．Whatisthemainideaofthepassage?_____A．Globalwarming.C．Economiccrisis.B．Airpollution.D．Tsunamis.CADrJaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto(1)________．Anincreaseoffivedegreeswouldbea(2)________andcouldbevery(3)________．Morecarbondioxideisa(4)________thing,whichmakescropsproduce(5)________andwillencouragea(6)________rangeofanimals.三、阅读课文，然后完成下列表格ThedifferentideasbetweenDrJaniceFoster&GeorgeHambleygoupcatastropheseriouspositivemoregreaterSohowhasthiscomeaboutanddoesitmatter？这种温度的增长是怎么产生的呢？会产生什么影响呢？1．comeabout发生；造成典例Doyouknowhowtheaccidentcameabout?你知道车祸是怎么发生的吗？拓展comealong一起来；进展comeacross(偶然)遇见comeup发生；举行comeupwith提出comeout出现；出版；(消息)传开；(观点)公开运用用come及其构成短语的适当形式填空①I'mgoingtoseeamovietoday.Doyouwantto_________？②Anearthquake________________inthatcountrytwomonthsago.③Herweddingis________________soon.④Itwasgettingdarkandthemoonwas________________.⑤I________________afriendinKFCealongcameaboutcomingupcomingoutcameacross

Thereisnodoubtthattheearthisbecomingwarmer(seeGraph1)andthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.毫无疑问，地球正在变暖(见表1)，但全球变暖是人为的，而不是随意的自然现象。2．Thereisnodoubtthat...解析Thereisnodoubtthat...表示“毫无疑问……”，that引导的从句为名词doubt的同位语从句，进一步解释“怀疑”的具体内容。如：

Thereisnodoubtthatshortsightednessisaseriousproblemamongtheyouthofourcountry.

毫无疑问，近视在我国年轻人中是一个严重的问题。运用完成句子________________(毫无疑问)you'llbewarmlywelcomed.Thereisnodoubtthat

Allscientistssubscribetotheviewthattheincreaseintheearth'stemperatureisduetotheburningoffossilfuelslikecoal,naturalgasandoiltoproduceenergy.所有的科学家都赞成这个观点，人们为了生产能量而燃烧化石燃料(如煤、天然气和石油等)，从而引起了地球温度的升高。3．subscribevi.同意；捐赠；订阅vt.签署(文件)；捐助典例Hedidn'tsubscribetomyproposal.他不赞同我的建议。Hesubscribedhisnametotheform.他在表上签了名。拓展subscribeto同意；赞成；订购，订阅运用完成句子①Ihavenever________________(同意)theviewthatschooldaysarethehappiestdaysofyourlife.②Thelawyerinvitedhisclientto________________(签署)theaffidavit(宣誓书)．subscribedtosubscribeTheproblembeginswhenweaddhugequantitiesofextracarbondioxideintotheatmosphere.当我们在大气层中增加了大量额外的二氧化碳时，问题就来了。4．quantitiesof大量的

解析quantitiesof表示“大量的”，既可用来修饰可数名词复数，也可用来修饰不可数名词，其谓语动词要用复数。如：

Quantitiesofpaperproductsareproducedinthisfactory.这家工厂生产大量的纸制品。Treescangiveoffquantitiesofwatereveryday.树木每天可以释放出大量的水分。拓展(1)aquantityof大量的(后接谓语动词用单数)inquantity在数量上；大量地

inlargequantities大量地(2)表示“大量的”的常用短语有：①只可修饰可数名词：many,manya(谓语动词用单数),agreat/goodmany,agreat/largenumberof/numbersof②只可修饰不可数名词：much,agreat/largeamountof/amountsof,agood/greatdealof③既可修饰可数名词，又可修饰不可数名词：alotof/lotsof,aquantityof/quantitiesof,plentyof运用用所给单词的适当形式填空①Quantitiesoffood________(be)putonthetable.②Alargequantityofapples________(be)soldout.are/wereis/wasItmeansthatmoreheatenergytendstobetrappedintheatmospherecausingtheglobaltemperaturetogoup.它意味着更多的热能将被困在大气层中，从而引起全球气温上升。5．tend解析(1)vi.趋向；易于；照顾Oldpeopletendtogetfat.老年人容易发胖。(2)vt.照顾；护理Sheisgoodattendinglittlechildren.她擅长照看小孩。拓展tendtodosth.倾向做某事

tendto/towardssth.倾向于某事

tend(to)sb./sth.照顾某人/某物运用完成句子①Wehireagirlto__________________(照顾孩子们)forafewhourseachday.②Thedrugiseffectivebut________________(易于)causeheadaches.tend(to)thechildrentendsto6．goup上升；增长；升起典例Pricesoffruitandvegetableshavegoneup.水果和蔬菜的价格已经上涨了。拓展goby经过；消失godown下降；下沉goover复习；仔细检查gothrough经历；遭受goon发生；继续运用用上面所提供的短语的适当形式填空①WehopethewaterlevelinChangjiangRiverwillstop________________.②You'resupposedto________________thegoodsbeforeyousign.goingupgoover

Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondio-xide.他们还赞同下述观点：正是由于越来越多的燃烧化石燃料导致了二氧化碳的增加。7．resultin导致典例Ouractionscanresultindisaster.我们的行为会引起灾难。辨析resultin/resultfrom(1)resultin意为“导致；结果是”，指引起某种结果，即主语是因，宾语是果。如：Anyofthesemayresultinseriousinjuryordeath.这些中的任何一个都会导致严重的伤害或死亡。(2)resultfrom意为“起因于”，指某种结果起因于某事，即主语是果，宾语是因。如：Twoconclusionsresultfromthisfact.从这一事实中可以得出两个结论。运用用上面所提供的辨析短语的适当形式填空①Theflood________________aconsiderabledecreaseinproduction.②Hisfailure________________notworkinghardenough.resultedinresultedfrom

Ontheotherhand,therearethose,likeGeorgeHambley,whoareopposedtothisviewandbelievethatweshouldnotworryabouthighlevelsofcarbondioxideintheair.在另一方面，还有一些人，像乔治·汉布利，他们反对上面的观点，认为我们不必担心空气中会有高含量的二氧化碳。8．opposevt.反对；反抗；与(某人)较量典例Hismotionwasopposedbymostdirectors.他的提议遭到了大多数董事的反对。拓展opposeoneselfagainst/to...(使)某人反对……beopposedto反对……运用完成句子①Hisparentswere________________(反对)theirson'srushdecision.②Theyoungman_____________________(使他自己反对)the

newpolicyonbehalfofhisgroup.opposedtoopposedhimselfto/againstTheypredictthatanywarmingwillbemildwithfewbadenvironmentalconsequences.他们预言说，变暖的情况不会很严重，对环境的影响也不会太坏。9．consequencen．结果；后果；影响典例Suchamistakemayleadtodisastrousconsequences.这样一种错误可能会导致灾难性的后果。拓展asa/inconsequence因而；结果

inconsequenceof由于……的缘故taketheconsequences(of)承担(某事的)后果oflittleconsequence意义不大，无足轻重运用完成句子①________________(结果),themanfailedinthegame.②Thecakewentbad________________(由于……)thehotweather.③Theconfidentgirlthinksthatbeauty________________(意义不大)toher.Asa/Inconsequenceinconsequenceofisoflittleconsequence

“...itwillencourageagreaterrangeofanimals—allofwhichwillmakelifeforhumanbeingsbetter.”“……它还会促进动物的生长——所有这些都能改善人类的生活。”10．range解析(1)n.种类；范围Thereisafullrangeofactivitiesforchildren.这里给孩子们提供各种活动。Shehasawiderangofinterest.她有广泛的兴趣爱好。(2)v.排列；归类于；变化；延伸Thecardswererangedinalphabeticalorder.卡片以字母顺序排列。Thepricesofleathershoesrangefrom100to250dollars.皮鞋的价格从100美元到250美元不等。拓展in/withintherangeof在……的范围内inrangewith和……并列arangeof一系列的；一排rangefrom...to...在……到……范围内运用完成句子①Thewatches________________(在这个范围内)arepricedat24.50dollars.②Theshowhadamassiveaudience,____________________(范围从孩子到)grandparents.③Iofferedher________________(一系列的)opinions.within/inthisrangerangingfromchildrentoarangeofGreenhousegasescontinuetobuildupintheatmosphere.温室气体继续在大气层中聚集。11．buildup聚集；集结；增强；建立典例Thecloudsarebuildingup.乌云正在聚集起来。Theweightliftingbuiltuphisbody.举重增强了他的体质。Shebuiltupmyconfidence.她帮我树立了信心。拓展buildon加/扩建；建立在……(基础)上

运用完成句子 ①Manyabigbusinesshasbeen________________(聚集)fromsmallones.②Thecompanydonated1milliondollarsto________________(增强)itshonour. ③Youcan________________(建立在……

基础上)whatotherpeopledid,andprovidethingsforotherpeopleto________________(在……基础上构建)．builtupbuildupbuildonbuildon

Evenifwestartreducingtheamountofcarbondioxideandothergreenhousegases,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。12．evenif