北师大版Unit22EnvironmentalProtection导学案.ppt

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Unit22EnvironmentalProtectionLessononeGlobalWarming教案,Learningobjectives:UnderstandthetextandgraspthelanguagepointsLearningdifficulties:Analyzethelonganddifficultsentencestoimprovethecomprehensiveability,StepWordspellingadj.:relevant_联邦的_n.:consensus_hurricane_农业_光线_coincidence_保护_substitute_vt.:固定_注定毁灭,宣判死刑_sacrifice_主张,提倡_威胁_回收利用_声称_,StepLanguagepoints1.(原句回放)Inthelastfewdecades,scientistshavereachedconsensusandreportedthathumanbeingsarecausingchangesintheEarthsclimatesomethingpreviouslyseenasbeyondourcontrol.(para.1)翻译_单词:beyond超出短语:超出的控制_beyondourcontrol_beyondbelief_beyondhope_beyondreason_【高考链接】Sorry,Madam.Youdbettercometomorrowbecauseits_thevisitinghours.(福建2006)A.duringB.atC.beyondD.before句子分析:详见Englishweekly31期,第二版2.(原句回放)Theyclaimthatinthelast50years,gasespumpedintotheEarthsatmospherebythefactoriesandvehicleshavebeenspeedinguptheprocessofglobalwarmingandaffectingourclimate.(para.1)翻译:_短语:speedup_表示从过去某一时间开始一直持续到现在的动作.分析:本句是个复合句。Theyclaim.是主句,thatinthelast为_的宾语从句。宾语从句的主干结构为:gaseshavebeenspeedinguptheprocessofglobalwarmingandaffectingourclimate。pumpedinto.vehicles(=whichhavebeenpumped.)是_作定语修饰gases;havebeenspeedingup.和affecting(省略了havebeen).是并列谓语。,3.(原句回放)Lookingahead,scientistsbelievethatglobalwarmingcouldbeoneofthebiggestenvironmentalproblemsfacingthe21stcentury.(para.1)翻译:_分析:在本句中,现在分词短语lookingahead充当_,相当于时间状语从句whenscientistslookahead;现在分词短语facingthe21stcentury充当_,修饰problems,相当于whicharefacingthe21stcentury。4.GlobalwarmingreferstoanaverageincreaseintheEarthstemperaturethat,inturn,leadstoclimatechange.(para.2)翻译:_短语:本句中referto_inturn_leadto_这三个短语的意思。即学即练:1.请不要再提了。_2.学生们依次进行体格检查。_3.他的懒惰导致了他在期末考试中不及格。_5.Withoutthesenaturallyoccurringgases,thesunsrayswouldbouncebackintospaceleavingtheEarthcoldandimpossibletoliveon.(para.2)翻译:_用法详见学考教程P66.Whenthepresenceofthesegasesintheatmosphereincrease,however,moreheatistrappedandtheEarthstemperaturerises.(para.2)翻译:_用法详见学考教程P6,Thisisnoeasytask,however,andsomegovernments,forexamplae,theUSAsfederalgovernment,expressreservationsaboutwhetherglobalwarmingisreallycausedbyhumanactivities.(para.5)翻译:_用法详见Englishweekly31期,第二版Increasedtemperatureswillalsocausethepolaricetomelt,raisingsealevelsandfloodingmanyislandsandcities.(para.4)翻译:_句子分析:raisingsealevelsandfloodingmanyislandsandcities在此句中作结果状语。,Step.Importantphrases1.展望未来_2.依次_3.导致、引起_4.采取行动_5.在前面_6.提到、谈到_7.把某事归罪于某人_8.参与、起作用_9.有关的、相关的_10.有责任做某事_11.关掉_StepMultiplechoice1.Agreenhousestayswarmbecausetheglass_theheatofthesun.A.seizesB.trapsC.reserveD.recycles2.Thecompany_thatitisnotresponsibleforthepollutionintheriver.A.claimsB.condemnsC.calculatesD.demands,3.Jackiewasverylazy,andwhatsworse,hewasalwayslateforwork,sothebossthreatened_him.A.fireB.firingC.tofireD.tobefired4.Intodaysworld,theInternetisaveryusefultoolfor_businesscommunication.A.wrappingupB.growingupC.speedingupD.pullingup5.Ifyouinsistoncarryingoutthismadexperiment,Iwont_theconsequenceswithyou.A.carryoffB.slowdownC.pumpintoD.answerfor6.Possiblythatmandiedfromaheartattackwithoutanyone_wherethetreasurewashidden.A.knewB.toknowC.knownD.knowing7._intherefrigerator,thedrugshouldremaineffectiveforatleastthreemonths.A.TokeepB.KeptC.KeepingD.Bekept8.Mr.Baker,ourgeographyteacher,toldusthattheearth_aroundthesun.A.goB.wentC.goesD.isgoing9.Inthelastfewdecades,greatchanges_throughouttheworld,especiallyinourcountry.A.wastakenplaceB.hadtakenplaceC.havebeentakenplaceD.havetakenplace10.Itsquite_mewhythepoormancouldbuysuchanexpensivecar.A.forB.behindC.againstD.beyond,
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