高二 人教版 英语 选择性必修四第三单元《Lesson 1 Reading and Thinking》课件

Unit3EnvironmentalProtectionLesson1ReadingandThinking高二—人教版—英语—选择性必修四第三单元Whatcanyouseeinthepicture?GlaciersaremeltingWhatmighthappeniftheglacierscontinuetomelt?I.Lead-inWhatleadstothemeltingofglaciers?Iceisbreakingofffromglaciers.Globalwarming.intheArticandAntarctica.atsunamiariseinsealevelI.Lead-inWhatmighthappeniftheglacierscontinuetomelt?lossofwildlifehabitatWhatotherconsequencesmighttheglobalwarmingbringabout?I.Lead-inmorefrequentwildfireslongerperiodsofdroughtandheatwavesinsomeregionsanincreaseinthenumberandintensity(强度)oftropicalstormsEarthprovidesenoughtosatifyeveryman'sneeds,butnoteveryman'sgreed.

——MohandasK.GandhiI.Lead-inLearningobjectivesInthisunit,youwill:readaboutdifferentenvironmentalproblems.listentoaninterviewwithanexpertandtalkaboutairpollution.writeareportonanenvironmentalissue.learnmoreaboutenvironmentalissuesandwaystoprotectourplanet.Lesson1ReadingandThinkingLearningobjectivesInthislesson,youwill:1.learnaboutglobalwarminganditscauses,effectsandsolutions;2.usemindmaptoanalyzethemainidea,structureandlanguagefeaturesofancause-effectexpositoryessay;3.thinkaboutwhatmighthelpdealwiththeproblemofglobalwarming,andprovidepossiblesolutions.Whatmightthepassagebeabout?II.Pre-readingThegraphshowsusthattheglobalsurfacetemperatureisrisingcontinuouslyanddramaticallyinrecentdecades.Whatinformationcanyougetfromthegraph?II.Pre-readingWhatmightcausethedeathofthepolarbear?II.Pre-readingThepolarbearlooksskinny,andmightdieofdiseaseoralackoffood.Howwouldthepicturesbelowberelatedtothetopicofthepassage?II.Pre-readingMainideaTheopeningsentenceTheclosingsentenceStandoutsentenceSummarizebyyourselfReadforthemainideaofeachparagraphIII.While-readingPara1:theevidencesofdramaticglobalclimatechangeReadforthemainideasPara2:acaseofglobalwarminganditsimpactonEarth’secologyReadforthemainideasPara3:thecauseofglobalwarming——theman-madegreenhouseeffectReadforthemainideasPara4:theeffectsoftheriseintemperatureReadforthemainideasPara5:thesolutionstoreducinggreenhousegasemissionsReadforthemainideasIII.While-readingPara1:theevidencesofdramaticglobalclimatechangePara2:acaseofglobalwarminganditsimpactonEarth’secologyPara3:thecauseofglobalwarming——theman-madegreenhouseeffectPara4:theeffectsoftheriseintemperaturePara5:thesolutionstoreducinggreenhousegasemissionsReadforthemainideasGlobalwarmingThephenomena/evidenceofdramaticglobalclimatechangeThecausesoftheincreaseintheglobalaveragesurfacetemperatureTheeffects/consequencesoftheriseintemperatureThesolutionstoreducinggreenhousegasemissionsReadforthemainideasexpositoryExtendthemindmapbasedonthepassagetoshowthefollowingaspectsofglobalwarming:GlobalwarmingphenomenacauseseffectssolutionsGlobalwarmingcausesphenomenacontinuedgreenhousegasemissionsbyburningfossilfuels.ariseintemperature;awarmingoceanandatmosphere;meltingiceandrisingsealevels;thestarvedpolaranimals.effectssolutions“man-made”greenhouseeffectanincreaseinextremeweatherandnaturaldisasters;deathsandeconomiclosses;lossofhabitatandwildlifeextinction.individualsrestricttheamountofcarbondioxideourlifestylesproduce;educatethepublic.governmentsmakepolicies;takemeasurestoreduceemissions.Readfordetails&languagefeaturesHowhasclimatechangeinfluencedthepolarbear’slife?ReadPara1-2andanswerthequestions:Thebearcouldnothuntonice.Lowsea-icelevelsinthearcticcircle.Itwasstarvedtodeath.Ithadtotravellongerdistancestofindfood.Climatechange.Itsdeadbodyfound.123456Readfordetails“skinandbones”Howhasclimatechangeinfluencedthepolarbear’slife?ReadPara1-2andanswerthequestions:Climatechange.Lowsea-icelevelsinthearcticcircle.Thebearcouldnothuntonice.Ithadtotravelgreaterdistancestofindfood.Itwasstarvedtodeath.Itsdeadbodyfound.Readfordetails“skinandbones”Whatisgreenhouseeffect?ReadfordetailsReadPara3andanswerthequestion:ABCDA.Heatenterstheatmosphere.D.Heatistrappedbygreen-housegases.B.Heatwarmstheearth’surfaceasshort-waveradiation.C.HeatisreleasedbackintospaceatlongerwavelengthsAtmosphereEarth

Whydidtheauthormentiontheclimatescientists’warning?Becausethewriterwantstowarnusoftheurgencyoftakingappropriateactionstotackletheissueofglobalwarming.ReadforlanguagefeaturesReadPara4andanswerthequestion:

Whatwritingtechniquesareusedinthisexpositoryessay?ReadforlanguagefeaturesExamplesandacasestudyasevidence;ExplanationsofscientificconceptsQuotationsfromexpertsinthefield;Statisticsfromscientificresearches.ReadPara4andanswerthequestion:IV.Post-readingWhatshouldwedoindailylifetoreduce“carbonfootprint”?Extendyourmindmapandshareinclass.e.g.avoiddrivingcars;usepublictransportation;reducewaste;recycle;……30summarizethemainideaofeachparagraphbyusingreadingstrategy;analyzethestructureofanexpositoryessaybydrawingmindmap;summarizethewritingtechniquesinanexpositoryessay;discusssomepossiblesolutionsforreducingcarbonfootprint.Summary31Domoreresearchonglobalwarming,e.g.howtoreducecarbonfootprint,andextendyourmindmapbyaddingmoredetailsforeachpart.V.AssignmentClimatechangeUnit3EnvironmentalProtectionLesson1ReadingandThinking高二—人教版—英语—选择性必修四第三单元答疑AssignmentOneDomoreresearchonglobalwarming,e.g.howtoreducecarbonfootprint,andextendyourmindmapbyaddingmoredetailsforeachpart.34preferwalking,cyclingorpublictransporttodrivingprivatevehicles;usenewenergyvehicles/automobiles;Howtoreduce“carbonfootprint”?35unplug

appliances

that

are

not

in

use;use

energy-efficient

light

bulbs;switchoff/turnoffthelight;

Howtoreduce“carbonfootprint”?turnofftapandsavewater.

36avoiddrinkingbottledwater;improvewastesortingandrecycling;reduceourplasticdisposablewaste.Howtoreduce“carbonfootprint”?1.WhydidthewritermentionthedeathofapolarbearonNorway’sArcticIslandofSvalbard?A.Tointroducethetopic.B.Toprovideanexample.C.Toargueagainstanopinion.D.Toprovidebackgroundinformation.AssignmentTwo2.Accordingtothepassage,whathelpstheearthsustainlife?A.Short-waveradiation.

B.Long-waveradiation.C.Greenhouseeffects.D.Oxygenandwater.3.Accordingtothepassage,which