Unit3EnvironmentalProtectionReadingandThinking課件-高中英語人教版選擇性

Unit3EnvironmentalProtectionReadingandThinkingTeachingObjectives:1.Knowaboutclimatechangeandsummarisethemainideaofeachparagraph.2.Learnaboutthe"greenhouseeffect"andcreateadiagramdescribinghowitworks.3.Analysetheconsequencesofclimatechangeandenhancetheawarenessofenvironmentalprotection.Lead-inHowdoyoufeelaboutthefollowingvideo?Lead-inEarthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.—MohandasK.Gandhi地球所提供的物質(zhì)財(cái)富足以滿足每個(gè)人的需求，卻不足以滿足每個(gè)人的貪欲?！边_(dá)斯·卡拉姆昌德·甘地droughtfloodglobalwarminganimalsdyingfireGlaciersmeltingWhatisitabout?Lookatthepictureandgraphbelow.Whatinformationcanyougetfromit?Theearthisbecomingwarmerandwarmer.Why?Becauseoftheglobalwarming.Readthetextquicklyandmatchthemainideawitheachparagraph.While-reading

0102030405Globalclimateischangingdramatically.

Analarmingcaseaboutabearstarvedtodeath.

Whatiscausingtheincreaseintheglobalaveragesurfacetemperature.Theeffectoftheriseintemperature.

Thesolutionstoreducinggreenhousegasemissions.Fast-readingRead&Think:ThestructureandtexttypeProblemCausesConsequencesSolutionWhile-readingReadpart1(Para.1-2)andyourwordstodescribehowclimatechangehaveinfluencedthepolarbear’slife.

AproblemClimate’sisgettingwarmerandwarmerClimatechangebearscouldnothuntlowsea-icelevelshadtotravelgreaterdistancestofindfoodstarvedtodeathitsdeadbodyfound

Whatistherootcause?Readingforthedetails(Para.3:cause)

naturalman-madeDefinitionHeatfromthesunentersthe__________andwarmsEarth’s__________as_________-waveradiation.FunctionKeepingEarth’swarmand_____________DefinitionPeopleproducehugeamountsof_________greenhousegasesbyburning_____________.AbigproblemMore________energyistrappedintheatmosphereandcausesEarth’ssurfacetemperatureto________quickly.habitableextrafossilfuelsatmospheresurfaceshortheatriseGreenhouseEffectGreenhouseeffect“Natural”greenhouseeffect“man-made”greenhouseeffectReadingforthedetails(Para.3:cause)

While-readingReadpart3(para.4)carefullyandanswerthefollowingquestions.1.Whydidtheauthormentiontheclimatescientists’warning?2.Whataretheeffectsofglobaltemperaturerise?extremeweathernaturaldisastersseriousdamage,costinghumanlivesextremerainstorms,heatwavesGlobalwarmingled

toled

toresultsexamplesBecauseitisessentialthatwetakeactionanditneedstobebroughttoeveryone’sattention.While-readingReadpart4(para.5)andanswerthefollowingquestions.1.Whatistheauthor’spurposeofwritingthistext?A.Encouraginggovermenttopromoteemissions.B.Educatingindividualstoseizetheopportunity.C.Inspiringpeopletodealwiththeclimatechange.D.Requiringeveryonetochangeunhealthylifestyles.2.Whichsolutionismentionedtodealwithclimatechange?A.Individualsincreasetheir“carbonfootprint”.B.Govermentsmakepoliciesandtakeactions.

C.Peopleareeduacadedabouttheirlifestyles.D.Everyonetakemeasurestocontinueemissions.SummarizingCLIMATECHANGEREQUIRESTHEWORLD’SATTENTIONThepresentsituationThecausesTheimpactsThesolutionsEarthisgettingwarmerandwarmer.Awarmingoceanandatmospherealongwithmeltingiceandrisingsealevels.The“man-made”greenhouseeffecthasnowbecomeabigproblem.HugequantitiesofextragreenhousegasesproducedbyburningfossilfuelscauseEarth'ssurfacetemperaturetorisequickly.Theriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisastersworldwide.Newsreportsarefrequentlybroadcastaboutextremerainstormsandheatwavescausingdeathsandeconomiclosses.Governmentsneedtoconsidermakingpoliciesandtakingappropriateactionsandmeasures.Weasindividualscanreduceour“carbonfootprint”byrestrictingtheamountofcarbondioxideourlifestylesproduce.Discussion1.Whatexamplesofextremeweatheranddisastersdoyouknow?

Makealistofthem.2.Doyouthinkitishumanactivitythatcausedglobalclimatechange?Giveyourreasons?Tsunami(海嘯）flood（洪水）landslide（滑坡）

sandstorm（沙塵暴）thunderstorm（雷雨）earthquakehail（冰雹）heatwave（熱浪）coldwave（寒潮）typhoon（臺(tái)風(fēng)）tornado(龍卷風(fēng)).Yes.Humanbeingsburntoomuchfossilfuelsandproducelargequantitiesofcarbondioxide,causingthetemperaturetogoupsteadily.Lesstissue,regainhandkerchiefforestprotectionTurnofflight,switch,pulltheplugifnotuse.planttreesHowdowelivealow-carbo