【主題式備課】Unit3 Environmental Protection高中英語選擇性必修第三冊

新人教版選擇性必修Book3主備人：成員：全體高二英語教師Unit3ENVIRONMENTALPROTECTIONEarthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.1.Whatcanyouseeinthepicture?2.Whatisthecauseofthisphenomenon?Globalwarming全球變暖meltingglacierTeachingobjectives:Bytheendofthisperiod,youwillbeableto1.knowabout

theclimatechangeandsummarizethemainideaofeachparagraph;2.learnaboutthe“greenhouseeffect”andcreateadiagramdescribinghowitworks;3.analysetheconsequencesofclimatechangeandenhancetheawarenessofenvironmentalprotection;4.voicetheirpersonalopinionsabouthowtodealwithclimatechange.WatchandTalk1.Choosetheextremeweatheranddisasters(災(zāi)難)mentionedinthepictures.A.

sealevelrise B.fireC.tsunami海嘯D.floodE.heatwaveF.volcaniceruption火山爆發(fā)G.drought干旱H.stormsealevelrisefloodheatwavestormLead-in2.Whattypeofwritingisthispassage?A.Argumentativewriting（議論文）B.Narrativewriting（記敘文）C.Expositorywriting（說明文）D.Advertisingwriting（廣告）本文是一篇說明文。說明文是客觀說明事物的一種文體，以解說或介紹事物的形狀、性質(zhì)、成因、構(gòu)造、功用、類別等為主要內(nèi)容。說明文主要通過對客觀事物或事理的介紹說明，達到以知識教人的目的，因此說明文以客觀、準(zhǔn)確為基本要求，強調(diào)科學(xué)性和客觀性。Whatisthegraphabout?Whatinformationcanyougetfromit?thechangeintheGlobalSurfaceTemperaturebetween1920and2016.TemperatureAnomalyshowshowmuchthetemperaturehasrisenabovewhatitwouldusuallybeatabaselevel.Before-readingTask1（任務(wù)一）:Readforthemainideaandthestructure.Part1:(para.1-2)Part2:(para.3)Part3:(para.4)Part4:(para.5)Theevidence(證據(jù))ofdramaticclimatechangethathadanimpactonEarth’secologyThecauses(原因)oftheincreaseintheglobalaveragesurfacetemperatureTheconsequences(結(jié)果)oftheriseintemperatureThesolutions(解決方法)toreducinggreenhousegasemissionsMatchthemainideawitheachpart.Fast-readingEvidenceCauseConsequencesSolutionsActivity2:Readforthemainideaandthestructure.Task2（任務(wù)二）:Read

for

detailsEvidence(para.1-2)The________isgettingwarmerandwarmer.Evidence1:Evidence2:Evidence3:EarthawarmingoceanandatmospheremeltingicerisingsealevelsclimatechangeEvidence4:adeadpolarbearCareful-readingRead

for

detailsCauses(para.3)naturalman-madeDefinitionHeatfromthesunentersthe__________andwarmsEarth’s__________as_________-waveradiation.FunctionKeepingEarth’swarmand_____________DefinitionPeopleproducehugeamountsof_________greenhousegasesbyburning_____________.AbigproblemMore________energyistrappedintheatmosphereandcausesEarth’ssurfacetemperatureto________quickly.habitableextrafossilfuelsatmospheresurfaceshortheatriseGreenhouseEffectReadthepartagainandcreateadiagramdescribinghowthegreenhouseeffectworks.DrawadiagramDiagramsareveryusefultoolsthatcanbeusedtobrainstormideas,mapoutprocesses,showcauseandeffectrelationships,explainanewideaorconcept,andsoon.Whenyoureadanessayaboutscientificissues,youcantrydrawingadiagram,whichwillnotonlyallowyoutovisualisetheproblemsmoreclearlybutalsocanhelpdemonstrateyourcreativethinkingandproblem-solving.Readparagraph3andcreateadiagramdescribinghowthegreenhouseeffectworks.HeatreleasedbackintospaceHeatreflectedbacktoEarth’ssurfaceReflectedsunlightAtmosphereSunlightRead

for

detailsConsequences(para.4)

Whataretheconsequencesoftheglobaltemperaturerise?consequences

notonly

.butalso

.extreme13.

and14.

causingdeathsandeconomiclossesextremeweathernaturaldisasterscausingseriousdamagecostinghumanlivesrainstormsheatwavesRead

for

detailssolutions(para.5)solutionsgovernmentsmake

policiestake

appropriate

actions

and

measuresindividualsreduce

our

“carbon

footprint”

by…educate

everyone

about

global

warmingIn2013,manypeople1.

(shock)byanewsphotoofadeadpolarbearwhichappearedtohavestarvedanddied.Expertsclaimedthatlowsea-icelevels2.

(cause)byclimatechangemeantthebearcouldnothuntsealsasbefore,soithadtotravelgreaterdistance3.

(find)food.Thenwhatiscausingtheincreaseintheglobalaveragesurfacetemperature?scientistsoftenmentionakeyclimateprocesscalledthe“greenhouseeffect”,4.

hastwocommonmeanings:the“natural”greenhousewereshockedcausedtofind課文語法填空whichPost-readingTask3（任務(wù)三）練習(xí)effectandthe“man-made”greenhouseeffect.The“man-made”greenhouseeffecthasnowbecome5.

bigproblem.Thereisstrongandcomprehensiveevidence6.

theriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisasters.Infact,newsreportsare7.

(frequent)broadcastaboutextremerainstormsandheatwaves8.

(cause)deathsandeconomiclosses.Weasindividualscanreduceour“carbonfootprint”by9.

(restrict)theamountofcarbondioxideourlifestylesproduce.Itis