【主题式备课】Unit3 Environmental Protection高中英语选择性必修第三册

新人教版选择性必修Book3主备人：成员：全体高二英语教师Unit3ENVIRONMENTALPROTECTIONEarthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.1.Whatcanyouseeinthepicture?2.Whatisthecauseofthisphenomenon?Globalwarming全球变暖meltingglacierTeachingobjectives:Bytheendofthisperiod,youwillbeableto1.knowabout

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

sealevelrise B.fireC.tsunami海啸D.floodE.heatwaveF.volcaniceruption火山爆发G.drought干旱H.stormsealevelrisefloodheatwavestormLead-in2.Whattypeofwritingisthispassage?A.Argumentativewriting（议论文）B.Narrativewriting（记叙文）C.Expositorywriting（说明文）D.Advertisingwriting（广告）本文是一篇说明文。说明文是客观说明事物的一种文体，以解说或介绍事物的形状、性质、成因、构造、功用、类别等为主要内容。说明文主要通过对客观事物或事理的介绍说明，达到以知识教人的目的，因此说明文以客观、准确为基本要求，强调科学性和客观性。Whatisthegraphabout?Whatinformationcanyougetfromit?thechangeintheGlobalSurfaceTemperaturebetween1920and2016.TemperatureAnomalyshowshowmuchthetemperaturehasrisenabovewhatitwouldusuallybeatabaselevel.Before-readingTask1（任务一）:Readforthemainideaandthestructure.Part1:(para.1-2)Part2:(para.3)Part3:(para.4)Part4:(para.5)Theevidence(证据)ofdramaticclimatechangethathadanimpactonEarth’secologyThecauses(原因)oftheincreaseintheglobalaveragesurfacetemperatureTheconsequences(结果)oftheriseintemperatureThesolutions(解决方法)toreducinggreenhousegasemissionsMatchthemainideawitheachpart.Fast-readingEvidenceCauseConsequencesSolutionsActivity2:Readforthemainideaandthestructure.Task2（任务二）: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课文语法填空whichPost-readingTask3（任务三）练习effectandthe“man-made”greenhouseeffect.The“man-made”greenhouseeffecthasnowbecome5.

bigproblem.Thereisstrongandcomprehensiveevidence6.

theriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisasters.Infact,newsreportsare7.

(frequent)broadcastaboutextremerainstormsandheatwaves8.

(cause)deathsandeconomiclosses.Weasindividualscanreduceour“carbonfootprint”by9.

(restrict)theamountofcarbondioxideourlifestylesproduce.Itis