3月31日-辽宁省沈阳市2020届九年级下学期英语在线课堂课件(共39张PPT).pptx
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1、初中英语九年级,Theenvironment,主讲教师:指导教师:,concernatmospheretemperatureconsumerguessgreenlifelessfuel,n.担心;忧虑n.大气层n.温度;气温n.消费者v.猜测adj.环境保护的;赞成环境保护的adj.无生命的;无生物成长的n.燃料,Words,coalresultincreasesealeveldestroynaturesurfacesoilfloodhabit,n.煤n.结果v.(使)增长;增多;增加n.海平面v.摧毁;毁灭n.自然界;大自然n.表面;表层n.土壤n.洪水;水灾n.习惯,Words,prope
2、rfriendlyrecyclepurposegreenhouseeffectindangerasaresultofresultinmountainsoftakeactionmakeadifference,adj.正确的;恰当的adj.无害的v.回收利用n.目的;用途温室效应在危险中由于造成;导致许多;大量采取行动有作用;有影响,Words,words,theairaroundtheEarth,atmospheren.,大气层,words,Thisrobotcanplaythepiano,butitis.(withoutlife),adj.无生命的;无生物生长的,alifelessplanet
3、没有生物的行星,lifeless,words,greenhousen.温室,words,n.温室效应,words,Smokingisabad.,habit,n.习惯,words,floodn.,洪水,words,Ourbadhabitsmountainsofrubbish.,v.产生,大量工作,mountainsofwork,resultin,WhathasLodone?WhatdidHitellLotodo?DoesLounderstandwhatHimeant?WhatdidHimeanwhenhetoldLotobegreener?,Hehaspaintedhimselfgreen.,H
4、etoldLotobegreener.,No,hedoesnt.,Gettingready,Lookatthecartoonandanswer:,HemeantthatLoshouldcaremoreabouttheenvironment.,Leadin,Thereisanatmosphere.ItcontrolsHowever,wearepollutingThegasescausetheatmosphereTheEarthisgettingWecallthis,AthegreenhouseeffectBtheEarthwithharmfulgasesCwarmerandwarmerDtoke
5、epintoomuchheatfromtheSunEaroundtheEarthFtheEarthstemperature,A,B,Matchthesentences,Presentation,Whatistheresultofthegreenhouseeffect?Ingroups,discussthiswithyourclassmates.,Thegreenhouseeffectresultsin:polaricemeltingandtheriseofsealevelshurricanes(飓风)andotherstormsarelikelytohappenmorefrequentlyas
6、wellasfloodsanddroughts(旱灾)freshwaterwillbelessavailablesomediseasesspreadfaster,Lookatthepictures,thetitle,theintroductionandthesub-headingsofthearticleonpage35.Thenanswerthequstionsbelow.,Beforeyouread,Theworldisindanger,Beforeyouread,Whatisthearticlemainlyabout?Whatproblemsdoesthearticlediscuss?A
7、consumerissomeonewhobuysandusesthings.Canyouguesswhata“greenconsumer”is?,Environmentalproblems.,Thegreenhouseeffect,cuttingdownforestsandbadhabits.,A“greenconsumer”issomeonewhoonlybuysandusesthingsfriendlytotheenvironment.,Beforeyouread,Readandanswerthequestions.,Presentation,Lookatthearticleonpage3
8、5andchoosethebestanswer.,Thearticleisprobablyfroma(n)_.aadvertisementbposterabouttheEarthHourcenvironmentalsciencebookdcomicbook,c,TheworldisindangerOurworldisindanger.Wemustdosomethingtoprotecttheenvironment.But,whatarethemainproblemsweface?ThegreenhouseeffectTheatmospherearoundtheEarthisnecessaryf
9、oralllivingthings.Itisliketheglassofagreenhouse,lettingsunlightinandkeepingheatfromgettingout.Withoutit,theEarthwouldbethesameastheMooncoldandlifeless.Whenweburnfuelssuchaspetrolandcoal,weproduceagascalledcarbondioxide(CO2).Toomuchofthisgaspollutestheatmosphere,andcausesittokeepintoomuchheat.Asaresu
10、ltofthegreenhouseeffect,theEarthstemperatureisincreasing.Thiscausessealeveltorise,andinthefuturemaycausecitiestodisappear.CuttingdownforestsEveryyear,wedestroynaturebycuttingdownhugeareasofforests.ThismakesthegreenhouseeffectworsebecausetreestakeinCO2andproduceoxygen.Cuttingdowntreesalsodestroystheh
11、omesoftheanimalsthatliveinourforests,andcausesthesurfaceofthesoiltobeeasilydestroyedbyrain.Thiscanresultinfloodsandevenmoredamagetotheenvironment.,Readaftertherecording,18,BadhabitsManyofourhabitscausepollution.Peopleoftenusethingsonceandthenthrowthemaway,orleavethemonthegroundaslitter.Thiscreatesmo
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