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

12、untainsofrubbishandpollutesourlandandseas.Inordertoprotecttheenvironment,weneedtotakeproperaction.Weshouldbedifferentfrommanyconsumersandbecome“greenconsumers”.Thismeansthatweshouldonlybuyanduseproductsfriendlytotheenvironment.Weshouldalsorecycleasmanythingsaswecan.Wecanreusethingsforthesamepurposea

13、sbefore,orwecanusethemfornewpurposes.Ifwejustlearntoliveinnewanddifferentways,wecanmakeadifference.,19,Presentation,TheworldisindangerOurworldisindanger.Wemustdosomethingtoprotecttheenvironment.But,whatarethemainproblemsweface?ThegreenhouseeffectTheatmospherearoundtheEarthisnecessaryforalllivingthin

14、gs.Itisliketheglassofagreenhouse,lettingsunlightinandkeepingheatfromgettingout.Withoutit,theEarthwouldbethesameastheMooncoldandlifeless.Whenweburnfuelssuchaspetrolandcoal,weproduceagascalledcarbondioxide(CO2).Toomuchofthisgaspollutestheatmosphere,andcausesittokeepintoomuchheat.Asaresultofthegreenhou

15、seeffect,theEarthstemperatureisincreasing.Thiscausessealeveltorise,andinthefuturemaycausecitiestodisappear.,Task1:Readthefirstpartandmakethefollowingsentencesintocorrectorder.,Reading,Presentation,Readandfinishthefollowingtasks.,Task1:Readthefirstpartandmakethefollowingsentencesintocorrectorder.,()T

16、oomuchCO2pollutestheatmosphere.()Theatmospheredoesnotlettheheatout.()Theatmosphereletsthesunlightin.()Theatmospherekeepsintoomuchheat.()ThesunlightreachestheatmosphereoftheEarth.()ThegreenhouseeffecttakesplacetheEarthstemperatureincreases.()PeopleburnfuelssuchaspetrolandcoalandproducealotofCO2.,1,2,

17、3,4,6,5,7,Showtime,Saysomethingaboutthethreemainproblemspeoplefaceandtheireffects.,thegreenhouseeffect,cuttingdownforests,badhabits,Reading,Taskreadthesecondpartofthetextandcompletethediagram.,Cause,Effect1,Effect2,Effect3,Effect4,Wedestroynatureby_,downhugeareasofforests,_becomesworse.,Thehomesofth

18、eanimalsthatliveinourforestsaredestroyed.,Thesurfaceofthesoiliseasilydestroyedbyrain.,evenmoredamageisdoneto,cutting,Thegreenhouseeffect,_,_,_takeplaceand_theenvironment.,Floods,Reading,Readthethirdpartandfindoutthemainidea.,Badhabitscausepollution.Rubbishshouldbethrownawayinarightwayorweshouldusere

19、cyclingthings.,Reading,Readthelastparagraphandfindoutthemainidea.,Begreenconsumersandtrytobuyanduseproductsfriendlytotheenvironment.,ourworld/theEarth,TheatmospherearoundtheEarth,Replacetheitalicizedwordswithinformationfromthearticleonpage35.(P37),D1,DComprehension,fuelssuchaspetrolandcoal,Theincrea

20、singtemperature,Cuttingdowntrees,pollution,Readthearticleagainandcirclethecorrectanswers.(P37),D2,Thewritergivesanexampleofabadhabitthatcausespollution.Canyounamesomeotherbadhabitsthatcausepollution?(P37),D3,Changeandwashclotheseveryday.,wasteoffood,Spiteverywhere.,Alwaysdrivecarstootherplaces.,Forg

21、ettoturnofflightswhenweleavetheroom.,GroupworkI,Activity,Discussthequestionsbelowingroupsandthenreportyourresulttothewholeclass.Letsseewhichgroupisthebest!Whatotherbadhabitsdopeoplehaveintheirdailylives?Whatshouldwedotohelpprotecttheenvironment?,Ready?,Howgreenareyou?,GroupworkII,Activity,Trytofinis

22、hthefollowingtest.Letsseewhoisthegreenest!,Ready?,1.DoyourecycleA:newspapers?1B:tins?1C:plasticbags?22.Whenyoumakeashortjourney,doyouA:walkorcycle?3B:gobycar?0C:gobypublictransport?1,3.Whattypeofbagsdoyouuseforshopping?A:reusable(e.g.,basket)3B:reusedplastic1C:newplastic04.Howmanypiecesofelectricale

23、quipmentareusedinyourkitchen?A:10ormore0B:5to91C:below52,5.Doyoumakesurethatlightsandotherelectricalequipmentareswitchedoffwhennotneeded?A:nearlyalways2B:seldom1C:never06.Doyouusedisposablechopsticks?A:often0B:seldom1C:never2,7.Doyouusepapertissues?A:often0B:seldom1C:never28.Doyouusuallytake?A:abath0B:ashower1,Homework,Remembernewwordsandphrasesbyheartafterclass.2.ReadthearticlesinLearningEnglish.Themoreyouread,thefasterandbetteryoullunderstand.3.PreviewListeningonpage38.,沈阳市第七中学出品,录制：杨月沈阳市第七中学审核：刘文宇沈阳市沈河区教育研究中心许颖沈阳市第七中学,