新人教版高中英语选修六 Unit4 Writing PPT课件.ppt

高中英语选修(模块）6-4.6,Writing,AnswerkeyforExercise1:Twoofthemostcommonanddangerouslitter:cigarettebuttsandplasticbags.,Cigarettebuttsaresmallbutbadfortheenvironment:over1,600billioncigarettesaresmokedeachyearandlargequantitiesofbuttsarethrownaway;Buttscontaintoxicchemicals;Decreasethequalityofwater;Endangerplantsandanimals.,Plasticbagslitterisadangertotheenvironment:Wasteofnon-renewableresources;Lastfrom20to1,000yearsintheenvironment;Killuptoonemillionseabirds,100,000seamammalsandcountlessfisheveryyear.,Tomssolutions:1)Putthemintherubbishbin.2)Nottoletplasticbagsbecomelitter.3)Itwouldbebetteriftheyusedfewer.4)Recycledthem.5)Nottosmoke.6)Notuseplasticbagsatall.,AnswerkeyforExercise2(P67),Cigarettebuttsandplasticbagsareaseriousenvironmentalproblem.,Cigarettebuttsaresmallbutbadfortheenvironment.,1.Over1,600billioncigarettesaresmokedeachyearinChina.Manyofthesebecomelitter.,2.4.5trillionbuttsarelitteredeveryyearintheworld.3.Buttsareugly.4.Buttscontaintoxicchemicals;Decreasethequalityofwater;Endangerplantsandanimals.5.Buttstakeupto5yearstobreakdown,sothetoxicchemicalsadduptoagreatamount.,Plasticbagsareadangertotheenvironment.,Plasticbagsaremadefromnon-renewableresources.Iftheyarenotrecycled,theseresourcesarelosttous.InChina,2billionplasticbagsareusedeveryday.Manyofthesebecomelitter.,3.Plasticbagslastfrom20to1000yearsintheenvironment.4.Theycantravellongdistancesintheairandwater.Theyareinrivers,parks,beachesandoceans.5.Plasticbagskilluptoonemillionseabirds,100,000seamammalsandcountlessfisheachyearworldwide.,6.Aftertheanimalbreaksdown,theplasticbagbecomesfreeandcankillanotheranimal.,Theenvironmentwouldbelesspollutedifwecleanedupcigarettebuttsandplasticbags.Thebestsolutionwouldbenottosmokeoruseplasticbagsatall.,WritingTask(P67)Writingtips:Step1:Writeoutthethesisstatement.(pointofview)Step2:Writeoutthetopicsentenceofthefirstbodyparagraph.Step3:Givethesupportingpointsanddetailsaboutthefirstsubtopic.,Step4:Writeoutthetopicsentenceofthesecondbodyparagraph.Step5:Givethesupportingpointsanddetailsaboutthesecondsubtopic.(morebodyparagraphs.),Nowchooseatopicfromthebelowlistthatyoufeelstronglyabout.Makenotesonyourtopicusingheadingssimilartothoseinthetableabove.UseTomsessayasamodeltowriteyourown.,Asamplelistofenvironmenttopics:airpollution,noise,soilerosion,waterpollution,litterclassification,desertification,makegreenbyplantingtrees,Asampleversion:TheEnvironmentalEffectsofFossilFuelsThereisnodoubtthatfossilfuelsbringalotofgoodtous.Butdoyouknowthatmanyoftheenvironmentalproblemsourcountryfacestodayresultfromourfossilfueldependence.,Theenvironmentfacesairpollution,globalwarming,acidrain,andseveralotherveryseriousproblemsbecauseofouruseoffossilfuels.Overthelast150years,burningoffossilfuelshasresultedinmorethan25percentincreaseincarbondioxideinouratmosphere.,Carbondioxideisoneofthemainfactorsinglobalwarmingwhichisnegativelyaffectingeveryone.Fossilfuelsalsoaffectwaterpollution,landpollution,andthermalpollution(heatpollution).,Coalminingisoneofthecausesofpollutionintheenvironment.Aftertheminingiscompleted,thelandwillremainbarren.Materialsotherthancoalarealsobroughttothesurfaceinthecoalminingprocess,andtheseareleftassolidwastes.,Theproduction,transportation,anduseoffossilfuelsar