Unit8lesson4课件冀教版英语八年级上册()

Unit8ProtectingtheenvironmentLesson4GlobalwarmingWhatkindofdisastersarethey?Doyouknowwhatmightcausethesedisasters?floodsdroughtsthemeltingoficebergsglobalwarmingReadandanalyseAnalysethestructureofthepassage.Theearthisgettinghotter.Wecallitglobalwarming.Whatmakesthishappen?Peopleburnthingslikegas,oil,andcoal.Theycutdowntreesandcreatealotofwaste.Thesearemajorreasonsforglobalwarming.problem+reasons全球变暖n.天然气n.石油n.煤砍伐树木制造大量垃圾...的主要原因Readthepassageagainandcompletethemindmap.Globalwarmingmajorreasonssolutioneffect•Burnthingslike________________.•___________downtrees•Create______________gas,oilandcoalCutalotofwasteReadandcompleteGlobalwarmingaffectseverythingontheplanet.It’slikegettingafever.Ifwehaveafewdegrees’increaseinbodytemperature,wefeelsick.Thesamegoesforourplanet.Theeffectsofglobalwarmingareserious.Forexample,thesnowandiceintheNorthPolearestartingtomelt.Thiscausesthesealeveltorise,whichcanleadtomorefloodsandstorms.effectsn.行星发烧适用于北极v.融化海洋水位上升导致n.洪水暴风雨•ThesnowandiceintheNorthPole___________________.•Thesealevelisrising,whichcanleadto___________.Globalwarmingmajorreasonssolutioneffectarestartingtomeltrising1.Ifwehaveafewdegreesincreaseinbodytemperature,wefeelsick.如果我们的体温升高几度，我们会感到不适。increasev.增加；增长

n.增加；增长(通常指数量、程度或范围的增加)相关短语：increasefrom...to...从……增加到……；increaseby增加了……；

increasein在某方面的增加；

increaseto增加到……；

increasewith随……增长。2.Theeffectsofglobalwarmingareserious.全球变暖的影响非常严重。effectn.影响；效果；结果haveaneffecton...对……有影响come/gointoeffect开始生效，开始实施takeeffect生效；起作用beineffect有效；在实施中e.g.Thenewpolicyhasaneffectontheeconomy.

新政策对经济产生了影响。Thenewpolicywillcomeintoeffectnextmonth.

新政策将在下个月开始生效。seriousadj.严重的；严肃的；重要的常见用法：beseriousabout对待……严肃；认真对待……

nothingserious不严重；没什么大问题seriouslyadv.严重地；严肃地；重要地常见用法：takesb./sth.seriously认真对待某人/某事seriouslyill病得很重

seriouslyhurt严重受伤e.g.Youshouldtaketheproblemseriously.你应该认真对待这个问题。2.Theeffectsofglobalwarmingareserious.全球变暖的影响非常严重。cause①v.

导致；造成；引起3.Thiscausestheoceans’waterleveltorise,whichcanleadtomorefloodsandstorms.这导致海洋水位上升，从而可能引发更多的洪水和暴风雨。e.g.Hecausedhisparentsmuchtrouble.

=Hecausedmuchtroubletohisparents.他给父母带来很多麻烦。Whathermothersaidyesterdaycausedhertostudyharder.

她母亲昨天的话使得她学习更加努力。causesthforsb=causesbsth给某人带来某事/物（多指麻烦）causesb/sthtodosth导致某人/某物做某事②n.

原因；理由；事业e.g.Wehavenocausetoquestionhishonesty.我们没有理由来质疑他的诚实。Worldpeaceisacauseweshouldallworkfor.

争取世界和平是一项我们都应该为之努力的事业。WatchavideoThankfully,wecanhelpslowdownglobalwarmingbytakingsomesimpleactions.Insteadofdriving,wecanchoosetowalkorbike.Turnoffdeviceswearen’tusinglikeTVsandlights.Anothergreatwaytohelpisbyplantingtreesinourcommunityanddoingother“green”activities.Justbymakingsomesmallchangesinourdailylives,wecanplayaroleinaddressingglobalwarming.solutionsadv.幸亏放慢，放缓n.行动，行为choosetodosth选择做某事choose-chose-chosen关闭turnon打开n.行动，行为日常生活在...方面发挥作用v.设法解决，演讲n.地址，演讲•Chooseto______________insteadofdriving.•Turnoff____________________________________________________________________.•

__________anddoother“green”

activities.Globalwarmingmajorreasonssolutioneffectwalkorbikedeviceswearen’tusinglikeTVsandlightsPlanttreesActivity2:ReadandjudgeReadthepassageinPart2andwritetrue(T)orfalse(F).1.Globalwarmingismainlycausedbynature.()2.Globalwarmingaffectseverythingontheplanet.()3.Plantingtreesisagreatwaytoslowdownglobalwarming.()FTT1.Useenergysourcessuchassolarandwindpower.2.Letpeoplearoundyouknowabouttheharmofglobalwarming.3.Takeshortershowerstosavewaterandenergyusedforheatingthewater.4.Chooseenvironmentally-friendlyproductswithlesspackaging5.Usethingsagainorrecyclethemforotherpurposes.6.Attendenvironmentalclubstolearnmoreabouttheenvironment.7.Trytoeatlessmeatandmorevegetables.Activity4:ThinkandtickWorkinpairs,thinkandtickthethingswecandotoslowdownglobalwarminginPart4.能源太阳能和风能环保产品Theearthisgettinghotter.Wecallit_____________.Therearesomereasons:peopleburnthingslike_________,__________,and___________.Theyalso___________treesandcreatealotof______________.Therearesomedamagesofglobalwarming.Forexample,snowandiceintheNorthPolearestartingto_______________andtheoceans’waterlevel____________.Buthowtosolvetheproblem?Wecanchooseto__________or______________insteadofdriving.Turnoff____________wearen’tusing.Wecanalsoplanttreesanddoother“green”___________.Let’smakesmall___________inourdailylives,andthenwecan____________inaddressingglobalwarming.globalwarminggasoilcoalcutdownwastemelttorisewalkbikedevicesactivitieschangesplayaroleTherearemanyotherenvironmentalproblems.Thinkandwriteaboutoneofthem.AWhatistheproblem?BWhatdoyouthinkarethecausesofthisproblem?CWhatareitseffects?DWhatshouldwedotosolvethisproblem?Thefollowingquestionsmayhelpyou:Thinkandwrite...的原因解决这个问题AWhatistheproblem?BWhatdoyouthinkarethecausesofthisproblem?CWhatareitseffects?DWhatshouldwedotosolvethisproblem?Sample:Plasticpollution.Peopleusetoomanyplasticbagsandbottles,anddon'trecyclethemproperly.Plasticwasteharmsseaanimalsandpollutestheenvironment.Weshouldusereusablebagsandbottles,andrecycleplasticwaste.Structure:

problem+reasons→effects→solutionsPlasticpollutionPlasticwasteis