九年级英语上册 Unit 2 Topic 2 All these problems are very serious Section C课件 （新版）仁爱版.ppt

unit2savingtheearthtopic2alltheseproblemsareveryserious sectionc 1 ofusknowshowtostopthebadbehavior 2 iknockedonthedoorbut answered 3 listen isknockingatthedoor 4 isdifficultifyouputyourheartintoit 5 isready let sbegin 6 bequiet ihave importanttotellyou 7 isthere youcandotohelpher 8 there re5000peoplelivinghereandalmost hashis herowncar 9 i mnewhere idon tknow here 10 i velookedformypen butican tfinditanywhere fillintheblanksusingsomething anything everything nothing nobody everyone anybody everywhere none someone review none nobody someone everything something anything everyone anybody everywhere nothing whatkindofenvironmentdoyouwant whatshouldwedotoprotectourenvironment inourdailylife weshouldfacemoreenvironmentalproblems whatarethey doyouknow cities pollute healthproblems factories thelandandthewater dead cutdown millionsof takeawaytheearth becomedeserts 拿走 oxygen aspecialkindofoxygencalled ozone o3 臭氧 oxygen 氧气 averybigholeintheozonelayer toomuchharmfulradiationfromthesun 臭氧层 放射 放射物 n 洞 坑 v 出现 形成n 种类 形式 co2carbondioxideincreasealot forma blanket theheatfromthesuncan tescape 二氧化碳 毛毯 毯子 渗出 逃跑 逃脱 called thegreenhouseeffect causetheleveloftheseatorise 温室效应 v 上升 起床 升起 alltheseproblemsareveryserious sowemustdosomethingnow fewertrees factorypollution trafficpollution theozonelayer morecarbondioxide canyoumatchthem choosesuitabletitleforeachparagraph thenwriteitdowninfrontofeachparagraph allovertheworld peoplehavecutdownmillionsoftrees whenitrainsorwhenthewindblows theearthistakenaway forestshavebecomedeserts somanykindsofanimalsandplantsaredisappearing fewertrees a trafficpollutionb factorypollutionc fewertreesd theozoneholee morecarbondioxide inbigcities carsandbuseshavepollutedtheair nowmanypeopleincitieshavehealthproblems trafficpollution a trafficpollutionb factorypollutionc fewertreesd theozoneholee morecarbondioxide factorieshavealsopollutedthelandandthewater asaresult manyriversandlakesarenowdead factorypollution a trafficpollutionb factorypollutionc fewertreesd theozoneholee morecarbondioxide aroundtheearth there saspecialkindofoxygencalled ozone o3 itisimportanttotheearth butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly thisisverydangerousbecausethiskindofradiationcancausecancer theozonelayer 直接地 a trafficpollutionb factorypollutionc fewertreesd theozoneholee morecarbondioxide carbondioxide co2 intheairhasincreasedalot itmainlycomesfromburningoil coalandwood thishasformedablanketaroundtheearth theheatfromthesuncan tescapesothetemperatureisrising thisiscalled thegreenhouseeffect itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange morecarbondioxide a trafficpollutionb factorypollutionc fewertreesd theozoneholee morecarbondioxide 2 whatdoesourplanetmeanhere a thesun b mars c themoon d theearth theearthis4 6billionyearsold wehumanshavelivedontheearthforonly35000years butduringthisperiod wehavechangedourplanetalotinmanyways somethingswehavedoneareverygoodfortheearthwhileothersarebad 3 inthepassage blanketrefersto a carbondioxidearoundtheearthb theozonelayerintheskyc theforestsaroundtheworldd pollutionallovertheworld carbondioxide co2 intheairhasincreasedalot itmainlycomesfromburningoil coalandwood thishasformedablanketaroundtheearth theheatfromthesuncan tescapesothetemperatureisrising thisiscalled thegreenhouseeffect itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange morecarbondioxide 4 theworditinparagraph5refersto a co2b o3c o2d h2o aroundtheearth there saspecialkindofoxygencalled ozone o3 itisimportanttotheearth butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly thisisverydangerousbecausethiskindofradiationcancausecancer theozonelayer 5 whatisthebesttitleforthispassage environmentproblemsb pollutionontheearthc hopeforthefutured thegreenhouseeffect writedownonlythekeywordswhentakingnotes 1ccompletethenotesaccordingto1a carsandbusespolluteair healthproblems pollutelandandwater riversandlakesdead harmfulradiationreachestheearth causecancer factorypollution ozonehole moreco2 welearn 1 somewords hole form rise2 somephrases takeaway referto3 somesentences alltheseproblemsareveryserious sowemustdosomethingnow wecan talkabouttheharmofpollution