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

unit2savingtheearth topic2alltheseproblemsareveryserious sectionc课件1 review 1 ofusknowshowtostopthebadbehaviour 2 iknockedonthedoorbut answered 3 someofthesebooksarebetterthan fillintheblanksusingsomething anything others nobody everyone anybody everywhere none other none nobody others 4 shewasdrivingthecarwithonehandandwipingthewindowwiththe 5 theyarebeautifulbutiamlookingfor useful 6 isthere youcandotohelpher other something anything 7 there re5000peoplelivinghereandalmost hashis herowncar 8 he sclevererthan iknow 9 i velooked butican tfindit everyone anybody everywhere whatcanwedotoprotectourenvironment inourdailylife weshouldfacemoreenvironmentalproblems canyousaysomethingaboutthem cities pollute healthproblems factories thelandandtheair dead inourdailylife weshouldfacemoreenvironmentalproblems canyousaysomethingaboutthem cutdown millionsof takeawaytheearth becomedesert 拿走 inourdailylife weshouldfacemoreenvironmentalproblems canyousaysomethingaboutthem oxygen aspecialkindofoxygencalled ozone o3 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 inourdailylife weshouldfacemoreenvironmentalproblems canyousaysomethingaboutthem co2carbondioxideincreasealot forma blanket theheatfromthesuncan tescape 二氧化碳 毛毯 毯子 渗出 逃跑 逃脱 causetheleveloftheseatorisecalled thegreenhouseeffect or globalwarming v 上升 起床 升起 温室效应 exercises fewertrees factorypollution trafficpollution theozonelayer morecarbondioxide canyoumatchthem choosesuitabletitlesforparagraphs2 6 thenwriteitdowninfrontofeachparagraph a trafficpollutionb factorypollutionc fewertreesd theozoneholee morecarbondioxide theearthis4 6billionyearsold wehumanshavelivedontheearthforonly35000years butduringthisperiod wehavechangedourplanetalotinmanyways somethingswe vedoneareverygoodfortheearthwhilesomearebad allovertheworld peoplehavecutdownmillionsoftrees whenitrainsorwhenthewindblows theearthistakenaway forestshavebecomedeserts somanykindsofanimalsandplantsaredisappearing fewertrees inbigcities carsandbuseshavepollutedtheair nowmanypeopleincitieshavehealthproblems factorieshavealsopollutedthelandandthewater asaresult manyriversandlakesarenowdead aroundtheearth there saspecialkindofoxygencalled ozone o3 itisimportanttotheearth butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly thisisverydangerousbecausethiskindofradiationcancausecancer trafficpollution factorypollution theozonelayer carbondioxide co2 intheairhasincreasedalot itmainlycomesfromburningoil coalandwood thishasformedablanketaroundtheearth theheatfromthesuncan tescapesothetemperatureisrising thisiscalled thegreenhouseeffect itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange alltheseproblemsareveryserious sowemustdosomethingnow morecarbondioxide retellit carsandbusespolluteair healthproblems pollutelandandwater riversandlakesdead harmfulradiationreachestheearth causecancer factorypollution ozonehole moreco2 2surftheinternettocollectmoreinformationaboutenvironmentalproblemsandeffects thendiscusstheinformationingroupsandtakenotes 3 combinethekeypointsin1cand2toformashortpassageandpayattentiontotheproperlinkingwords asweallknow waterpollutionisbecomingmoreandmoreserious somefactoriespourwastewaterintotherivers asaresult itmakesthewaterdirtyandsmellterrible mostoffishinthewaterhavediedandwecan tswiminthewater waterisveryimportanttohumanbeings soweshoulddoourbesttoprotectandsaveit luckily ourgovernmentistakingmeasurestoprotectthewaterfrompollution youcanwriteitlikethis summary 1 somewords hole form rise2 somephrases takeaway referto3 somesentences alltheseproblemsareveryserious sowemustdosomethingnow welearn 1 talkabouttheharmofpollution 2