内蒙古乌海市第二十二中学九年级英语上册 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 someofthesebooksarebetterthan 4 shewasdrivingthecarwithonehandandwipingthewindowwiththe 5 theyarebeautifulbutiamlookingfor useful 6 isthere youcandotohelpher 7 there re5000peoplelivinghereandalmost hashis herowncar 8 he sclevererthan iknow 9 i velooked butican tfindit fillintheblanksusingsomething anything others nobody everyone anybody everywhere none other review none nobody others other something anything everyone anybody everywhere whatcanwedotoprotectourenvironment giveaspeech 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 fewertrees factorypollution trafficpollution theozonelayer morecarbondioxide canyoumatchthem 1areadandunderstand lookatthefollowingpicturesandpredictthemainideaofthepassage choosesuitabletitlesforparagraphs2 6 thenwriteitdowninfrontofeachparagraph theearthis4 6billionyearsold wehumanshavelivedontheearthforonly35000years butduringthisperiod wehavechangedourplanetalotinmanyways somethingswe vedoneareverygoodfortheearthwhilesomearebad allovertheworld peoplehavecutdownmillionsoftrees whenitrainsorwhenthewindblows theearthistakenaway forestshavebecomedeserts somanykindsofanimalsandplantsaredisappearing fewertrees a trafficpollutionb factorypollutionc fewertreesd theozoneholee morecarbondioxide inbigcities carsandbuseshavepollutedtheair nowmanypeopleincitieshavehealthproblems factorieshavealsopollutedthelandandthewater asaresult manyriversandlakesarenowdead aroundtheearth there saspecialkindofoxygencalled ozone o3 itisimportanttotheearth butnowairpollutionisdestroyingitandmakingaverybigholeintheozonelayer toomuchharmfulradiationfromthesunpassesthroughtheholeandreachestheearthdirectly thisisverydangerousbecausethiskindofradiationcancausecancer trafficpollution factorypollution theozonelayer 直接地 carbondioxide co2 intheairhasincreasedalot itmainlycomesfromburningoil coalandwood thishasformedablanketaroundtheearth theheatfromthesuncan tescapesothetemperatureisrising thisiscalled thegreenhouseeffect itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange alltheseproblemsareveryserious sowemustdosomethingnow morecarbondioxide 1bread1aandcompletethefollowingtasks 2 whatdoesourplanetmeanhere a thesun b mars c themoon d theearth 3 inthepassage blanketrefersto a carbondioxidearoundtheearthb theozonelayerintheskyc theforestsaroundtheworldd pollutionallovertheworld 4 theworditinparagraph5refersto a co2b o3c o2d h2o 5 whatisthebesttitleforthispassage environmentproblemsb pollutionontheearthc hopeforthefutured thegreenhouseeffect 1areadandunderstand writedownonlythekeywordswhentakingnotes 1ccompletethenotesaccordingto1a 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 welearn 1 somewords hole form rise2 somephrases takeaway referto3 somesentences alltheseproblemsareveryserious sowemustdosomethingnow wecan 1 talkab