牛津深圳版课件.ppt

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1、ChapterTwoProtectingourenvironmentOurearthishurt.Why?PollutionTheairpollution.Thewaterpollution.Whocanhelpus?Treesarepollutionfighters!Howcantreeshelpus?Whatcanwegetfromtrees?AWhatdoyouknowabout…Brainstorming:Treesareveryimportantinourdailylife.Whatcanwegetfromtrees?use--eat--drink-

2、-wear--pencils,chopsticks,tables,chairs,paperfruits,nutstea(leaves),coffee(beans)flowers,shoes(rubber)Howlongdotheylive?Matchtheitemsontheleftwiththeaverageagesontheright.amiceⅰ75yearsbpinetreesⅱ14yearsccatsⅲ25yearsddolphinsⅳ1,200yearsepeopleⅴ2years2.Pollutionmeanstheprocessofmaking

3、thingsdirtyandunhealthy.Whichtypeofpollutiondotreeshelpfight?a.airpollutionc.noisepollutionb.waterpollutiond.alloftheabove3.Whichofthefollowingcomefromtrees?a.applesc.cottone.teab.beansd.oilf.rubber4.Thebest-knownplantsinShenzhenareazaleas.Thesesweet-smellingflowersareknownastheflow

4、ersofShenzhenCity.Whichpictureshowsazaleas?最著名的芳香的1The‘pollutionfighters’areprobablyscientists.Fewusefulthingscomefromtrees.Treesgiveoutharmfulgases.Treescanpassinformationtooneanother.FFFTuseful<>uselessharmful<>harmlessbeharmfulto对……有害BLookandthinkPollutionfightersMindmapoftheconv

5、ersation(Mainideas)Section1-Section2-Section3-Section4-TreearethebiggestandoldestlivingthingsonEarth.Wemustthanktreesforgivingusalot.Treesprovideusoxygenandtheycancooltheairandcleanit.Scientistsareonlybeginningtounderstandtrees.Wedon’tknowhowtreescommunicatewithoneanther.Treesareing

6、reatdangerbecausewedestroymillionsofthem.1.beknownas…2.giveout…3.passsth.tosb.4.collectsomefactsfor5.aclassprojectonpollution6.interviewsb.about…7.beinterestedin…8.livingthings1.被认做…2.释放出…3.把某物传给某人4.为…收集事实5.一个关于污染的班级课题6.就某事访问某人7.对…感兴趣8.生物Phrases9.onEarth10.beusefulfor…11.forexample1

7、2.ontheendof…13.comefrom14.enjoybreathingfreshair15.thank…for…16.airconditioners9.在地球上10.对…有用11.例如12.在…的末端13.来自14.享受呼吸新鲜空气15.为某事感谢某人16.空调机Phrases17.dothejobof…18.knowalotabout…19.warnone’sneighbours20.produceachemical21.tastebad22.eachother/oneanother23.communicatewithsb.24.beingrea

8、tdanger17.做…的工作18.认