九年级英语上册Unit2SavingtheEarthTopic2AlltheseproblemsareveryseriousSectionD2仁爱版.ppt

Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.,SectionD,仁爱版英语九年级上,Whatcanyoulearnformtheshortmovie?Waterisimportant.Becausehumans,animalsandplantscantlivewithoutwater.,Movie,Nearlythreefourthsoftheearthiscoveredwithwater.,waterontheearth,3/4,被覆盖,/nl/几乎、将近,Whilethereissomuchwateraroundtheworld,wehumansarestillshortofdrinkingwater.Sodoanimalsandplants.Doyouknowwhy?,beshortof缺乏,1.Whyisourearththirstywhenoftheearthiscoveredwithwater?Becauseabout97%ofthewaterontheearthisseawaterandwecantuseitforwateringplantsordrinkingdirectly.2.Whatkindofwatercanhumansdrinkanduse?Humanscanonlydrinkandusefreshwaterfromplacesincludingrivers,lakesandunderground.,()Althoughtheworldishungry,itiseventhirstier.Whilenearlyoftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Thisisbecauseabout97%ofthewaterontheearthisseawater.Sowecantuseitforwateringplantsordrinkingdirectly.Humanscanonlydrinkandusefreshwaterfromplacesincludingrivers,lakesandunderground.,1,Readandanswer.Howcanweavoidaseriouswatershortage?First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater.,()Howcanweavoidaseriouswatershortage?First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater.Scientistshavemadesomeprogressinthisfield.Today,somelargecitiesarereusingtheirwater.Butpeoplesneedforwaterisincreasingdaybyday.Westilldonthaveenoughwater.Whatelsecanwedo?,2,ReadParagraph2andmarkTorF.()Scientistshaventmadeanyprogressinthisfield.()Waterisreusednowhere.()Peoplesneedforwaterisincreasingdaybyday.,F,F,T,ListentoParagraph3andfillintheblanks,()Thesea_havethebestanswer.Thereis_waterinthesea.Butweneedto_thesalt_fromtheseawater.Thisisveryexpensive.Ifscientistscanfindcheaperwaystodoit,wecan_oftheshortageofwater.,3,seemsto,plentyof,take,away,solvetheproblem,Q:Howcanwechangeseawaterintofreshwater?Weneedtotakethesaltawayfromtheseawater.,EnjoyReading,beshortofontheearthusesthforsth/doingsthavoidsthmake(some)progressinthefielddaybydayseemtodosthplentyoftakeawaytheshortageof,1.缺乏2.在地球上3.用某物做某事4.避免某事5.取得（一些）进步6.在这个领域7.一天天8.似乎/好像做某事9.大量的10.带走、拿走11.的缺乏,Keyphrases,领域;场地,田地,1.2.3.4.5.6.7.8.9.10.11.,onebyoneyearbyyearstepbystep,一个接一个一年年一步步,Exercises,Ifwewanttousetheseawater,wemust_(拿走）thesaltfromtheseawater.Howcanwe_(避免)aseriouswatershortage?Weshould_(找到)waystoreusewater.Peoplesneedforwaterisincreasing_(一天天).Althoughtheworldishungry,itiseven_(更渴的)While_(几乎，差不多)oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.,takeaway,avoid,discover,daybyday,thirstier,nearly,Waterpollution,lessfreshwater,Weshouldprotectandsavewater.,Howtoprotectandsavewater?,Example:Passlaws(n.法律)againstwaterpollution.Collectandreusewastewater.5.6._,Turnoffthetapsintime,Takeashowerinsteadofabath,stopfrom,pourinto,turnoff,tap(水龙头),washclothes/vegetables,cleanthefloor,throwinto,Stopthefactoriesfrompouringwastewaterintorivers.,Dontthrowlitterintothewater,Afterwewashclothesorvegetables,wecanreusethewatertocleanthefloor.,Tosavewateristosavelife.,Dontletthelastdropofwaterbecomeourtears,Welearn:1.somewords:avoid,discover,thirsty,nearly,law2.somephrases:daybyday,beshortof3.somesentences:(1)Butpeoplesneedforwaterisincreasingdaybyday.(2)Whilenearlyoftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Wecan:1.Talkaboutwaysofsavingwater.2.Summarizeandusetheindefinitepronounandadverbcorrectly.3.Writeaproposal.,Summary,3.Writeaproposal(提议)aboutsavingwatertoallthestudent