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1、2023/5/18仁爱九年级上册第二单仁爱九年级上册第二单元元Unit2Topic2SectionD What can you learn form the short movie?Waterisimportant.Becausehumans,animalsandplantscantlivewithoutwater.MovieNearlythree fourths of the earth is covered with water.water on the earth3/4被被覆盖覆盖/nl/几乎、将近几乎、将近Whilethereissomuchwateraroundtheworld,we
2、humansarestillshortofdrinkingwater.Sodoanimalsandplants.Doyouknowwhy?be short of 缺乏缺乏1.Whyisourearththirstywhenoftheearthiscoveredwithwater?Becauseabout97%ofthewaterontheearthisseawaterandwecantuseitforwateringplantsordrinkingdirectly.2.Whatkindofwatercanhumansdrinkanduse?Humanscanonlydrinkandusefre
3、shwaterfromplacesincludingrivers,lakesandundergroundunderground.()Althoughtheworldishungry,itiseventhirstier.Whilenearlyoftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Thisisbecauseabout97%ofthewaterontheearthisseawater.Sowecantuseitforwateringplantsordrinkingdirectly.Humanscanonlydrinka
4、ndusefresh waterfromplacesincludingrivers,lakesandunderground.Readandanswer.Howcanweavoidaseriouswatershortage?FirstFirst,weshouldsavewaterandnotwasteit.SecondSecond,weshouldprotectourwaterresourcesandnotpollutethem.ThirdThird,weshoulddiscoverwaystoreusewater.()How can we avoid a serious water short
5、age?First,we should save water and not waste it.Second,we should protect our water resources and not pollute them.Third,we should discover ways to reuse water.Scientists have made some progress in this field.Today,some large cities are reusing their water.But peoples need for water is increasing day
6、 by day.We still dont have enough water.What else can we do?ReadParagraph2andmarkTorF.()Scientistshaventmadeanyprogressinthisfield.()Waterisreusednowhere.()Peoplesneedforwaterisincreasingdaybyday.FFTListen to Paragraph3 and fill in the blanks()The sea_ _ have the best answer.There is _ _water in the
7、 sea.But we need to _the salt _from the sea water.This is very expensive.If scientists can find cheaper ways to do it,we can _ _ _of the shortage of water.seemstoplentyoftakeawaysolve theproblemQ:How can we change sea water into fresh water?We need to take the salt away from the sea water.EnjoyReadi
8、ngbe short ofon the earthuse sth for sth/doing sthavoid sthmake(some)progressin the fieldday by dayseem to do sthplenty of take away the shortage of1.缺乏缺乏2.在地球上在地球上3.用某物做某事用某物做某事4.避免某事避免某事5.取得（一些）进步取得（一些）进步6.在这个领域在这个领域7.一天天一天天8.似乎似乎/好像做某事好像做某事9.大量的大量的10.带走、拿走带走、拿走11.的缺乏的缺乏领域领域领域领域;场地场地场地场地,田地田地田地田地1
9、.2.3.4.5.6.7.8.9.10.11.one by one year by yearstep by step一个接一个一年年一步步1.Ifwewanttousetheseawater,wemust_(拿拿走）走）thesaltfromtheseawater.2.Howcanwe_(避免避免)aseriouswatershortage?3.Weshould_(找到找到)waystoreusewater.4.Peoplesneedforwaterisincreasing_(一一天天天天).5.Althoughtheworldishungry,itiseven_(更渴的更渴的)6.While
10、_(几乎，差不多几乎，差不多)oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.takeawayavoiddiscoverdaybydaythirstiernearlyWaterpollutionlessfreshwaterWe should protect and save water.How to protect and save water?Example:1.Passlaws(n.法律法律)againstwaterpollution.2.Collectandreusewastewater.3.4.5.6.7._Tur
11、n off the taps in timeTake a shower instead of a bathstopfrom,pourinto,turn off,tap(水龙头),wash clothes/vegetables,clean the floor,throwintoStop the factories from pouring waste water into rivers.Dont throw litter into the waterAfter we wash clothes or vegetables,we can reuse the water to clean the fl
12、oor.Welearn:1.somewords:avoid,discover,thirsty,nearly,law2.somephrases:daybyday,beshortof3.somesentences:(1)Butpeoplesneedforwaterisincreasingdaybyday.(2)Whilenearlyoftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Wecan:1.Talkaboutwaysofsavingwater.2.Summarizeandusetheindefinitepronounandadverbcorrectly.3.Writeaproposal.Summary3.Writeaproposal(提议提议)aboutsavingwatertoallthestudentsinyourschool.Mydearfriends,Waterisveryimportanttohumanbeings.Letsdosomethingtoprotectandsaveit.First,_.Second,_.Third,_.Letstryourbesttosavewaterandourplanet._Homework