Unit2SavingtheearthTopic2SectionD课件仁爱科普版（2012）英语九年级上册

Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.SectionD学习目标一、掌握以下单词：avoid,discover,thirsty,nearly,law等。二、掌握以下短语:daybyday,beshortof等。三、谈论水资源的问题，号召大家节约用水。四、复习不定代词和副词的用法。ReviewIndefinitePronounandAdverb_______ofuslikespollution.Don’tspit___________inpublic._________shouldcareforwildanimalsandplantmoretrees.Weshoulddo___________wecantoprotecttheenvironment.NoneanywhereEveryoneeverythingGrammarReviewthingbodyonewheresomeanyeverynosomethingsomebodysomeonesomewhereanythinganybodyanyoneanywhereeverythingeverybodyeveryoneeverywherenothingnobodynowherenoone/none不定代词和副词用法1:1.不定代词充当句子的主语时，其后的谓语动词用单数形式。①Everythingbeginstogrowwhenspringcomes.②Iseveryoneheretoday?③EverybodyishereexceptTom.用法2:2.adj修饰不定代词要后置。①Thereissomethingwrongwithmyeyes.②Canyoutellsomethinginteresting?③Wouldyoulikesomethingtoeat?用法3:3.something,somebody,someone通常用于肯定句;anything,anyone,anybody通常用于否定句、一般疑问句。①Hefoundsomethinginteresting.②Doyouhaveanythingtosay?③Ididn’tmeetanybodyonthe

island.用法4:4.在表示请求、邀请、提建议和希望得到对方肯定答复的疑问句中，也用something，someone，somebody等①Wouldyoulikesomethingtoeat？②Wouldyoulikesomethingtodrink？ExercisesA:Lookintotheforest!Thereis__________movinginthetrees.B:Butwecan’tsee__________.A:

_____?Theremustbe___________

wrongwithyoureyes.B:

_______ofushas

________wrongwithoureyes.It’syours!A:Isee

________walkingintheforest.B:Somebody?Ithink

_______

wouldliketowalkinsuchaplace.A:No,Ithink_________

exceptyouwouldliketowalkinit.somethinganythingNothingsomethingNoneanythingsomebodynobodyanybody用不定代词或不定副词填空Review______aresult结果,alotofrichlandhaschanged______desert.Treescanstopthewindfrom________theearth_____.Weshouldn’tleaverubbish________________.Alltheseproblemsareveryserious,_____wemustdosomethingnow.Functionsinto变为blowingaway吹走hereandthere到处soAsWhatcanyouswallowthatcanalsoswallowyou?什么东西，你能吞噬，同时也能吞噬你？GuessariddlewaterNearly¾oftheearthiscoveredwithwater.About97%ofthewaterontheearthisseawater./ˈnɪəli/Humanscanonlydrinkandusefreshwaterfromplacesincludingrivers,lakesand...undergroundFactoriespourwastewaterintotherivers.Watershortageisaseriousproblem.wearestillshortofdrinkingwater/ˈʃɔː(r)tɪdʒ/Howcanweavoidaseriouswatershortage?/əˈvɔɪd/1aReadthepassageandputthefollowingparagraphsinthecorrectorder.()Theseaseemstohavethebestanswer.Thereisplentyofwaterinthesea.Butweneedtotakethesaltawayfromtheseawater.Thisisveryexpensive.Ifscientistscanfindcheaperwaystodoit,wecansolvetheproblemoftheshortageofwater.()Howcanweavoidaseriouswatershortage?First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater.Scientistshavemadesomeprogressinthisfield.Today,somelargecitiesarereusingtheirwater.Butpeople’sneedforwaterisincreasingdaybyday.Westilldon’thaveenoughwater.Whatelsecanwedo?()Althoughtheworldishungry,itiseventhirstier.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Thisisbecauseabout97%ofthewaterontheearthisseawater.Sowecan’tuseitforwateringplantsordrinkingdirectly.Humanscanonlydrinkandusefreshwaterfromplacesincludingrivers,lakesandunderground./rɪˈsɔːs//dɪˈskʌvə(r)//ˌriːˈjuːz/ReadPar.1andanswer.Althoughtheworldishungry,itiseventhirstier.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Thisisbecauseabout97%ofthewaterontheearthisseawater.Sowecan’tuseitforwateringplantsordrinkingdirectly.Humanscanonlydrinkandusefreshwaterfromplacesincludingrivers,lakesandunderground.1.Whyisourworldthirstywhen¾oftheearthiscoveredwithwater?/ˈθɜː(r)sti/ReadPar.1andanswer.Althoughtheworldishungry,itiseventhirstier.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Thisisbecauseabout97%ofthewaterontheearthisseawater.Sowecan’tuseitforwateringplantsordrinkingdirectly.Humanscanonlydrinkandusefreshwaterfromplacesincludingrivers,lakesandunderground.2.Whatkindofwatercanhumansdrinkanduse??Howcanweavoidaseriouswatershortage?First,weshouldsavewaterandnotwasteit.ReadPar.2andanswer./rɪˈsɔːs//dɪˈskʌvə(r)//ˌriːˈjuːz/Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater.1.Whatwillbethebestwaytosolvetheprobleminthefutureinthepassage?Theseaseemstohavethebestanswer.Thereisplentyofwaterinthesea.Butweneedtotakethesaltawayfromtheseawater.Thisisveryexpensive.Ifscientistscanfindcheaperwaystodoit,wecansolvetheproblemoftheshortageofwater.ReadPar.3andanswer.Takethesaltawayfromtheseawater.Doyouknowanyotherwaystosolvetheproblem?Whatarethey?2Discussingroupsdifferentwaysofprotectingandsavingwater.Writedownthekeyinformation.1.Passlaws(n.法律)againstwaterpollution.2.Collectandreusewastewater.3.Turnoffthetapsintime.4.Don’tthrowlitterintothewater5.Stopthefactoriesfrompouringwastewaterintorivers.6.Afterwewashclothesorvegetables,wecanreusethewatertocleanthefloor./lɔː/Althoughtheworldishungry,itiseventhirstier.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Thisisbecauseabout97%ofthewaterontheearthisseawater.Sowecan’tuseitforwateringplantsordrinkingdirectly.Humanscanonlydrinkandusefreshwaterfromplacesincludingrivers,lakesandunderground.

Readandunderstand.Howcanweavoidaseriouswatershortage?First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater.Scientistshavemadesomeprogressinthisfield.Today,somelargecitiesarereusingtheirwater.Butpeople’sneedforwaterisincreasingdaybyday.Westilldon’thaveenoughwater.Whatelsecanwedo?Theseaseemstohavethebestanswer.Thereisplentyofwaterinthesea.Butweneedtotakethesaltawayfromtheseawater.Thisisveryexpensive.Ifscientistscanfindcheaperwaystodoit,wecansolvetheproblemoftheshortageofwater.Readandunderstand.句子翻译：1.Althoughtheworldishungry,itiseventhirstier.

虽然世界是饥饿的，但是他更渴。2.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.

尽管地球差不多四分之三都被水覆盖，我们仍然缺少饮用水。3.Howcanweavoidaseriouswatershortage?

我们怎样才能办拒绝严重的水短缺?句子翻译：4.Butpeople’sneedforwaterisincreasingdaybyday.

但是人们对水的需求一天一天的增长。5.Theseaseemstohavethebestanswer.

大海似乎是最好的答案。6.Butweneedtotakethesaltawayfromtheseawater.

但是我们需要将海水淡化掉。Keypoints1.Whilenearly¾oftheearthiscoveredwith

water,wearestillshortofdrinkingwater.becoveredwith:被...所覆盖Thehouseiscoveredwithsnow.Thetableiscoveredwithatablecloth.Keypoints2.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.short:adj.短的；短缺的shortage:n.不足;缺少;短缺beshortof:短缺theshortageof:...的短缺Weareshortofwater.Thereisashortageofwater.Keypoints3.Howcanweavoidaseriouswatershortage?avoidv．防止，避免avoidableadj.可以避免的短语：avoiddoingsth.避免做某事她总是躲避我的目光。Shekept________myeyes.Itriedtoavoid________(meet)himbecausehealwaysboredme.我们幸而逃过一场事故。__________________________________________Luckily,wewereabletoavoidanaccident.avoidingmeetingKeypoints拓展：后接动名词的动词avoiddoingsthpracticedoingsthfinishdoingsthdiscouragedoingsthenjoydoingsthimaginedoingsth7.keepdoingsth8.Wouldyouminddoingsth9.preventdoingsth10.regretdoingsth11.sbspendT/Monsth/doingsthKeypoints4.Theseaseemstohavethebestanswer.+n.+adj.+todosthItseemsthat+从句seem1）seem+adj.他似乎很担心____________________________2）seem+n.他看起来是个好人_________________________3）seemtodosth.他看起来是个好人_________________________4）Itseems+that他看起来是个好人________________________Heseemsworried.Heseemsaniceperson.Heseemstobeaniceperson.Itseemsthatheisaniceperson.Keypoints5.Thereisplentyofwaterinthesea.many+可数名词much+不可数名词plentyof=alotof=lotsof+可数名词/不可数名词muchwaterplentyofwateralotofwaterlotsofwatermanypeopleplentyofpeoplealotofpeoplelotsofpeopleKeypoints6.Third,weshoulddiscoverwaystoreusewater.discover:发觉；发现指发现已存在但尚未被人们了解或挖掘的事物、真相等find:找到；发现，多指“偶然发现、碰到”findout:找出；查明指通过观察、分析发现事实的真相—Whofirst___________America?—It’sColumbus.我发现他难以相处。I________itdifficulttogetonwithhim