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Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.SectionDGrammarIndefinitePronounandAdverb_______ofuslikespollut

ion.Don’tspit___________inpublic._________shouldcareforwildanimalsandplantmoretrees.Weshoulddo_________

__wecantoprotecttheenvironment.NoneanywhereEveryoneeverythingIndefinitepronounandadverb不定代词和副词一、构成。不定代词、副词是由some,any,

no,every与thing,one,body,where等构成。E.g.something,someone,nowhere,anybody等。二、用法。1．通常情况下,由some,every加后缀构成的不定代词、副词常用于肯定句；由any加后

缀构成的不定代词、副词常用于疑问句、否定句中。E.g.Youwillfindyourbagsomewhere.Canyouhearanything?2.注意：当说话人希望得到肯定答复,或是表示建议、请求等意图时,something,

somebody,someone也可以用于疑问句中。当要表达“任何人；任何事物”时,anything,anybody,anyone也可以用于肯定句中。E.g.Wouldyoulikesomethingtodrink?AnybodycandoitexceptTom.1.—Whichw

ouldyouliketodrink,teaorcoffee?—________,thanks.I’mnotthirsty.A.EitherB.NeitherC.LittleD.Few2.Thestudentsaredoingsomecleaning.Somear

esweepingthefloor,________arecleaningthedesksandchairs.A.otherB.theotherC.anotherD.others3.Myparentsare________doctor

s.A.bothB.allC.eitherD.neither4.Thereis________withmycomputer.Canyouhelpme?A.wronganythingB.anythingwrongC.wrongsomethi

ngD.somethingwrong5.Thewindwasblowingstrongly.________peoplewalkedinthestreet.A.LittleB.AlittleC.FewD.Afew6.H

urryup.Thereis________timeleft.A.alittleB.littleC.afewD.fewFunctions•______aresult（结果）,alotofrichlandh

aschanged_________（变为）desert.•Treescanstopthewindfrom______theearth_____(吹走）.•Weshouldn’tleaverubbish___________(到处).•Alltheseproblemsa

reveryserious,_____(所以)wemustdosomethingnow.intoblowingawayhereandtheresoAswaterpollutionImagineyouar

ewater.Pleasetellusyourfunctions,problemsandwishes.I’mwater.Iusedtobe…Factoriesusuallypour…Iwishhumanbeings…1aReadthepassage

andputthefollowingparagraphsinthecorrectorder.()Theseaseemstohavethebestanswer.Thereisplentyofwaterinthesea.Butweneedtotakethesal

tawayfromtheseawater.Thisisveryexpensive.Ifscientistscanfindcheaperwaystodoit,wecansolvetheproblemoftheshortageofwater.()Howcanweavoidaseriouswa

tershortage?First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third

,weshoulddiscoverwaystoreusewater.Scientistshavemadesomeprogressinthisfield.Today,somelargecitiesarereusingtheir

water.Butpeople’sneedforwaterisincreasingdaybyday.Westilldon’thaveenoughwater.Whatelsecanwedo?()Althoughthew

orldishungry,itiseventhirstier.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Thisisbecauseabout97%o

fthewaterontheearthisseawater.Sowecan’tuseitforwateringplantsordrinkingdirectly.Humanscanonlydrinkandusefreshwaterfromplacesinclu

dingrivers,lakesandunderground.名词avoid代词动名词v.防止，避免v.发现，找到e.g.Heavoidedansweringmyquestions.不定式不可以做宾语。1.H

owcanweavoidaseriouswatershortage?我们如何避免水资源短缺呢？2….weshoulddiscoverwaystoreusewater.我们需要找到再利用水的方法。thirstyadj.缺水的;（口）渴的nearlyadv.几乎，将近near

ly与almost区别：almost多表示时间、程度、距离、进度，且almost可以修饰morethan,too,nothing,nobody,nowhere,noone,none,never等词，n

early则不行。nearly只与not连用。e.g.Ihavealmostneverseenhim.Inearlydidn’thearwhattheteachersaidinclass.3.Althoug

htheworldishungry,itiseventhirstier虽然世界是饥饿的，但是他更渴。4.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwate

r.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。1bRead1aagainandanswerthequestions.1.Whyisourworldthirstywhen¾oftheearthiscove

redwithwater?2.Whatcanwedonowtoavoidthewatershortage?Becauseabout97%ofthewaterontheearthisseawater,wecan’tuseitforwateringplantsordrinkingdirec

tly.First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater

.3.Whatwillbethebestwaytosolvetheprobleminthefutureinthepassage?4.Doyouknowanyotherwaystosolvetheproble

m?Whatisit?Tofindcheaperwaysoftakingthesaltawayfromtheseawater.2Discussingroupsdifferentwaysofprotectingandsavingwater.Writed

ownthekeyinformation.Example:1.Passlaws(n.法律)againstwaterpollution.2.Collectandreusewastewater.……3.W

riteaproposalaboutsavingwatertoallthestudentsinyourschool.Mydearfriends,Waterisveryimportanttohumanbeings.Let’sdosomethingtop

rotectandsaveit.First,________.Second,_________.Third,_________.Let’stryourbesttosavewaterandourplanet._____________Mydearfrie

nds,Waterisveryimportanttohumanbeings.Let’sdosomethingtoprotectandsaveit.First,weshouldprotectourwaterresourcesandnotpollutet

hem.Thegovernmentshouldalsopasslawsagainstthewaterpollution.Second,weshouldsavewaterinourdailylife,tu

rnoffthetapsintime,takeashowerinsteadofabath,andalwaysremembertocollectandreusewater.Third,let’strytosp

readthemessageaboutprotectingandsavingwater.Makemorepeoplearoundusknowtheproblemofwatershortageandhowtohelpsolveit.Let’stryo

urbesttosavewaterandourplanet.StudentUnionYoucanwriteitlikethis.MakingPostersAboutNaturalResources1.Dividetheclassintoseveralgroups:WaterGroup,TreeGr

oup,SoilGroup…2.Eachgroupshoulddiscusstheirownuses,theproblemsthattheyfaceandtheirwishes.Thengiveareportinclass.Example:Uses:Iamsoil.Plantscan

’tgrowwithoutme.Peopleusemetomakemanythings…Problems:Sometimespeopleusetoomanychemicalsinthefields.What’

sworse,theyputwasteintotheland…SoI’mhurt.Pleasehelpme.Wishes:Ihopehumanbeingscanprotectandtakecareofme.AndthenIcoulddom

oreusefulthingsforthem…3.Makesomeposterswiththeresult.1.Ifwewanttousetheseawater,wemust_________(拿走）thesaltf

romtheseawater.2.Howcanwe_________(避免)aseriouswatershortage?3.Weshould__________(找到)waystoreusewater.4.People’sneedforwaterisincreasin

g____________(一天天).5.Althoughtheworldishungry,itiseven______(更渴的)6.While___________(几乎，差不多)¾oftheearthiscoveredwithwater,

wearestillshortofdrinkingwater.takeawayavoiddiscoverdaybydaythirstiernearlyWelearn:1.somewords:avoid,discover,thirsty,ne

arly,law2.somephrases:daybyday,beshortof3.somesentences:(1)Butpeople’sneedforwaterisincreasingdaybyday.(2)Whilenearly¾oft

heearthiscoveredwithwater,wearestillshortofdrinkingwater.Wecan:1.Talkaboutwaysofsavingwater.2.Summarizeandusetheindefinitepronounandadverbcorrectly.3

.Writeaproposal.SummaryAssignment•Read1a.•Reviewtheusefulexpressionsandkeysentenceswhichwelearninthistopic.•PreviewSectionAinTopic3.