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Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.SectionDGrammarIndefinitePronounandAdverb_______ofuslikespollution.Don’tspit__________

_inpublic._________shouldcareforwildanimalsandplantmoretrees.Weshoulddo___________wecantoprotecttheenvironment.NoneanywhereEveryoneeverythingIndef

initepronounandadverb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,eve

ry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?AnybodycandoitexceptT

om.1.—Whichwouldyouliketodrink,teaorcoffee?—________,thanks.I’mnotthirsty.A.EitherB.NeitherC.LittleD.Few2.Thestudentsaredoingsomecleaning.Someares

weepingthefloor,________arecleaningthedesksandchairs.A.otherB.theotherC.anotherD.others3.Myparentsar

e________doctors.A.bothB.allC.eitherD.neither4.Thereis________withmycomputer.Canyouhelpme?A.wronganythingB.anythingwrongC.wrongsomethingD.something

wrong5.Thewindwasblowingstrongly.________peoplewalkedinthestreet.A.LittleB.AlittleC.FewD.Afew6.Hurryup.Th

ereis________timeleft.A.alittleB.littleC.afewD.fewFunctions•______aresult（结果）,alotofrichlandhaschanged_____

____（变为）desert.•Treescanstopthewindfrom______theearth_____(吹走）.•Weshouldn’tleaverubbish___________(到处).•Allthes

eproblemsareveryserious,_____(所以)wemustdosomethingnow.intoblowingawayhereandtheresoAswaterpollutionImagineyouarewater.Pl

easetellusyourfunctions,problemsandwishes.I’mwater.Iusedtobe…Factoriesusuallypour…Iwishhumanbeings…1a

Readthepassageandputthefollowingparagraphsinthecorrectorder.()Theseaseemstohavethebestanswer.Thereisplentyofwaterinthesea.Butwe

needtotakethesaltawayfromtheseawater.Thisisveryexpensive.Ifscientistscanfindcheaperwaystodoit,wecansolvetheproblemoftheshortageofwat

er.()Howcanweavoidaseriouswatershortage?First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresour

cesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater.Scientistshavemadesomeprogressinthisfield.Today,somelargecitiesarereusingtheirwat

er.Butpeople’sneedforwaterisincreasingdaybyday.Westilldon’thaveenoughwater.Whatelsecanwedo?()Althoughtheworldishungry,itiseventhirstier

.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Thisisbecauseabout97%ofthew

aterontheearthisseawater.Sowecan’tuseitforwateringplantsordrinkingdirectly.Humanscanonlydrinkandusefreshwaterfromplacesincludingriv

ers,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.Howca

nweavoidaseriouswatershortage?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n

early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，nearly则不行。nearly只与not连用。e

.g.Ihavealmostneverseenhim.Inearlydidn’thearwhattheteachersaidinclass.3.Althoughtheworldishungry,itiseventhirst

ier虽然世界是饥饿的，但是他更渴。4.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。1bRead1aagainandanswerthe

questions.1.Whyisourworldthirstywhen¾oftheearthiscoveredwithwater?2.Whatcanwedonowtoavoidthewatershortag

e?Becauseabout97%ofthewaterontheearthisseawater,wecan’tuseitforwateringplantsordrinkingdirectly.First,wesh

ouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddisco

verwaystoreusewater.3.Whatwillbethebestwaytosolvetheprobleminthefutureinthepassage?4.Doyouknowanyotherwaystosolvethe

problem?Whatisit?Tofindcheaperwaysoftakingthesaltawayfromtheseawater.2Discussingroupsdifferentwaysofpro

tectingandsavingwater.Writedownthekeyinformation.Example:1.Passlaws(n.法律)againstwaterpollution.2.Collectandreusewastewater.……

3.Writeaproposalaboutsavingwatertoallthestudentsinyourschool.Mydearfriends,Waterisveryimportanttohumanbeings.

Let’sdosomethingtoprotectandsaveit.First,________.Second,_________.Third,_________.Let’stryourbesttosavewaterandourpl

anet._____________Mydearfriends,Waterisveryimportanttohumanbeings.Let’sdosomethingtoprotectandsaveit.First,weshouldprotectourwaterresourcesandnotpoll

utethem.Thegovernmentshouldalsopasslawsagainstthewaterpollution.Second,weshouldsavewaterinourdailylife,turnoffthetapsi

ntime,takeashowerinsteadofabath,andalwaysremembertocollectandreusewater.Third,let’strytospreadthemessageaboutprotectingandsavingwater.Ma

kemorepeoplearoundusknowtheproblemofwatershortageandhowtohelpsolveit.Let’stryourbesttosavewaterandourplanet

.StudentUnionYoucanwriteitlikethis.MakingPostersAboutNaturalResources1.Dividetheclassintoseveralgroups:WaterGroup,TreeGroup,SoilGroup…2.

Eachgroupshoulddiscusstheirownuses,theproblemsthattheyfaceandtheirwishes.Thengiveareportinclass.Example:Uses:Iamsoil.Plants

can’tgrowwithoutme.Peopleusemetomakemanythings…Problems:Sometimespeopleusetoomanychemicalsinthefields

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

…3.Makesomeposterswiththeresult.1.Ifwewanttousetheseawater,wemust_________(拿走）thesaltfromtheseawater.2.Howcanwe_______

__(避免)aseriouswatershortage?3.Weshould__________(找到)waystoreusewater.4.People’sneedforwaterisincreasing____________(一天天).5.Althoughtheworldishu

ngry,itiseven______(更渴的)6.While___________(几乎，差不多)¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.takeawayavoiddiscoverdaybyd

aythirstiernearlyWelearn:1.somewords:avoid,discover,thirsty,nearly,law2.somephrases:daybyday,beshortof3.somesentences:(1)Butpeople’

sneedforwaterisincreasingdaybyday.(2)Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Wecan:1.Talkaboutwaysofsavingwater.2.

Summarizeandusetheindefinitepronounandadverbcorrectly.3.Writeaproposal.SummaryAssignment•Read1a.•Reviewtheusefulexpressionsandkeysentenceswhich

welearninthistopic.•PreviewSectionAinTopic3.