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Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.SectionDGrammarIndefinitePronounandAdverb_______ofuslikespollution.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.—Whichwouldyouliketodrink,teaorcoffee?—________,thanks.I’mnotthirsty.A.EitherB.NeitherC.LittleD.Few2.Thestudentsaredoingsomecleaning.Somearesweepingthefloor,________arecleaningthedesksandchairs.A.otherB.theotherC.anotherD.others3.Myparentsare________doctors.A.bothB.allC.eitherD.neither4.Thereis________withmycomputer.Canyouhelpme?A.wronganythingB.anythingwrongC.wrongsomethingD.somethingwrong5.Thewindwasblowingstrongly.________peoplewalkedinthestreet.A.LittleB.AlittleC.FewD.Afew6.Hurryup.Thereis________timeleft.A.alittleB.littleC.afewD.fewFunctions______aresult（结果）,alotofrichlandhaschanged_________（变为）desert.Treescanstopthewindfrom______theearth_____(吹走）.Weshouldn’tleaverubbish___________(到处).Alltheseproblemsareveryserious,_____(所以)wemustdosomethingnow.intoblowingawayhereandtheresoAswaterpollutionImagineyouarewater.Pleasetellusyourfunctions,problemsandwishes.I’mwater.Iusedtobe…Factoriesusuallypour…Iwishhumanbeings…预习导纲一.读1a内容，在文中找出下列短语并画出来然后朗读。1.似乎有最佳答案_____2.从海水中提取出盐_______3.解决水短缺问题________4.保护水资源________5.在这领域取得些进步______6.一天一天地______7.将近3/4的地球______8.由---覆盖_______9.缺少饮水_______10.使用淡水_______二.读下列句子并探究。1.1.Howcanweavoidaseriouswatershortage?译：____探究：avoid___词，意为____.其后可接名词或代词作__语，也可接___作宾语，但是不能接不定式作宾语。练一练：To____answeringmyquestions,sheleftthehall.A.offerB.escapeC.avoidD.refer想一想：除avoid仅用动名词作宾语外，还有：____（完成），____（喜欢），___（练习），___(保持），___（介意）等词。2.Ifscientistscanfindcheaperwaystodoit,译：__Third,weshoulddiscoverwaystoreusewater.译：__探究：find意为___,着重指找到的结果。discover意为__,表示“偶然”发现客观存在的事物、真理或错误。findout意为___,常指经过研究了解或询问，找出事实真相或原理、方法。练一练：⑴Canyou___whattimethetrainleaves?A.findB.findoutC.inventD.discover⑵Newton____thelawofgravitation（万有引力定律）A.foundB.foundoutC.inventedD.discovered3.Whilenearly¾oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.译：_____。探究：nearly__词，意为___.常可与almost换用，但在具体数字前常用nearly.not修饰nearly意为“远非”，“远不及”。almost可以修饰morethan,too,nothing,nobody,nowhere,noone,none,never等词，nearly则不行.如：Healmostknockedmedownbeforehesawme.Almostnoone(=Hardlyanyone)believesher.几乎没有人相信她练一练：Myeyesightwas___destroyedinthataccident.ThankstoDrBeker,Ienjoythebeautifulworldagain.A.completelyB.hardlyC.quicklyD.nearly单项选择1.Weneedto___thesaltawayfromtheseawater.Butitscostis____.A.get,expensiveB.keep,cheapC.take,highD.get,low2.Althoughtheworldishungry,itis____thirstier.A.muchB.evenC.veryD.so3.Scientistshave____inreusingwatertheseyears.A.madesomeprogressB.succeededC.workedwellD.doneworst4.Becauseofwaterpollution,weare_____drinkingwaterinourdailylives.A.shortofB.shortforC.pleasedwithD.angryat1aReadthepassageandputthefollowingparagraphsinthecorrectorder.()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.1bRead1aagainandanswerthequestions.1.Whyisourworldthirstywhen¾oftheearthiscoveredwithwater?2.Whatcanwedonowtoavoidthewatershortage?Becauseabout97%ofthewaterontheearthisseawater,wecan’tuseitforwateringplantsordrinkingdirectly.First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater.3.Whatwillbethebestwaytosolvetheprobleminthefutureinthepassage?4.Doyouknowanyotherwaystosolvetheproblem?Whatisit?Tofindcheaperwaysoftakingthesaltawayfromtheseawater.2Discussingroupsdifferentwaysofprotectingandsavingwater.Writedownthekeyinformation.Example:1.Passlaws(n.法律)againstwaterpollution.2.Collectandreusewastewater.……3.Writeaproposalaboutsavingwatertoallthestudentsinyourschool.Mydearfriends,Waterisveryimportanttohumanbeings.Let’sdosomethingtoprotectandsaveit.First,________.Second,_________.Third,_________.Le