九年级英语上册 Unit 2 Topic 2 All these problems are very serious Section D课件 （新版）仁爱版.ppt

Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.,SectionD,Grammar,None,anywhere,Everyone,everything,Indefinitepronounandadverb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.Imnotthirsty.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.few,Exercises,Functions,_aresult（结果）,alotofrichlandhaschanged_（变为）desert.Treescanstopthewindfrom_theearth_(吹走）.Weshouldntleaverubbish_(到处).Alltheseproblemsareveryserious,_(所以)wemustdosomethingnow.,into,blowing,away,hereandthere,so,As,waterpollution,Imagineyouarewater.Pleasetellusyourfunctions,problemsandwishes.,Imwater.IusedtobeFactoriesusuallypourIwishhumanbeings,1aReadthepassageandputthefollowingparagraphsinthecorrectorder.,()Theseaseemstohavethebestanswer.Thereisplentyofwaterinthesea.Butweneedtotakethesaltawayfromtheseawater.Thisisveryexpensive.Ifscientistscanfindcheaperwaystodoit,wecansolvetheproblemoftheshortageofwater.()Howcanweavoidaseriouswatershortage?First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater.Scientistshavemadesomeprogressinthisfield.Today,somelargecitiesarereusingtheirwater.Butpeoplesneedforwaterisincreasingdaybyday.Westilldonthaveenoughwater.Whatelsecanwedo?()Althoughtheworldishungry,itiseventhirstier.Whilenearlyoftheearthiscoveredwithwater,wearestillshortofdrinkingwater.Thisisbecauseabout97%ofthewaterontheearthisseawater.Sowecantuseitforwateringplantsordrinkingdirectly.Humanscanonlydrinkandusefreshwaterfromplacesincludingrivers,lakesandunderground.,1,2,3,名词avoid代词动名词,v.防止，避免,v.发现，找到,Languagepoints,e.g.Heavoidedansweringmyquestions.,不定式不可以做宾语。,1.Howcanweavoidaseriouswatershortage?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。,thirsty,adj.缺水的;（口）渴的,nearly,adv.几乎，将近,nearly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.Inearlydidnthearwhattheteachersaidinclass.,Languagepoints,3.Althoughtheworldishungry,itiseventhirstier虽然世界是饥饿的，但是他更渴。,4.Whilenearlyoftheearthiscoveredwithwater,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。,1bRead1aagainandanswerthequestions.,1.Whyisourworldthirstywhenoftheearthiscoveredwithwater?2.Whatcanwedonowtoavoidthewatershortage?,Becauseabout97%ofthewaterontheearthisseawater,wecantuseitforwateringplantsordrinkingdirectly.,First,weshouldsavewaterandnotwasteit.Second,weshouldprotectourwaterresourcesandnotpollutethem.Third,weshoulddiscoverwaystoreusewater.,3.Whatwillbethebestwaytosolvetheprobleminthefutureinthepassage?,4.Doyouknowanyotherwaystosolvetheproblem?Whatisit?,Tofindcheaperwaysoftakingthesaltawayfromtheseawater.,2Discussingroupsdifferentwaysofprotectingandsavingwater.Writedownthekeyinformation.,Example:Passlaws(n.法律)againstwaterpollution.Collectandreusewastewater.,3.Writeaproposalaboutsavingwatertoallthestudentsinyourschool.,Mydearfriends,Waterisveryimportanttohumanbeings.Letsdosomethingtoprotectandsaveit.First,_.Second,_.Third,_.Letstryourbesttosavewaterandourplanet.,_,Mydearfriends,Waterisveryimportanttohumanbeings.Letsdosomethingtoprotectandsaveit.First,weshouldprotectourwaterresourcesandnotpollutethem.Thegovernmentshouldalsopasslawsagainstthewaterpollution.Second,weshouldsavewaterinourdailylife,turnoffthetapsintime,takeashowerinsteadofabath,andalwaysremembertocollectandreusewater.Third,letstrytospreadthemessageaboutprotectingandsavingwater.Makemorepeoplearoundusknowtheproblemofwatershortageandhowtohelpsolveit.Letstryourbesttosavewaterandourplanet.StudentUnion,Youcanwriteitlikethis.,Project,MakingPostersAboutNaturalResources,Dividetheclassintoseveralgroups:WaterGroup,TreeGroup,SoilGroupEachgroupshoulddiscusstheirownuses,theproblemsthattheyfaceandtheirwishes.Thengiveareportinclass.Example:Uses:Iamsoil.Plantscantgrowwithoutme.PeopleusemetomakemanythingsProblems:Sometimespeopleusetoomanychemicalsinthefields.Whatsworse,theyputwasteintothelandSoImhurt.Pleasehelpme.Wishes:Ihopehumanbeingscanprotectandtakecareofme.AndthenIcoulddomoreusefulthingsforthem3.Makesomeposterswiththeresult.,Exercises,Ifwewanttousetheseawater,wemust_(拿走）thesaltfromtheseawater.Howcanwe_(避免)aseriouswatershortage?Weshould_(找到)waystoreusewater.Peoplesneedforwaterisincreasing_(一天天).Althoughtheworldishungry,itiseven_(更渴的)While_(几乎，差不多)oftheearthiscoveredwithwater,wearestillshortofdrinkingwater.,takeaway,avoid,discover,daybyday,thirstier,nearly,Welearn:1.somewords:avoid,discover,thirsty,nearly,law2.somephrases:daybyday,beshortof3.somesentences:(1)Butpeoplesneedforwaterisincreasingdaybyday.(2)Whilenearlyoftheearthisc