九年级英语（外研版）上册课件-【Module 12 Unit 3】

Unit3LanguageinuseModule12Saveourworld外研·九年级上册LanguagepracticeReusemeans“useagain”.Thoughpollutionisheavynow,Idon’tthinkit’shopeless.Makenewwords.JointhepartsofwordsinBoxAwiththewordsinBoxB.Youneedtousesomeofthepartsmorethanonce.1-able-fulim--lessre-un-ABcarecollecthopepossibleuse

usualwantedwasteNowworkingroups.PlaytheguessinggameEnglishforFun.1fullofcare __________2canbecollected __________3fullofhope __________4withoutanyhope _________careful

EnglishforFuncollectablehopefulhopeless5notpossible__________6notusual__________7withoutanyuse__________8useagain__________9notwanted__________10makingalotofwaste__________uselessimpossiblewastefulunusualreuseunwantedLearningtolearnSometimesifyouknowthemeaningofthepartsofaword,youcanworkoutthemeaningofthewholeword.re+new+able:re=again,able=canberenewable=canbenewagain构词法：合成法派生法转化法Grammar一、合成法

将两个或两个以上独立且语义不同的的单词合在一起构成新词的方法叫做合成法。如：afternoon、kind-hearted、maybe等等。掌握合成法有助于我们理解和记忆更多单词。

在一个单词前或后加上一个词缀，就可以构成一个新词，这种方法叫做派生法。根据词缀的位置，分为前缀和后缀两种。掌握一些常见的词缀，对单词的记忆和理解有很大的帮助。比如：我们学会care,就能掌握careful,careless,carefully,carelessly。下面我们来学习几个常见的前、后缀：二、派生法1.表示否定意义“无，不”的前缀：impatient,impossibleun-in-dis-im-non-unable,unhappyinexpensive,indecisiondisagree,dislikenon-smoker前缀：2.表示“再”的前缀：re-rewrite,reuse,recycle3.表示“错误地”的前缀：mis-mislead,misunderstand4.表示“在……之间，相互”意思的前缀：inter-表示“在……之间，相互”：Internet后缀：–able表示“可能，易于，适合于”，构成形容词，如：renewable,eatable(可吃的)，enjoyable常见的后缀：2.–ful表示“充满……的，具有……性的”，构成

形容词，如：helpful,hopeful,powerful,useful,

careful,beautiful3.–less与-ful相反，表示“少的，不足的”，构成

形容词，如：helpless,hopeless,powerless,useless,

careless1.动词变名词：-ation-ment-er-orinvitation,education,agreement,governmentteacher,workervisitor,sailor让我们来看一些不改变词根的基本意义，而是改变了词性的后缀2.形容词变名词：-ness-tyhappiness,meanness,carelessnessactivity,safety3.名词、形容词变动词：-ify-ize-enbeautify,simplifyrealizequicken,widen,sharpen4.名词变形容词：-y-ous-fulwindy,rainy,sandydangerous,humoroushelpful,careful,peaceful英语构词法中把一种词性用作另一种词性而词形不变的方法叫做转换法。三、转换法动词转化为名词—Let’stalkaboutitmore.

—Ithinkwe’dbetterfinishthetalknow.(2)名词转化为动词—Shegavemeacupofwater.—Youshouldwatertheflowerstwiceaday.

(3)形容词转化为名词—Shewaswearingablackdress.—Thegirlinblacklooksverybeautiful.（黑衣服）Completethesentenceswiththewordsinthebox.2hopefulimpossiblereuseunhealthywasteful1Pollutedwateris_____________.2Itis____________tothrowsomuchfoodaway.unhealthywasteful3Ifyoulookafterthingswell,youmay______someofthemlater.4Itis___________tocleanupthewholeriverinsuchashorttime.5Ifwepayattentiontopollutionnow,thefuturewillbe___________.reuseimpossiblehopefulCompletethetable.3NounVerbAdjectiveAdverbuseful/uselesshopehopefully/hopelesslypollution—useuseusefully/uselesslyhopehopeful/hopelesspollutepolluted/unpollutedNounVerbAdjectiveAdverbwater——waste——usually/unusuallywaterwastewasteful/wastedwastefullyusual/unusualCompletethesentenceswiththecorrectformofthewordsinActivity3.4Shewas___________thathernewjobwouldmakehermoresuccessful.hopefulThefactory_________theriver,andthefishdied.polluted2.Weoftenwalkinthecountryside.Itisa(n)__________activityforus.3.Donotusesomuchwater.Itisvery_________.4.Tokeeptheflowersgrowing,youneedto________themonceaday.waterwastefulusual/usefulCompletethesentences.5A_________isaboxthatyoukeepyourlunchin.lunchbox1A____________isacardthatyouwriteononesideofandsendtosomeonebypost.2A__________isaroomwhereyouhaveclassesatschool.classroompostcard3A___________isabookthathasoneormorestoriesforchildren.4A____________isablackboardthatisusedatschoolforwritingonwithchalk.blackboardstorybookWorkinpairs.Lookatthepicturesandanswerthequestions.61Whatkindsofthingscanberecycled?2Howcanthesethingsbereused?3Howdoesthishelptheenvironment?4Haveyoueverrecycledorusedthingsthatcanberecycled?How?Completetheconversationwiththecorrectformoftheexpressionsinthebox.7begoodforthrowawayturnoffworryaboutIhearyouareofftotheCaribbeanforaholiday!Luckyyou!Butaren’tyou(1)_______________thepollutionthatsuchlongplanejourneysmaycausefortheenvironment?worriedaboutMike:Iknow,butwhatcanIdoaboutit?I’vealreadytriedmybesttoprotecttheenvironment.Irecycle.Idon’t(2)__________thingsifIdon’twantthemanymore.I(3)_________thelightswhenIleavearoom.Don’ttellmeIshouldn’ttravelbyplaneanymore!throwawayturnoffKen:Mike:No,ofcoursenot.Butwecandomoretoprotecttheenvironment.Forexample,wecanhelpkeeptheaircleanbyplantingtrees.Trees(4)____________theenvironment.Inthisway,wecanreducetheharmofpollution.aregoodforGood!SoIcanenjoymyholiday,andwhenIcomeback,I’llplantsometrees!That’stheidea!Maybewecanalljoininandstartasmallforest!Ken:Mike:Listenandcheck(√)thetruesentences.8It’sOKtothrowusedthingsaway.Lookingafterthemtakesalotoftime. □

Donotthrowawaythingsmadeofglass,plasticandpaper,butrecyclethemwhenpossible. □Takeabagwhenyougoshopping. □√√4.Producingelectricityandusingoilwillnotcausepollution. □5.Turnofflightswhenyoudonotneedthem. □6.Rideabikeorwalk,anddonotoftendriveyourcar. □√√Listenagainandcompletethetable.9AdviceReasons1Don’tthrowawaythingsmadeof_________________________,but_______them.

Throwingthingsawayiswasteful.2_______yourplasticbagswhenyoucanand___________withyouwhenyougoshopping.Plasticbags______________recycle.glass,plasticandpaperrecycleReusetakeabagarehardtoAdviceReasons3Uselesselectricityandoilto____________________.4Don’tleavelightsonand__________________.5_______________anddonotoftendriveyourcar.Producingelectricityandusingoilmaycause_________.reducepolltionwasteelectricityWalkorcyclepollutionReuseandrecycleIt’sawastetothrowusedthingsaway.Don’tthrowawaythingsmadeofglass,plasticandpaper,butrecyclethemifpossible.Plasticbagsarehardtorecycle,soreusetheoldoneswhenyoucan.Takeabagwithyouwhenyougoshopping.TapescriptReducepollutionProducingelectricityandusingoilmaycausepollutionoftheair,waterandearthinmanydifferentways.Ifweuselesselectricityandoil,wecanreducepollution.Hereissomeadvice:don’tleavelightsonandwasteelectricity;walkorcycle,anddon’tdriveacarunlessyouhaveto.Walkingandcyclingaregoodforyourhealthtoo!EarthHourEarthHourisheldtowardtheendofMarcheachyear.DuringEarthHour,peopleallacrosstheworldswitchoffthelightstheydonotneed.Theydothistoshowtheirawarenessofclimatechange.AroundtheworldThefirstEarthHourwasheldin2007inSydney,wheremorethan2.2millionpeopleswitchedofftheirlights.Today,moreandmorecitiesaretakingpartintheevent,suchasBeijing,London,RomeandNewYork,andlandmarksliketheEmpireStateBuildingandtheGoldenGateBridgewillgodark.Moduletask:

DiscussingwhatyoucandoaboutpollutionWorkingroups.Decidewhatkindofpollutionyouwanttotalkabout.10Chooseasubjectthatyoucareaboutthemost.Itcouldbewaterpollution,airpollution,etc.Findoutmoreinformationaboutyoursubject.Lookituponawebsiteorinabooks.Discussyoursubject.Taketurnstosaywhatyouthinkaboutthe

problemandwhatcanbedone.Listentowhatotherssay.Ifyouagreewith

whattheyhavesaid,say“Iagree”,“That’s

true”or“That’sagoodpoint”;ifyoudo

notagreewithwhatsomeonesays,say

“I’msorry,butIdon’tagree.Ithinkthat...”11Presentyourgroup’sideastothewholeclass.13一、根据句意，用括号内单词的正确形式填空。Thereis