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Unit3LanguageinuseModule12SaveourworldTosummarizeandconsolidatetherulesofwordbuildingObjective:Observethefollowingsentencescarefully.Theyareallfromthismodule.1.Reusemeans“useagain”.2.Thoughpollutionisheavynow,Idon’tthinkit’shopeless.3.Iftheriversarepolluted,farmerscan’tusethewaterfortheircrops.4.Ifeveryonestartstodosomething,theworldwillbesaved.5.Weallneedahealthyenvironment,butweproducewasteeveryday,anditisharmfultoourenvironment.6.Donotwastethings.7.Repeatthesethreewordsdaily:reduce,reuseandrecycle.8.Beforeyoubuysomethingnew,thinkwhetheritisreallynecessarybecausemaybeoldoneisjustasgood!9.…butlet’stakethesesimplestepstodaysothatwewillsavetheworldforourgrandsonsandgranddaughterstomorrow.1._______(use)means“useagain”.2.Though________(pollute)isheavynow,Idon’tthinkit’s________(hope).3.Iftheriversarepolluted,________(farm)can’tusethewaterfortheircrops.4.If_______(everyone)startstodo_________(something),theworldwillbesaved.5.Weallneeda_______(health)environment,butweproduce_______(waste)everyday,anditis_______(harm)toourenvironment.ReusepollutionhopelessfarmerseveryonesomethinghealthywasteharmfulgoReady?6.Donot______(waste)things.7.Repeatthesethreewordsdaily:reduce,_______(use)and_______(recycle).8.Beforeyoubuy_________(something)new,thinkwhetheritis_______(real)necessarybecausemaybeoldoneisjustasgood!9.…butlet’stakethesesimplestepstodaysothatwewillsavetheworldforour_________(grandson)and_________(granddaughter)tomorrow.wastereuserecyclesomethingreallygrandsonsgranddaughters将两个或两个以上独立且语义不同的单词合在一起构成新词的方法称作合成法。合成名词afternoon,sportsman,blackboard,newspaper,airplane,classmate…合成形容词kind-hearted,middle-aged,hard-working…合成副词however,maybe…合成代词himself,everyone,nothing…合成动词overlook…通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法称作派生法。前缀含义例词dis-不disagree,dislikeen-使……处在某种状态enable,enrichim-,in-不impossible,impatient,inexpensiveinter-在……之间international,interconnectmis-错误的mislead,misunderstandnon-不，非non-smoker,non-nativere-再，重复rewrite,retellun-不unable,unhappy,unpopular后缀含义例词-er,-or构成名词teacher,worker,visitor-ianmusician-ingbuilding,painting,shopping-istartist,scientist-mentagreement,government-nesscoldness,happiness,illness-thtruth,warmth-tioncompetition,education,information-tyactivity,safety后缀含义例词-able,-ible构成形容词comfortable,eatable,enjoyable-alenvironmental,international-fulcareful,helpful-iveactive,expensive-lesscareless,helpless,homeless-lyfriendly,lovely,monthly-ousdangerous,famous-teen构成数词eighteen,fifteen,seventeen-thfifteenth,fifth,fortieth-tyforty,sixty,twenty-ly构成副词badly,carefully,happily词根词缀名词形容词副词+…interestuninterestedinterestinglyuninterestinginterestedinterestinghelphelpfullyhelplesslyhelpfulhelplessabledisableunableenableability英语构词法中把一种词性转化为另一种词性而词形不变的方法称为转化法。(1)v.→n.—Let’stalkaboutitmore.—Ithinkwe’dbetterfinishthetalknow.—咱们再谈谈这件事吧。—我想我们最好现在结束谈话。(2)n.→v.—Shegavemeacupofwater.—Youshouldwatertheflowerstwiceaday.—她给了我一杯水。—你应该每天给这些花浇两次水。(3)adj.→n.—Shewaswearingablackdress.—Thegirlinblacklooksverybeautiful.—她穿着一条黑色的裙子。—那个穿黑衣服的女孩看上去很漂亮。Sometimesifyouknowthemeaningofthepartsofaword,youcanworkoutthemeaningofthewholeword.re+new+ablerenewableagaincanbecanbenewagain1P100Makenewwords.JointhepartsofthewordsinBoxAwiththewordsinBoxB.youneedtousesomeofthepartsmorethanonce.-able-fulim--lessre-un-carecollecthopepossibleuseusualwantedwasteABcarefulcarelesscollectablehopefulhopelessimpossiblereuseusableusefuluselessunwantedwastefulunusualNowworkingroups.PlaytheguessinggameEnglishforFun.1.fullofcare_________2.canbecollected__________3.fullofhope_________4.withoutanyhope_____5.notpossible_________6.notusual__________7.withoutanyuse_____8.useagain__________9.notwanted_________10.makingalotofwaste___________carefulcollectablehopefulhopelessimpossibleunusualuselessreuseunwantedwasteful2P100Completethesentenceswiththewordsinthebox.hopefulimpossiblereuseunhealthywasteful1.Pollutedwateris_________.2.Itis_________tothrowsomuchfoodaway.3.Ifyoulookafterthingswell,youmay_______someofthemlater.4.Itis_________tocleanupthewholeriverinsuchashorttime.5.Ifwepayattentiontopollutionnow,thefuturewillbe_________.unhealthywastefulreuseimpossiblehopeful3P101Completethetable.NounVerbAdjectiveAdverbuseful/uselesshopehopefully/hopelesslypollution——water————waste—————usually/unusuallyuseuseusefully/uselesslyhopehopeful/hopelesspollutepolluted/unpollutedwaterwastewasteful/wastedwastefullyusual/unusual4P101CompletethesentenceswiththecorrectformofthewordsinActivity3.Shewas_______thathernewjobwouldmakehermoresuccessful.hopeful1.Thefactory________theriver,andthefishdied.2.Weoftenwalkinthecountryside.Itisa(n)_______activityforus.3.Donotusesomuchwater.Itisvery________.4.Tokeeptheflowersgrowing,youneedto_______themonceaday.pollutedusualwastefulwater5P101Completethesentences.A________isaboxthatyoukeepyourlunchin.lunchbox1.A__________isacardthatyouwriteononesideofandsendtosomeonebypost.2.A__________isaroomwhereyouhaveclassesatschool.3.A__________isabookthathasoneormorestoriesforchildren.4.A__________isablackboardthatisusedatschoolforwritingonwithchalk.postcardclassroomstorybookblackboar