Unit3LanguageinuseDoyouknow:

re=againable=canbe?renewable=canbenewagainLeaningtolearncarecollectdonehopepossibleusualusedwantedwasteAPositive:-able-fulNegative:im--lessre-un-LookattheboxesBMakenewwordscanbecollected___________notdone___________fullofhope_________withoutanyhope__________notpossible___________collectableundonehopefulhopelessimpossiblenotusual________notused________usedagain_______notwanted__________makingalotofwaste_________unusualunusedreusedunwantedwasteful1.Pollutedwateris

nothealthy.2.It’ssomethingwe

canuseagain.3.Thewaterintheriverwasvery

dirty.a.reusableb.unhealthyc.uncleanMatchthewordswiththeirmeanings.4.It’snottruethatwedon’tlistentostudents.5.Itwasnotpossibletocleanupthewholeriver.6.Thepeopleonthemountaintopwere

notcomfortable.d.impossiblee.untruef.uncomfortableCompletethetableinActivity3.NounVerbAdjectiveAdverb__electric____energeticallyenvironment__hopelessly__nationalelectricityenergyhopenationenergeticenviron-mentalenviron-mentallyhopelessnationallyhopeNounVerbAdjectiveAdverbpollute__seriousness__unusualness__unusuallywasteworrypollutionpollutedworriedlyseriouslyunusualwastewastefulwastefullyworryworriedseriousTheyareworking____________toreducewaste.2.Thesituationis________.Wecan’tdoanythingtomakeitbetter.3.Thefactory________theriver,andthefishdied.energeticallyhopelesspollutedCompletethesentenceswiththecorrectformofthewordsinActivity3.4.Wedon’toftenwalkinthecountry.It’sa(n)_________activityforme.5.Don’t______.Everythingwillbeallright.6.Don’tusesomuchwater.It’svery________.worrywastefulunusualReadtheideasonprotectingtheenvironment.Puttheminthecorrectcolumninthetable.a.Don’tbuyanythingmadefromendangeredanimalsorplants.b.Glassbottlesandnewspaperscanbetakentorecyclingcentresandreused.c.Don’tboilmorewaterthannecessary.d.Don’ttakenewplasticbagsfromtheshopreuseyouroldones.e.Turnofflightswhenyoudon’tneedthem.f.Useabicycleorwalkinsteadofusingthecar.WastePollutionWildlifeb,dc,e,faListenagainandanswerthequestions.Whyshouldyoureuseplasticbags?2.Nametwoadvantagesofusingabicycleorwalkinginsteadofusingacar.Becausetheyarehardtorecycle.Thereisnopollutionandit’sagoodkindofexercise.3.Whydidanimalsdieout?4.Howcanwestopsomepeopletryingtokillorsellendangeredanimalsandplants?Becausepeoplehavecutdownalotoftreesandpollutedtherivers.Neverbuyanythingmadefromendangeredanimals.鞏固練習(xí)I.請選擇適當(dāng)?shù)脑~語，并用其正確形式填空(每詞限用一次)。

polite,use,happy,instead,repair,like,believe,insteadof,care,hope,mend

1.Weshouldbuythingsthatcanbe______.2.InEngland,askingawoman’sageis________.3.Heistoobusy.Letmegowithyou______.insteadreusedimpolite4.ThedoctorsaidAnn’sillnesswas________.Hermotherwasverysad.5.Youaretoo_______.Howcanyoumakesuchamistake?6.Mymother_______theclothesformelastnight.7.Whathesaidsounded_________,solet’sfollowhim.believablehopelesscarelessmended8.I’llstayathome_________goingoutbecauseoftherain.9.Mywatchisbroken.Canyouhelpme______it?10.Ihate