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Unit2SavingtheEarthTopic1Pollutionhascausedtoomanyproblems.SectionAA:Wherehaveyoubeen/traveled?B:Ihavebeen/traveledto...Haveyoueverhadap

icnic?Kangkang,Jane,MariaandMichaelareplanningapicnicforSunday.TheywillgototheWestHill.Whatcanyouseethere?Wecanseebeesandbut

terfliesdancing.beebutterflyIstheWestHillbeautiful?aplacewithbeautifulflowersmanyhillsgreentreesTheflowersandgrasshavegone!Oh,mygoodness.Whatam

ess!Look!Thereareseveralchemicalfactoriespouringwastewaterintothestream.=havedisappeared.Isitbeautifulnow?Whathashappenedthere?wastewaterwastepaperWa

stewater.浪费水。Don’twastepaper.不要浪费纸。wasteadj.v.Thereareseveralchemicalfactoriespouringwastewaterintothestream.有几家化工厂正在往小溪里排放废水。Therebe…d

oingsth………有……在做某事e.g.Therearesomepeoplewaitingforthebusatthebusstop.倒出；倾泻pour…into…把……倒入……e.g.Pourredwineintotheglass.1bLis

tento1aandmarkthewordswithP(Past)orN(Now).____beautiful____butterflies____dirty____grass____terrible____factory____bees____fresh____clean____wastewat

erPPNPNNPPPN1cRead1aandcompletethesentencesinthetable.Thenretell1atoyourpartner.TwoyearsagoNow1.Itwasa_______________.2.Therewere___

____________________.3.Theairwas_______________________andyoucouldsee_______________________.1.____________

_______havegone.2.Thewateris________andsmells___________.3.Thereareseveral________________pouring_______________intothestream

.4._____________haschanged.beautifulplacelotsofflowersandgrassfreshandthewaterwascleanbeesandbutterflie

sdancingTheflowersandgrasssodirtyterriblechemicalfactorieswastewaterEverything2Workinpairs.Lookatthepicturesandmakeupconversationssimilartot

heexamplewithyourpartner.Example:A:TherewerelotsofflowersandgrasswhenIvisitedthevillagelastyear.B:Butnowtheflowersa

ndgrasshavegone.A:Whathashappenedhere?B:Thevillagershavedestroyedthem.lake/fishfactory/pollutehill/treesfarmers/cutdownvillage/flowersandgrass

villagers/destroy4Workingroupsandtalkaboutpollutioninaplaceyouarefamiliarwith.Thefollowingsentencesmayhelpyou.…ag

o,itwas…Now,…have/hasgone.Whathashappened?Everythinghaschanged.Oh,mygoodness!3A.Listentothesentencesandnumberthepictures.5321461.People_

______________toomanytrees,soIdon’thaveenoughleavestoeat.2.Iliveintreesbutnowmanytrees__________.3.Ilikeleavesandgrass,butn

owthey_________________.4.I__________hungryformonthsbecauseoflessbamboo.5.Humanpollutedthesea,soI_______________.6.Thewater___

_______manyyearsago.Butit_______________formetoliveinnow.B.Listenagainandcompletethesentences.havecutdownha

vegonehavedisappearedhavebeendon’tlivehappilywascleanistoodirty单项选择()1.Look!Therearesomeboys________o

ntheplayground.A.playfootballB.areplayingfootballC.playingfootballD.playsfootball()2.—I’msorryIcan’tgoshoppingwithyou.Iamill.—_

_______A.Whatamess!B.Whatashame!C.Whatapity!D.BandC()3.—Don’t________water.Wemustsaveeverydropofit.—Sorry,Iwon’

tdoitagain.A.wasteB.throwC.playD.leaveCDA用所给动词的适当形式填空。1.WhenIenteredtheroom,IsawMaria________(read)aChinesebook.2.Wh

atashame!Theflowersandtreesinthepark_________(go).3.Everything_____________(change)inthepastfewyears.4.Pa

ndasdon’thaveenoughbamboos________(eat)nowbecauseofthepollution.5.—Wherehavetheybeen?—They__________(be)tot

heGreatWall.They_______(have)agoodtimetherethedaybeforeyesterday.readinghavegonehaschangedtoeathavebeenhad1

.Expressexclamation:Whatamess!Whatashame!Oh,mygoodness!2.KnowthedifferencesbetweenSimplePastandPresentperfect.Itw

asabeautifulplace.Everythinghaschanged.1.Somewords:bee,butterfly,mess,shame,several,pour,waste,destroy,

pollute,goodness2.Somephrases:seesb.doingsth.pour…into..3.Somesentences:Thereare…doing…Homework1.Read1a.2.Wr

iteapassageaccordingtoPart4.3.FinishSectionAinyourworkbook.4.PreviewSectionB.