【文档说明】《Unit 2 Topic 1 Pollution has causes too many problems》课件4-九年级上册英语仁爱（科普版）.ppt，共(20)页，7.851 MB，由小喜鸽上传

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Unit2SavingtheEarthTopic1PollutionhascausedtoomanyproblemssectionAhaveapicnicKangkang,Jane,MariaandMichaelareplanningapicnicfo

rSunday.TheywillgototheWestHill.Whatcanyouseethere?Wecanseebeesandbutterfliesdancing.beebutterflyTheflowersandgrasshavegone!Oh,mygoodnes

s.Whatamess!Look!Thereareseveralchemicalfactoriespouringwastewaterintothestream.=havedisappeared.1bListento1aandmarkthewordswithP(Past)orN(N

ow).____beautiful____butterflies____dirty____grass____terrible____factory____bees____fresh____clean____waste

waterPPNPNNPPPNShowTime!1cRead1aandcompletethesentencesinthetable.TwoyearsagoNow1.Itwasa_______________.2.Therewere__________

_____________.3.Theairwas_______________________andyoucouldsee_______________________.1.___________________havegone.2.Thewateris________andsme

lls___________.3.Thereareseveral________________pouring____________intothestream.4.__________haschanged.beautifulplacelotsofflow

ersandgrassfreshandthewaterwascleanbeesandbutterfliesdancingTheflowersandgrasssodirtyterriblechemicalfactorieswastewate

rEverythingLookatthepicturesandmakeupconversationssimilartotheexamplewithyourpartner.Example:A:Therewerelotsofflo

wersandgrasswhenIvisitedthevillagelastyear.B:Butnowtheflowersandgrasshavegone.A:Whathashappenedhere?B:Thevillagershavedestroyedthem.lake/fish

factory/pollutehill/treesfarmers/cutdownvillage/flowersandgrassvillagers/destroy4Workingroupsandtalk

aboutpollutioninaplaceyouarefamiliarwith.Thefollowingsentencesmayhelpyou.…ago,itwas…Now,…have/hasgone.Whath

ashappened?Everythinghaschanged.Oh,mygoodness!3A.Listentothesentencesandnumberthepictures.5321461.Peo

ple_______________toomanytrees,soIdon’thaveenoughleavestoeat.2.Iliveintreesbutnowmanytrees__________.3.Ilikeleavesandgrass,butnowth

ey_________________.4.I__________hungryformonthsbecauseoflessbamboo.5.Humanpollutedthesea,soI_______________.6.The

water__________manyyearsago.Butit_______________formetoliveinnow.B.Listenagainandcompletethesentences.havecutdownhavegonehavedisappear

edhavebeendon’tlivehappilywascleanistoodirty1.Expressexclamation:Whatamess!Whatashame!Oh,mygoodness!2.KnowthedifferencesbetweenSimplePasta

ndPresentPerfect.Itwasabeautifulplace.Everythinghaschanged.1.Somewords:bee,butterfly,mess,shame,several,pour,waste,destroy,pollute,pollution,go

odness,villager2.Somephrases:seesb.doingsth.pour…into...cutdown3.Somesentences:Therebe...doing...Homework1.Read1a.2.Writeapa

ssageaccordingtoPart4.3.FinishSectionAinyourworkbook.4.PreviewSectionB.