【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,MariaandMichaelareplanning

apicnicforSunday.TheywillgototheWestHill.Whatcanyouseethere?Wecanseebeesandbutterfliesdancing.beebutterflyTheflowersandgrasshavegone!Oh

,mygoodness.Whatamess!Look!Thereareseveralchemicalfactoriespouringwastewaterintothestream.=havedisappeared.1bListento1aandmark

thewordswithP(Past)orN(Now).____beautiful____butterflies____dirty____grass____terrible____factory____bees____fresh____clean____

wastewaterPPNPNNPPPNShowTime!1cRead1aandcompletethesentencesinthetable.TwoyearsagoNow1.Itwasa_______________.2.Therewere_________

______________.3.Theairwas_______________________andyoucouldsee_______________________.1.___________________h

avegone.2.Thewateris________andsmells___________.3.Thereareseveral________________pouring____________intothestream.4._

_________haschanged.beautifulplacelotsofflowersandgrassfreshandthewaterwascleanbeesandbutterfliesdancingThefl

owersandgrasssodirtyterriblechemicalfactorieswastewaterEverythingLookatthepicturesandmakeupconversationssimilartotheexamplewithyourpar

tner.Example:A:TherewerelotsofflowersandgrasswhenIvisitedthevillagelastyear.B:Butnowtheflowersandgrasshavegone.A:Whatha

shappenedhere?B:Thevillagershavedestroyedthem.lake/fishfactory/pollutehill/treesfarmers/cutdownvillage/flowersandgrassvillagers/destroy4Working

roupsandtalkaboutpollutioninaplaceyouarefamiliarwith.Thefollowingsentencesmayhelpyou.…ago,itwas…Now,…have/hasgone.Whathashappened?Everythinghas

changed.Oh,mygoodness!3A.Listentothesentencesandnumberthepictures.5321461.People_______________toomanytrees,s

oIdon’thaveenoughleavestoeat.2.Iliveintreesbutnowmanytrees__________.3.Ilikeleavesandgrass,butnowthey_________________.4.I__________hungryform

onthsbecauseoflessbamboo.5.Humanpollutedthesea,soI_______________.6.Thewater__________manyyearsago.B

utit_______________formetoliveinnow.B.Listenagainandcompletethesentences.havecutdownhavegonehavedisappearedh

avebeendon’tlivehappilywascleanistoodirty1.Expressexclamation:Whatamess!Whatashame!Oh,mygoodness!2.Knowthedifferencesbe

tweenSimplePastandPresentPerfect.Itwasabeautifulplace.Everythinghaschanged.1.Somewords:bee,butterfly,mess,shame,several,pour,waste,destroy,poll

ute,pollution,goodness,villager2.Somephrases:seesb.doingsth.pour…into...cutdown3.Somesentences:Therebe...doing...Homework1.Read1a.2.

WriteapassageaccordingtoPart4.3.FinishSectionAinyourworkbook.4.PreviewSectionB.