【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,MariaandMichae

lareplanningapicnicforSunday.TheywillgototheWestHill.Whatcanyouseethere?Wecanseebeesandbutterfliesdancing.bee

butterflyTheflowersandgrasshavegone!Oh,mygoodness.Whatamess!Look!Thereareseveralchemicalfactoriespouringwastewaterintothestream.=havedisappe

ared.1bListento1aandmarkthewordswithP(Past)orN(Now).____beautiful____butterflies____dirty____grass____terrible

____factory____bees____fresh____clean____wastewaterPPNPNNPPPNShowTime!1cRead1aandcompletethesentencesinthetable.Twoyea

rsagoNow1.Itwasa_______________.2.Therewere_______________________.3.Theairwas_______________________andyoucouldsee__

_____________________.1.___________________havegone.2.Thewateris________andsmells___________.3.Thereareseveral_____

___________pouring____________intothestream.4.__________haschanged.beautifulplacelotsofflowersandgrassfreshandthewaterwas

cleanbeesandbutterfliesdancingTheflowersandgrasssodirtyterriblechemicalfactorieswastewaterEverythingLookatthepictu

resandmakeupconversationssimilartotheexamplewithyourpartner.Example:A:TherewerelotsofflowersandgrasswhenIvisitedthevillagelastyear.B:Butno

wtheflowersandgrasshavegone.A:Whathashappenedhere?B:Thevillagershavedestroyedthem.lake/fishfactory/pollutehill/trees

farmers/cutdownvillage/flowersandgrassvillagers/destroy4Workingroupsandtalkaboutpollutioninaplaceyouarefamiliarwith.Th

efollowingsentencesmayhelpyou.…ago,itwas…Now,…have/hasgone.Whathashappened?Everythinghaschanged.Oh,mygoodness!

3A.Listentothesentencesandnumberthepictures.5321461.People_______________toomanytrees,soIdon’thaveenoughle

avestoeat.2.Iliveintreesbutnowmanytrees__________.3.Ilikeleavesandgrass,butnowthey_________________.4.I_______

___hungryformonthsbecauseoflessbamboo.5.Humanpollutedthesea,soI_______________.6.Thewater__________manyyearsago.Butit_______________forme

toliveinnow.B.Listenagainandcompletethesentences.havecutdownhavegonehavedisappearedhavebeendon’tlivehappi

lywascleanistoodirty1.Expressexclamation:Whatamess!Whatashame!Oh,mygoodness!2.KnowthedifferencesbetweenSimplePastandPresentPerfect.Itwasabeautifu

lplace.Everythinghaschanged.1.Somewords:bee,butterfly,mess,shame,several,pour,waste,destroy,pollute,po

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

2.WriteapassageaccordingtoPart4.3.FinishSectionAinyourworkbook.4.PreviewSectionB.