【文档说明】《Unit 2 Topic 1 Pollution has causes too many problems》PPT课件8-九年级上册英语仁爱（科普版）.ppt，共(21)页，3.518 MB，由小喜鸽上传

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Unit2SavingtheEarthTopic1Pollutionhascausedtoomanyproblems.SectionAReviewBee:n蜜蜂butterfly:n蝴蝶chemical

：adj化学的Mess：n混乱factory：n工厂Shame：n羞愧Several：adj几个若干（few)Pollute:v污染–pollutionWaste：v浪费adj浪费的Villager：n村民Pour…int

o：v倒入…..WelcometoTheWestHillTwoyearsagoTherewerelotsofflowersandgrass.Wecouldseebeesandbutterfliesdancing.beebutter

flyTheWestHillwasbeautifulTheairwasfreshandthewaterwasclean.Haveyoueverhadapicnic?Kangkang,Jane,MariaandMichaelareplanningapicnicforSunday.T

heywillgototheWestHill.Theflowersandgrasshavegone!Oh,Whatamess!Look!Thereareseveralchemicalfactoriespouringwaste

waterintothestream.=havedisappeared.1bListento1aandmarkthewordswithP(Past)orN(Now).____beautiful____butterflies____dirty____g

rass____terrible____factory____bees____fresh____clean____wastewaterPPNPNNPPPN1aListen,lookandsay.1cCompletethesentencesinthetable.TwoyearsagoNow1.

Itwasa_______________.2.Therewere_______________________.3.Theairwas_______________________andyoucouldsee___________

____________.1.___________________havegone.2.Thewateris________andsmells___________.3.Thereareseveral____________

____pouring_______________intothestream.4._____________haschanged.beautifulplacelotsofflowersandgrassfres

handthewaterwascleanbeesandbutterfliesdancingTheflowersandgrasssodirtyterriblechemicalfactorieswastewaterEverythingLet’stalk!Lookatt

hepictures.Trytodescribethem.Twoyears,itplace.There.Theairandthewater,andyouButnoweverything.Theflowersandgrass.Thewaterandsmells.Whathere?Lo

ok,thereareseveralchemicalfactoriesthestream.Oh,!agowasabeautifulwerelotsofflowersandgrasswasfreshwascleancouldseebee

sandbutterfliesdancinghaschangedhavegoneissodirtypouringwastewaterintoWhatashameterriblehashappenedWhatashameLanguagepointsWhatasha

me!/whatamess!Youcanseebeesandbutterfliesdancing.Thereareseveralfactoriespouringwastewaterintothestream.感叹句see

sbdoing看见某人正在做…Pour….into把…倒入多可惜啊！一团糟！seesbdo看见某人做了…Therebe…doingsth………有……在做某事e.g._________somepeople_____(wait)forthebusatth

ebusstop.TherearewaitingTherearesomechemicalfactoriespouringwastewaterintothestreamTherebe…doingsth………有……在做某事ThereisaboyswimmingintheoceanThereareso

mebutterfliesandbeesdancingPresentperfect（现在完成时）•花和草都消失了！•这儿发生了什么?•一切都变了。结构：Have/has+done（动词过去分词）常常与always，yet,already

,never,ever,just,before搭配E.g.Ihavefoundmypenalready.Ihaven’tfoundmypenyet.IhavebeentotheGreatWall.Hehasdonehishomework.Hashedonehishomework?Thefl

owersandgrasshavegone!Whathashappenedhere?Everythinghaschanged.单项选择()1.Look!Therearesomeboys___onthepla

yground.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.pla

yD.leaveCDA用所给动词的适当形式填空。1.WhenIenteredtheroom,IsawMaria______(read)aChinesebook.2.Whatashame!Theflowersandtreesinthepark_______

__(go).3.Everything________(change)inthepastfewyears.4.Pandasdon’thaveenoughbamboos______(eat)nowbecauseofthepollution.5.—Wherehavetheybeen?—Th

ey______(be)totheGreatWall.They_______(have)agoodtimetherethedaybeforeyesterdayreadinghavegonehaschangedtoeathavebee

nhad1.Expressexclamation:Whatamess!Whatashame!2.KnowthedifferencesbetweenSimplePastandPresentperfect.Itwasabeauti

fulplace.Everythinghaschanged.1.Somewords:bee,butterfly,mess,shame,several,pour,waste,destroy,pollute,goodness2.Somephrases:seesb.doingsth.pour…into.

.3.Somesentences:Thereare…doing…Whathavewedone?NoCleanwatertodrinkDirtyairGreenhouseeffectMelting融化iceHomelessa

nimalsSavetheearth,ouronlyhomeThankyou