【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…into：v倒入…..Welcomet

oTheWestHillTwoyearsagoTherewerelotsofflowersandgrass.Wecouldseebeesandbutterfliesdancing.beebutterflyTheWestHillwasbeautifulThea

irwasfreshandthewaterwasclean.Haveyoueverhadapicnic?Kangkang,Jane,MariaandMichaelareplanningapicnicforSunday.TheywillgototheWestHi

ll.Theflowersandgrasshavegone!Oh,Whatamess!Look!Thereareseveralchemicalfactoriespouringwastewaterintothestream.=havedisappeared.1bList

ento1aandmarkthewordswithP(Past)orN(Now).____beautiful____butterflies____dirty____grass____terrible____fac

tory____bees____fresh____clean____wastewaterPPNPNNPPPN1aListen,lookandsay.1cCompletethesentencesinthetable.

TwoyearsagoNow1.Itwasa_______________.2.Therewere_______________________.3.Theairwas_______________________an

dyoucouldsee_______________________.1.___________________havegone.2.Thewateris________andsmells___________.3.Thereareseveral________________pour

ing_______________intothestream.4._____________haschanged.beautifulplacelotsofflowersandgrassfreshandthewaterwascleanbeesandbutterfliesdancing

TheflowersandgrasssodirtyterriblechemicalfactorieswastewaterEverythingLet’stalk!Lookatthepictures.Trytodescribethem.Twoyear

s,itplace.There.Theairandthewater,andyouButnoweverything.Theflowersandgrass.Thewaterandsmells.Whathere?Look,thereareseveralchemicalfactoriesthestream

.Oh,!agowasabeautifulwerelotsofflowersandgrasswasfreshwascleancouldseebeesandbutterfliesdancinghaschangedhave

goneissodirtypouringwastewaterintoWhatashameterriblehashappenedWhatashameLanguagepointsWhatashame!/whatame

ss!Youcanseebeesandbutterfliesdancing.Thereareseveralfactoriespouringwastewaterintothestream.感叹句seesbdoing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)forthebusatthebusstop.TherearewaitingTherea

resomechemicalfactoriespouringwastewaterintothestreamTherebe…doingsth………有……在做某事ThereisaboyswimmingintheoceanTherearesomebutterfliesandbeesdanci

ngPresentperfect（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.Ih

aven’tfoundmypenyet.IhavebeentotheGreatWall.Hehasdonehishomework.Hashedonehishomework?Theflowersandgrasshavegone!Whathashap

penedhere?Everythinghaschanged.单项选择()1.Look!Therearesomeboys___ontheplayground.A.playfootballB.areplayingfootballC.playingf

ootballD.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.Whatashame!Theflowersandtreesinthepark_________(go).3.Everything________(change)inthepastf

ewyears.4.Pandasdon’thaveenoughbamboos______(eat)nowbecauseofthepollution.5.—Wherehavetheybeen?—They______

(be)totheGreatWall.They_______(have)agoodtimetherethedaybeforeyesterdayreadinghavegonehaschangedtoeathavebeenhad1.Ex

pressexclamation:Whatamess!Whatashame!2.KnowthedifferencesbetweenSimplePastandPresentperfect.Itwasabeautifulplace.Everythinghascha

nged.1.Somewords:bee,butterfly,mess,shame,several,pour,waste,destroy,pollute,goodness2.Somephrases:seesb.doingsth.pour…into..3.Somesentenc

es:Thereare…doing…Whathavewedone?NoCleanwatertodrinkDirtyairGreenhouseeffectMelting融化iceHomelessanimalsSav

etheearth,ouronlyhomeThankyou