Unit1P1Reading1课件2024-2025学年牛津上海版（试用本）八年级英语下册

M1NatureandenvironmentTreesReading(I)U1Canyoulabelthedifferentpartsofatree?Wordbox:*leaf*branch*trunk*root*fruitleaf---leavesfruitbranch[brɑːntʃ]branches树枝trunk[trʌŋk]trunks树干root---rootsAquizabouttreesWhenistheTree-PlantingDay?February14th

March12thMarch14th

AquizabouttreesWhicharetheoldesttreesontheearth?pinetrees(松树)oaks(像树)ginkgoes(银杏树)/ˈɡɪŋkəʊ/AquizabouttreesHowlongdotreesliveonaverage?150years.4000years.70years.onaverage基本上;大体上Howlongdotheylive?Matchthelivingthingsontheleftwiththe

averageagesontheright.abcdemicetreestortoiseswhaleshumansiiiiiiivv70years150years40years4,000years3yearsWhichofthefollowingitemscomefromtrees?nutsbeanscottonoiltearubberLookatthepicturesandanswer:Whataretheydoinginthepicture?DrRayJudyDr=DoctorWhatjobdoesDrRayprobablydo?scientist[ˈsaɪəntɪst]Predict:Predict:ScientistslikeDrRay?StudentslikeJudy?Trees?Who?Readforgeneralideas（大意）:Whatdoes‘pollutionfighters’referto?Whatdotheymainlytalkabout?Itreferstotrees.Somef_____abouttrees.actsIntroductionWhomightbethereadersof

Judy'sproject?WhatdoesJudywanttoget

fromDrRay?Canshegetalltheinformation

shewantsfromDrRay?Why

doyouthinkso?Judy’steacherandherclassmates.Somefactsaboutpollution.Sheisascientistabouttrees.Shemayknowhowtreeshelpfightagainstpollutionbutshemaynotknowallaboutpollution.Readtheintroductionandanswerthefollowingquestions:Readtheinteviewandfindouttheanswers:InterviewWhyisDrRaysointerestedintrees?WhatinformationdoesJudyget

fromDrRay?They’rethebiggestandoldestlivingthingsontheEarth.InterviewWhatinformationdoesJudyget

fromDrRay?Whatgoodaretrees?Whatgoodaretrees?=Howusefularetrees?nounTreesarecommunicatingwithoneanother.communicatewith

[kəˈmjuːnɪkeɪt]

=shareinformationwithoneanother=eachotherTreesareingreatdanger.Readtheinteviewandfindtheanswers:Readandfindout:Readtheinterviewfromline1toline24andconclude:Whatdotreesdoforus?makestreetsmorebeautifulandlessnoisyprovideusefulthingsWhatdotreesdoforus?Isupposeyoualsoenjoybreathing

pure,coolair.notebook[ˈnəʊtbʊk]suppose v.[səˈpəʊz]breathe v.[briːð]pure adj.[pjʊə(r)]makestreetsmorebeautifulandlessnoisyprovideusefulthingscleantheaircooltheairnaturalairconditioners[ˈnætʃrəl][ˈeəkəndɪʃənə(r)]notebook[ˈnəʊtbʊk]Whatdotreesdoforus?Readfordetails:Howdotreescleantheair?releasev.[rɪˈliːs]=let...outnaturalaircleanersoxygen[ˈɒksɪdʒən]harmfulgases[ɡæs]Readandfindout:Readtheinterviewfromline25totheendandconclude:Whatdotreesdowithoneanother?Whyaretreesingreatdanger?Theyprotect

[prəˈtekt]themselvesfirstthenwarnothers.Doyouthinktreesare‘clever’plants?warntheirneighbours[wɔːn]v.(warningsigns)passfoodandwaterjoinrootstogetherHow?Thetreescanthenprotectthemselvesbyproducingachemicalthatmakestheirleavestastenasty.chemical[ˈkemɪkl]n.

somethingmadebychemistry[ˈkemɪstri]nasty[ˈnɑːsti]adj.

verybadorunpleasantReadandthink:Whatdopeopledotothem?burn[bɜːn]v.(burnt/burned...)

destroyorkillbyfirereplace[rɪˈpleɪs]v.(replaced...)

=taketheplaceofWecutdownandburnmillionseveryyear,butwereplacehardlyanyofthem.Readandthink:Moreexamples?Workingroupsoffour.DiscusswhatmayhappeniftherearenotreesontheEarth.WhileyoureadJudyiscollectingsomefactsforaclassprojectonpollution.SheisinterviewingDoctorRay,ascientist,abouttrees.JUDY:Whyareyousointerestedintrees,DoctorRay?DRRAY:They’rethebiggestandoldestlivingthingsontheEarth,Judy.JUDY Yes,butwhatgoodaretrees?They

makestreetsmorebeautifulandlessnoisy,butwhatelsecantheydo?DRRAY Well,thewoodinyourpencil,

therubberontheendofyour

pencil,thepaperinyour

notebookandthefruitinyour

bowlallcomefromtrees!

And,Isupposeyoualsoenjoy

breathingpure,coolair.JUDY Ofcourse.DRRAY: Thenyoumustthanktreesforthattoo. Theytakeharmfulgasesfromtheair,andreleaseoxygen backintotheair.Howmanypeoplearethereinyourclass, Judy?JUDY: Forty-six.DRRAY: Well,oneandahalfhectaresoftreescouldproduceenough oxygentokeepyourwholeclassaliveandhealthyforawhole year.JUDY: That’swonderful!DRRAY: Treescooltheairaswellascleanit. Theyarenaturalairconditioners. Threetreescandothejobof15air conditionersrunningalmostallday.[ˈhekteə(r)]

公顷JUDY Youcertainlyknowalotabouttrees,

DoctorRay.DRRAY Thankyou,Judy,butIdon’t,really.Scientistsareonlynowbeginningtounderstandthem.Forexample,wheninsectsattackatree,itcanwarnitsneighbours.Thetreescanthenprotectthemselvesbyproducingachemicalthatmakestheirleavestastenasty.Andsometreescanjointheir

rootstogetherunderground,

andpassfoodand