Unit1P1Reading1課件2024-2025學(xué)年牛津上海版（試用本）八年級(jí)英語下冊(cè)

M1NatureandenvironmentTreesReading(I)U1Canyoulabelthedifferentpartsofatree?Wordbox:*leaf*branch*trunk*root*fruitleaf---leavesfruitbranch[brɑ?nt?]branches樹枝trunk[tr??k]trunks樹干root---rootsAquizabouttreesWhenistheTree-PlantingDay?February14th

March12thMarch14th

AquizabouttreesWhicharetheoldesttreesontheearth?pinetrees(松樹)oaks(像樹)ginkgoes(銀杏樹)/?ɡ??k??/AquizabouttreesHowlongdotreesliveonaverage?150years.4000years.70years.onaverage基本上;大體上Howlongdotheylive?Matchthelivingthingsontheleftwiththe

averageagesontheright.abcdemicetreestortoiseswhaleshumansiiiiiiivv70years150years40years4,000years3yearsWhichofthefollowingitemscomefromtrees?nutsbeanscottonoiltearubberLookatthepicturesandanswer:Whataretheydoinginthepicture?DrRayJudyDr=DoctorWhatjobdoesDrRayprobablydo?scientist[?sa??nt?st]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

[k??mju?n?ke?t]

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

pure,coolair.notebook[?n??tb?k]suppose v.[s??p??z]breathe v.[bri?e]pure adj.[pj??(r)]makestreetsmorebeautifulandlessnoisyprovideusefulthingscleantheaircooltheairnaturalairconditioners[?n?t?r?l][?e?k?nd???n?(r)]notebook[?n??tb?k]Whatdotreesdoforus?Readfordetails:Howdotreescleantheair?releasev.[r??li?s]=let...outnaturalaircleanersoxygen[??ks?d??n]harmfulgases[ɡ?s]Readandfindout:Readtheinterviewfromline25totheendandconclude:Whatdotreesdowithoneanother?Whyaretreesingreatdanger?Theyprotect

[pr??tekt]themselvesfirstthenwarnothers.Doyouthinktreesare‘clever’plants?warntheirneighbours[w??n]v.(warningsigns)passfoodandwaterjoinrootstogetherHow?Thetreescanthenprotectthemselvesbyproducingachemicalthatmakestheirleavestastenasty.chemical[?kem?kl]n.

somethingmadebychemistry[?kem?stri]nasty[?nɑ?sti]adj.

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

destroyorkillbyfirereplace[r??ple?s]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.[?hekte?(r)]

公頃JUDY Youcertainlyknowalotabouttrees,

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

rootstogetherunderground,

andpassfoodand