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Objectives1.学习了解“18世纪和19世纪的植物探索”、“花朵及其动物传媒”、“热带雨林的毁灭”、“一个有关植物的实验”等内容。2.学习表达情感（惊奇、厌恶）的用语。3.学习掌握本单元的词汇。4.复习掌握宾语的用法。Howmuchdoyouknowaboutplants?Canyoutellthenameoftheflower?TulipTulipsarebeautifulflowersandpeopleoftensendthemtotheirfriendsaspresents.tulip郁金香PeonytheChinesenationalflowerpeony牡丹SunflowerItcomesfromNorthAmerica.Indianstherebegantogrowthemsome3000yearsago.sunflower向日葵RoseRosesarebestpresentstobesenttofriends.Anditisalsoverypopulartosendrosesaslovesignalbetweenyoungpeople.Redrosesindicatewarmthandloveandwhiteones,purityandsimplicity,blueones,honestyandsincerity.rose玫瑰Whichisyourfavoriteflower?Why?DISCUSSION:Didyouknowthat:1.someplantsdonothaveflowers?2.someplantshaverootsthatliveintheair?3.someplantseatmeat?4.someplantsneedanimalstopollinatethem?5.someplantsgrowonotherplants?6.plantsareadaptedtoliveinspecificenvironments?7.peoplebuyplantsthatcomefromothercountriesfortheirgardens?8.anewplantdoesnotalwaysgrowfromaseed?SpecialplantsDoyouhaveacourtyardgardenorsomepotplantsonyourbalcony?Doyouknowwheretheseplantscomefrom?AretheyChineseplantsordotheycomefromanothercountry?Whenyoulastvisitedapublicgarden,didyoulookattheindividualplantsthere?Werethereanyplantsfromothercountries?Howdoyouthinkplantshavetravelledfromonecountrytoanother?Scanthetitleofthereadingpassageandthepicturesandpredictwhatitisabout?Plantexplorationinthe18thand19thcenturiesPlantexplorationinthe18thand19thcenturiesIt’saboutwhatwhenButwho?Andwhatexactlydidtheydo?SirJosephBanks(1743–1820)Collecting“exotic(外来的)”plantsanEnglishnaturalist,botanistandpatronofthenaturalsciences.HetookpartinCaptainJamesCook'sfirstgreatvoyage(1768–1771).DrNathanielWard’sinventionTheWardiancaseRobertFortune(1812-1880)RobertFortuneAScottishbotanistandtravellerknownforintroducingteaplantsfromChinatoIndia.ThroughhisuseoftheWardiancase,Fortunewasabletointroducemanyofthebest-knownChinesegardenplantsintocultivationinEuropeandNorthAmerica.PèrePaulGuillaumeFarges(1844-1912)Father(神父)FargesFrenchmissionaryandnaturalist.BornatMonclar-de-Quercy,Tarn-et-Garonne.HewassenttoChinain1867andremainedstationedinnorth-eastSichuanuntil1903.Althoughhehadalwaysnurturedaninterestinthelocalflora(植物群)andfauna(动物群),itwasnotuntil1892thathestartedtocollectherbariumspecimensinearnest.DuringtheelevenyearsbeforehemovedsouthtoChongqing,hecollectedandpreservedover4,000specimens.DoveTreeErnestHenryWilson(1876-1930)betterknownasE.H.Wilson,wasanotableEnglishplantcollectorwhointroducedalargerangeofabout2000ofAsianplantspeciestotheWest;somesixtybearhisname.