Unit5RevealingnatureDevelopingideas教学设计-高二英语选择性

Unit5RevealingnatureDevelopingideas教学设计课型Reading课时1课时主题语境人与自然——认识自然、探索自然内容分析本部分呈现了从另一角度反映单元主题的课文，语篇类型为描述性说明文，以植物界语言的奥秘为题，具体介绍了自然界中不同植物之间不同的交流方式，从而使学生通过了解神奇的自然，不仅增长了自然界知识，而且还激发了其对自然的好奇心。教学目标1.理解文章，通过完成相应的活动，掌握与主题相关的关键词汇，并能清晰叙述文本介绍的自然界植物间的几种交流方式；2.通过学习课文，使学生初步认识自然、探索自然，逐树立热爱自然的意识。教学重点1.引导学生通过阅读来把握和概括段落大意和推测作者写作意图；2.巩固过去完成时的用法。教学难点引导学生树立与自然和谐相处的积极的人生态度。教学过程Step1:LeadinWatchavideoandtick.Whatcanplantsdo?教师引导学生观看视频，讨论与植物相关的话题。Step2:PrereadingReadthepassageandfindoutthewaysinwhichplantsmunicate.在读前活动中，教师引导学生关注植物的行为，激发学生的阅读兴趣。Step3:Whilereading1.Readforstructure.Para.12:Plantscanmunicate.(Introduction)Para.35:Plantshavevariouswaystomunicate.(Body)Para.6:Scientistsarelearningmoreaboutplants’language.(Conclusion)2.Readfordetails.Para.1:Talkingplantshavelongbeenathingofmythsandlegends.Para2.isusedtoclearlyillustratethethesisstatement.It’salsoatransitionalparagraph.Para.3:UsingchemicalsPara.4:UsingsoundPara.5:Usingthe“WoodWideWeb”(“WoodWideWeb”referstoanamazingsystemofmunicationthatcanlinknearlyeveryplantinaforest.)Para.6:Conclusion3.Organiseinformationfromthepassageandpletethediagram.教师可以利用读后活动检验学生对课文结构和主要内容的理解情况。Step4:PostreadingThinkandshare.(1)Whatarethebenefitsofstudyingplantmunication？(2)Whatdiscoveriesaredescribedinthetworeadingpassagesinthisunitandwhatdotheirmeaningshaveinmon?教师提供必要的支持，鼓励学生在深入理解课文主题的同时联系自身实际，进行知识和思维能力的拓展与迁移，培养深层理解语篇、探究主题意义和高阶思维的能力。Step5:Thinking&sharing1Whatfigureofspeechisbeingusedwhentheplantsaredescribedascallingforhelp?Whatisitsfunction?2Whatdoes“woodwideweb”mean?3Whatdoyouthinkarethebenefitsofstudyingplantmunication?Answers:1.Personification.Itcanmakedescriptionsmorevivid.2.“Woodwideweb”meansanamazingsystemofmunicationthatcanlinknearlyeveryplantinaforest.Itislinkedundergroundbyfungiandthisfungalnetworklinkstherootsofdifferentplantstoeachother.Usingthewoodwideweb,plantscanshareinformationandevenfoodwitheachother.3.Passage1revealsthediscoveryofevolutionandPassage2revealsthediscoveryofmunicationbetweenplants.Theyallreflectthattherearenumeroussecretsinnaturethatremaintobeexplored.Step6:GroupworkGiveatalkaboutmunicationbetweenlivingthingsingroups.1Readthepassageagainandtalkabouthowplantsmunicate.2Thinkaboutanddiscussthefollowingwaysofmunicationintheanimalworld.•Bees“dance”tosignaltootherbeesthattheyhavefoundfood.•Antsmunicatewitheachotherthroughtouch,chemicalsignals,movingtheirbodiesandevenusingtheirlegstomakesounds.Whatotherwayscanyouthinkof?3Organiseyourideasfollowingthestepsbelow.•Beginwithwhatlivingthingsyouhavechosentotalkabout.•Explainhowtheymunicateandgiveexamples.•Concludebyexplainingwhatwehavelearntfromtheirbehaviour.4Giveatalktotheclassaboutmunicationbetweenlivingthings.Nowtalkabouthowwellyoucontributedtoyourgroupdiscussionandhelpeachothertomakeimprovements.Step7:Languagepoints1.Manycultureshavestoriesoftalkingtreesthatgiveadviceaswellaswarningstopeople.许多种文化中都有会说话的树的故事，它们会给人们建议和警告。(1)that引导定语从句，引导先行词talkingtrees。(2)aswellas也；和……一样；不但……而且a.连接并列成分，如名词、形容词、动词、介词短语等，意为“和，也；不但……而且……，既……又……”。强调的是aswellas前的成分。b.意为“除了……还”，相当于besides,inadditionto,apartfrom。后面通常接名词或v.ing形式，尤其是当其位于句首时。c.表示同级比较，意为“和……一样好”，此时well是副词。2.AlexandertheGreatandMarcoPoloweresaidtohavevisitedsuchatreeinIndia.据说亚历山大大帝和马可波罗曾在印度访问过这样一棵树。sb.besaidtodo=Itissaidthatsb....=peoplesaysb....“据说某人做了某事”e.g.Itissaidthatwewilluserobotsoncampus.据说我们将在校园里使用机器人。3.Withuslongbelievingthattalkingplantsarefantasy,newresearchhasrevealedsomethingamazing:itappearsthatplantscanmunicateafterall.长期以来，我们一直认为会说话的植物只是幻想，而最新研究却揭示了一件惊人的事情：植物似乎终究可以交流。(1)with复合结构(with+代词+doing)作状语。此处为“with的复合结构”形式，即“with+名词/代词+非谓语动词”。在此结构中，非谓语动词可以是不定式（多指动作尚未发生）、动词ing形式（多指动作正在进行）、动词ed形式（与前面的名词构成被动关系）。(2)thattalking...的that引导宾语从句。(3)itappearsthat...似乎……，it作形式主语，真正的主语是由that引导的从句。4.Theplantreleasestinyamountsofchemicalsfromtheleavesthatarebeingeaten.这种植物从正被吃掉的叶子中释放出微量的化学物质。(1)tinyamountsof微量的alarge/smallamountof大/少量的large/smallamountsof大/少量的inlargeamounts大量地amountvi.合计，共计amountto合计；共计；等同于(2)that引导定语从句，修饰先行词theleaves。5.ItisinsomewayssimilartotheInternetweuse.它在某些方面与我们使用的互联网相似。(1)insomeways在某些方面;在某种程度上alltheway 总是;一直onthe/one’sway 在……路上bytheway顺便inaway/inoneway/insomeway/ways在某种程度上innoway 决不noway 没门,不可能intheway 挡道;妨碍makeone’sway 前进havealongwaytogo有很长的路要走inthis/thatway 以……方式(2)weuse作定语修饰theInternet。Step8:SummaryHelpthestudentsretellhowplantsmunicatewitheachother.Step9:Practicepletethesummarywiththecorrectwordsorthecorrectformsofthewordsinthebracketaccordingtothepassage.Scientistsarelearningthesecretwaysinwhichplants“talk”toeachother.Ithasbeenknownforsometimethatplantsusechemicals1___________(municate)witheachother.When2___________(attack)byinsects,theplantreleaseschemicalsfromtheleavesthat3___________(eat).Thisislike4___________warning.Whenanotherplantdetectsthechemicals,itstartstorelease5___________(it)own,differentchemicals.Somechemicalsdriveinsectsaway.6___________(surprising),plant