Unit5RevealingnatureDevelopingideas教學(xué)設(shè)計(jì)-高二英語選擇性

Unit5RevealingnatureDevelopingideas教學(xué)設(shè)計(jì)課型Reading課時1課時主題語境人與自然——認(rèn)識自然、探索自然內(nèi)容分析本部分呈現(xiàn)了從另一角度反映單元主題的課文，語篇類型為描述性說明文，以植物界語言的奧秘為題，具體介紹了自然界中不同植物之間不同的交流方式，從而使學(xué)生通過了解神奇的自然，不僅增長了自然界知識，而且還激發(fā)了其對自然的好奇心。教學(xué)目標(biāo)1.理解文章，通過完成相應(yīng)的活動，掌握與主題相關(guān)的關(guān)鍵詞匯，并能清晰敘述文本介紹的自然界植物間的幾種交流方式；2.通過學(xué)習(xí)課文，使學(xué)生初步認(rèn)識自然、探索自然，逐樹立熱愛自然的意識。教學(xué)重點(diǎn)1.引導(dǎo)學(xué)生通過閱讀來把握和概括段落大意和推測作者寫作意圖；2.鞏固過去完成時的用法。教學(xué)難點(diǎn)引導(dǎo)學(xué)生樹立與自然和諧相處的積極的人生態(tài)度。教學(xué)過程Step1:LeadinWatchavideoandtick.Whatcanplantsdo?教師引導(dǎo)學(xué)生觀看視頻，討論與植物相關(guān)的話題。Step2:PrereadingReadthepassageandfindoutthewaysinwhichplantsmunicate.在讀前活動中，教師引導(dǎo)學(xué)生關(guān)注植物的行為，激發(fā)學(xué)生的閱讀興趣。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.教師可以利用讀后活動檢驗(yàn)學(xué)生對課文結(jié)構(gòu)和主要內(nèi)容的理解情況。Step4:PostreadingThinkandshare.(1)Whatarethebenefitsofstudyingplantmunication？(2)Whatdiscoveriesaredescribedinthetworeadingpassagesinthisunitandwhatdotheirmeaningshaveinmon?教師提供必要的支持，鼓勵學(xué)生在深入理解課文主題的同時聯(lián)系自身實(shí)際，進(jìn)行知識和思維能力的拓展與遷移，培養(yǎng)深層理解語篇、探究主題意義和高階思維的能力。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.許多種文化中都有會說話的樹的故事，它們會給人們建議和警告。(1)that引導(dǎo)定語從句，引導(dǎo)先行詞talkingtrees。(2)aswellas也；和……一樣；不但……而且a.連接并列成分，如名詞、形容詞、動詞、介詞短語等，意為“和，也；不但……而且……，既……又……”。強(qiáng)調(diào)的是aswellas前的成分。b.意為“除了……還”，相當(dāng)于besides,inadditionto,apartfrom。后面通常接名詞或v.ing形式，尤其是當(dāng)其位于句首時。c.表示同級比較，意為“和……一樣好”，此時well是副詞。2.AlexandertheGreatandMarcoPoloweresaidtohavevisitedsuchatreeinIndia.據(jù)說亞歷山大大帝和馬可波羅曾在印度訪問過這樣一棵樹。sb.besaidtodo=Itissaidthatsb....=peoplesaysb....“據(jù)說某人做了某事”e.g.Itissaidthatwewilluserobotsoncampus.據(jù)說我們將在校園里使用機(jī)器人。3.Withuslongbelievingthattalkingplantsarefantasy,newresearchhasrevealedsomethingamazing:itappearsthatplantscanmunicateafterall.長期以來，我們一直認(rèn)為會說話的植物只是幻想，而最新研究卻揭示了一件驚人的事情：植物似乎終究可以交流。(1)with復(fù)合結(jié)構(gòu)(with+代詞+doing)作狀語。此處為“with的復(fù)合結(jié)構(gòu)”形式，即“with+名詞/代詞+非謂語動詞”。在此結(jié)構(gòu)中，非謂語動詞可以是不定式（多指動作尚未發(fā)生）、動詞ing形式（多指動作正在進(jìn)行）、動詞ed形式（與前面的名詞構(gòu)成被動關(guān)系）。(2)thattalking...的that引導(dǎo)賓語從句。(3)itappearsthat...似乎……，it作形式主語，真正的主語是由that引導(dǎo)的從句。4.Theplantreleasestinyamountsofchemicalsfromtheleavesthatarebeingeaten.這種植物從正被吃掉的葉子中釋放出微量的化學(xué)物質(zhì)。(1)tinyamountsof微量的alarge/smallamountof大/少量的large/smallamountsof大/少量的inlargeamounts大量地amountvi.合計(jì)，共計(jì)amountto合計(jì)；共計(jì)；等同于(2)that引導(dǎo)定語從句，修飾先行詞theleaves。5.ItisinsomewayssimilartotheInternetweuse.它在某些方面與我們使用的互聯(lián)網(wǎng)相似。(1)insomeways在某些方面;在某種程度上alltheway 總是;一直onthe/one’sway 在……路上bytheway順便inaway/inoneway/insomeway/ways在某種程度上innoway 決不noway 沒門,不可能intheway 擋道;妨礙makeone’sway 前進(jìn)havealongwaytogo有很長的路要走inthis/thatway 以……方式(2)weuse作定語修飾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