Unit2Cloning第3課時教學(xué)設(shè)計Teachingaim:掌握科普文章的閱讀方法及策略TeachingkeypointsanddifficultyHelpstudentsanalyzethereadingtechniqueofthearticle.Teachingperiods一課時學(xué)習(xí)過程：Newwords:預(yù)習(xí)下列單詞，并會默寫1.精確的2.商業(yè)的3.坦率的4.著手，承擔5.突破6.程序，步驟7.攜帶者8.總共9.任意的10.修改，改正11.反對12.媒介13.獲得，贏得14.獲得，到達15.道德的16.保守的，守舊的17.禁止18.積累Step1:Findoutthemainideaofeachparagraph.Para1.Para2.Para3.Para4.Para5.(a)Cloninghastwomajoruses.(d)TheproblemsofDolly.(b)TheeffectofDolly.(c)Itisforbiddentoclonehumanbeings.(e)Cloningisawayofmakinganexactcopyofanotheranimalandplant.Step2:Readthepassagequicklyandfinishthefollowingcomprehensiveexercises.Choosetherightansweraccordingtothetext.thesheep_____.A.lookedexactlylikethesheepthatprovidestheegg.B.wastheexactcopyofthesheepthatprovidesthenucleus.C.lookedlikethesheepthatgavebirthtoit.D.hadthecharacteristicsofallthreesheep.2.Itcanbeinferredfromthepassagethataclonedanimal_____.

A.usuallylivesaslongastheoriginalone

B.usuallyliveslongerthantheoriginalone

C.usuallyliveslongerthantheoriginalone

D.isusuallyashealthyastheoriginalone3.Whichofthefollowingisnotanadvantageofcloning?Cloningcanbeusedformedicalpurposes.Largequantitiesoffoodcanbeproducedbycloning.Cloningcanhelpkeepanimalsfrombecomingextinct.Famouspersonswhohavepassedawaycanbecloned.canusetheskillofcloningto__________.A.bringaboutglobalpeaceB.createotherfamousscientistsC.improvethedevelopmentoflearninglanguageD.curesomespecialdiseases5.Whatarepeoplecloningnow?__________A.Theyarecloningtrees,cropsaswellasanimalsB.TheyarecloningbooksandmachinesC.TheyarecloninghumansandanimalsD.TheyarecloningplantsandscienceStep3:Detailreading

Fillinthechartusingtheinformationfromthetext.(1)Problemsordangersofcloning:a)Animalsmay____________________ofolderanimals.b)Animalclonesmay____________thanthedonoranimalsc)___________maywanttoclonethemselves.d)Thereare___________________tocloninghumanbeings.(2)Advantagesofcloninga)Medicalcloningcould_____________forseriousdegenerative(變質(zhì)的）________inhumans.b)Cloningplantscan_____________ofsimilar______________________.c)Cloningplantscanbe_____________forresearchonnew________________.d)Cloningcanhelpsave____________________Ⅰ.課文詞匯等填空（旨在復(fù)習(xí)本課文中的單詞拼寫和主要詞語等）根據(jù)課文內(nèi)容完成下面語法填空，注意單詞拼寫和詞語用法：Cloningisawayof_____1_____(make)anexactcopyofanotheranimalorplant.Cloninghastwo___2____(主要的)uses.Firstly,gardenersuseittoproduceplants.Secondly,itis____3_____(value)formedicalresearchonanimals.Cloningplantsisstraightforwardbutthecloningofanimalsismore____4______(復(fù)雜的).Theprocedureisdifficultto____5_____(開展).In1996,scientistssucceededin___6_____(clone)Dollythesheep.ThencamethedisturbingnewsthatDollywasill._____7______Dollylivedforsixyears,Dolly’sappearanceraisedastormof_____8_____(object).Governmentbecamenervousandmany______9______(禁止)researchintohumancloning.Scientistsstill____10______whethercloningwillhelporharmusandwhereitisleadingus.小結(jié)與反思家庭作業(yè)(獨立完成后再看參考答案)II.課文佳句背誦與仿寫（旨在培養(yǎng)對難句的理解和寫作能力）1.【原句】Thefactthatsheseemedtodevelopnormallywasveryencouraging.多莉看來是在正常地成長著，這很令人鼓舞。[模仿要點]句子結(jié)構(gòu)：同位語從句【模仿1】學(xué)校取消體育運動的想法非常令人喪氣，依我的觀點，這并不能防止學(xué)生受傷。_______________________________________________________________________________________________________________________________________________________________________________________________________【模仿2】諺語“誠為上策”是眾所周知的，它說明了誠實的重要性。__________________________________________________________________________________________________________________________________________2．【原句】Theadvantageisthatifthereisanewillnesssomeoftheseanimalsmydie,butotherswillsurviveandpassontheabilitytoresistthatdiseasetothenextgeneration.其優(yōu)點是，如果發(fā)生了某種新的疾病，這類動物可能會死去，而另外一些卻能存活下來，并且把這種抗疫力傳給下一代。[模仿要點]句子結(jié)構(gòu)：表語從句+條件句,【模仿1】網(wǎng)上購物的弊端是，如果你在網(wǎng)上買了質(zhì)量差的商品，你不可能會換的了；但你可以在真正的商店里精挑細選。________________________________________________________________________________________________________________________________________________________________________________________________________________【模仿2】早起的優(yōu)勢是，如果我們早起，我們將有機會享受清新的空氣和早晨的寧靜，但并不是每個人都認為這是令人遺憾的事情。_________________________________________________________________________________________________________________________________________________________________________________________________________________3.【原句】Basedonwhatweknownow,youcannotcloneanimalsthathavebeenextinctlongerthan10,000years.就我們現(xiàn)在所知，你不可能克隆那些絕種了一萬年以上的動物。[模仿要點]句子結(jié)構(gòu)：V-ed+what引導(dǎo)的賓語從句，+主句+定語從句【模仿1】根據(jù)調(diào)查所示，我們可以更好地理解我們對大自然所做的一切。___________________________________________________________________________________________________________________________________________________【模仿2】根據(jù)我們所讀到的，我們可以得出結(jié)論是人類該對環(huán)境污染負責。___________________________________________________________________________________1.【模仿1】答案：Theideathatschoolscancelsportactivitiesisverydiscouraging,which,inmyopinion,isnotagoodwaytopreventstudentsfromgettinghurt.【模仿2】答案：Theoldsayingthathonestyisthebestpolicyiswellknowntoeveryone,whichsignifiestheimportanceofhonesty.2.【模仿1】答案：Thedisadvantageofshoppingonlineisthatifyouboughtapoorlymadego