教學(xué)設(shè)計(jì)課題：Book8Unit2CloningTeachingaims:1.Tohelpthestudentstohaveagoodunderstandingofthereadingpassage;2.Tohelpthestudentsknowtheadvantagesanddisadvantagesofcloning;3.Tohelpthestudentstobeabletodiscusssomeoftheissuesassociatedwithcloning.Teachingimportant&difficultpoints：Understandandgrasptheadvantages,disadvantagesandthefutureofcloning.Teachingmethods:Autonomouslearning,Cooperativelearning(pairwork,groupwork)Teachingaid:Acomputer,multimediaTeachingprocedure：Step1.PresentationStep2.Fast-reading1.Scanthefollowingpassageandmatchtheparagraphwiththecorrectsentence.Para1A.TheproblemsofDollyPara2B.ThetwomajorusesandproceduresofcloningPara3C.TheimpactofcloningDollyPara4D.ThedefinitionofcloningPara5E.People’sreactiontocloning2.Themainideaofthetextis______.A.Animalcloningisveryvaluableandcanbenefittheworld.B.Animalcloningcouldbemisusedbybadpeoplesoitmustbeforbidden.C.AnimalcloningiswelldevelopedbecauseDollythesheepwasborn.D.Animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture.Step3.Careful-readingTask1.(Readpara1-2):Answerthefollowingquestions.1.Whatiscloning?2.Whatarethetwomajorusesofcloning?3.Whyisiteasiertomakecommercialplantclonesthananimalclones?Task2:（Readpara3-5):Choosethebestanswer.1.Itcanbeinferredfromthepassagethataclonedanimal_____.A.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallylivesshorterthantheoriginaloneD.isusuallyashealthyastheoriginalone2.Whichofthefollowingisnotanadvantageofcloning?A.Cloningcanbeusedformedicalpurposes.B.Largequantitiesoffoodcanbeproducedbycloning.C.Cloningcanhelpkeepanimalsfrombecomingextinct.D.Famouspersonswhohavepassedawaycanbecloned.3.What’sthewriter’sattitudetowardscloning?A.SupportiveB.NeutralC.NegativeD.SubjectiveStep4.Detailed-readingTask1.★Groupwork1:DiscussingroupsandthenshowustheprocedureofthecloningofDollythesheep.TheprocedureofcloningDollythesheep:First,femalesheepAprovides_________,whosenucleusisremoved.FemalesheepBprovidesa_______cell,whosenucleuscontainsallthegenesneededtoproduceanewsheep.ThenthenucleusfromsheepBandtheeggcellfromsheepAarejoinedusing____________.Thecelldividesandgrowsintoan_______,whichisputintofemalesheepC.Soshebecomesthecarrieroftheclone.Finally,anewlamb,whichisthecloneofsheepBisproduced.Task2.Fillinthechartusingtheinformationfromthereadingpassage.ProblemsordangersofcloningAdvantagesofcloning

1.Animalclonesmaydevelopthe________ofolderanimals.

1.Medicalcloningcouldbeusedto_______seriousillnessesinhumans.

2.Animalclonesmaydie_______thanthedonoranimals.

2.Gardenerscanusecloningtoproduce_____________qualitiesplants.

3._____leadersmaywanttoclonethemselves.

3.Cloningisvaluableforresearchon___________________.

4.Thereare________questionsofcloninghumanbeings.

4.Cloningcanhelpsave__________________animalsStep5.Challengeyourself閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容（不多于3個(gè)詞）或括號(hào)內(nèi)單詞的正確形式。Cloningisawayofmaking______exactcopyofanotheranimalorplant.Cloningplantsisstraight-forward_________cloninganimalsiscomplicated.Cloninganimalsisadifficulttask_______________(undertake).Butatlastthedeterminationandpatienceofscientists___________(payoff)in1996withabreakthrough——thecloningofDollythesheep.Thefact_______Dollyseemedtodevelopnormallywasveryencouraging.Thencamethedisturbingnewsthatshehadbecomeseriouslyill.Cloningscientists______________(castdown)tofindthatDolly’sillnessesweremoreappropriatetoamuch________(old)animal.AltogetherDollylivedsixandahalfyears.Dolly’sappearanceraisedastormof___________(object)andhadagreatimpact_______themediaandpublicimagination.Itbecamecontroversial.Somegovernmentsbegantoreformtheirlegalsystemsandforbaderesearchintohumancloning,butothercountriescontinuedtoaccumulateevidenceoftheabundantmedicalaid_________cloningcouldprovide.Step7.Showyourself★Groupwork2——APressConferenceaboutcloningWorkingroupsofsix.Onestudentactsasthehost,anotherstudentactsasthecloningscientistandtheotherstudentsarethejournalists,andthejournalistscanaskanyquestionsaboutcloning.____________________________________________________________________Step7.Homework1.Readthepassageagainandunderlinethesentencesinthetextcontainingtheappositivephrases（同位語）orappositiveclauses（同位語從句）.2.Writeashortpassagewiththetitle“Myopinionsoncloning.”First,youstatetheadvantagesanddisadvantagesofcloning.Attheendofyourpassage,youcanaddyourownopinion.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________學(xué)后反思：________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________課標(biāo)分析高中英語人教版選修八是人教版系列教材的選修教材，旨在使學(xué)生在必修教材基礎(chǔ)上進(jìn)一步明確學(xué)習(xí)目標(biāo)，發(fā)展自主學(xué)習(xí)的能力和合作精神；注重對(duì)學(xué)生進(jìn)行綜合語言運(yùn)用能力的培養(yǎng)，同時(shí)注重提高用英語獲取信息、處理信息、分析問題和解決問題的能力，以及用英語進(jìn)行思維和表達(dá)的能力。不僅為學(xué)生提供豐富的選擇機(jī)會(huì)和充分的表現(xiàn)空間，還使學(xué)生的語