人教版英语选修8 Unit2 Cloning--Period1.doc

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Unit2Cloning
Period1Asamplelessonplanforreading
(CLONING：WHEREISITLEADINGUS?)
Introduction
Inthisperiod,afterthewarmingup,studentswillfirstbeguidedtopre-readthetextbyquestioningandanswering.Thentheyshallreadaloudtotherecording,readforforms,readforthetypeofwritingandsummaryofCLONING：WHEREISITLEADINGUS?.Thestudentswillbeaskedtocopyusefulexpressionsandmakesentences,readandtransformandreadthetextagaintodrawadiagramofitandretellthestorywithyourownwords.TheperiodwillendinstudentslearningmoreaboutDolly.
Objectives
Tohelpstudentsunderstandthetext’sformsandcontentsandlearnaboutcloning
Tohelpstudentscommunicateonthetopicinfocuswiththewords,expressionsandstructureslearnedinthisunit
Focus
Wordsclone，differ，undertake，cast，forbid，accumulate，retire，bother，
resist，restore，obtainCollocationsobjectto，infavourof，payoffPatterns1.Italsohappensinanimalswhentwinsidenticalinsexandappearanceareproducedfromthesameoriginalegg.
2.Firstly,gardenersuseitallthetimetoproducecommercialquantitiesofplants.
3.ThencamethedisturbingnewsthatDollyhadbecomeseriouslyill.
4．Thequestionthatoccurredtothescientistswas：“Wouldthisbeamajordifficultyforallclonedanimals？”
5．Newspaperstoldstoriesofevilleadershopingtoclonethemselvesandreligiousleadersraisedmoralquestions.Aids
Multimediafacilities,tape-recorder,photos,diagrams
Procedures
1.Warmingupbyleaningtheword“clone”
ScientistinScotlandgrows"HYPERLINK"http://whyfiles.org/034clone/main1.html"impossible"sheepfromonecellofanothersheep.clone
n.
1.Acell,groupofcells,ororganismthatisdescendedfromandgeneticallyidenticaltoasinglecommonancestor,suchasabacterialcolonywhosemembersarosefromasingleoriginalcell.
2.Anorganismdescendedasexuallyfromasingleancestor,suchasaplantproducedbylayeringorapolypproducedbybudding.
3.ADNAsequence,suchasagene,thatistransferredfromoneorganismtoanotherandreplicatedbygeneticengineeringtechniques.
4.Onethatcopiesorcloselyresemblesanother,asinappearanceorfunction:"filledwithbusiness-schoolclonesingrayandbluesuits"MichaelM.Thomas.
v.c