人教版高二英语选修8-Unit-2-Cloning-全单元教案.doc

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1、Unit2CloningTheFirstPeriodwarmingupAims1.Talkaboutcloning2.PracticeexpressingandsupportinganopinionContentsTaskone:LookingandspeakingInpairs,lookatthepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.Explainhowtheydiffer.A.DollythesheepB.Astrawberryplan

2、tC.TwinsD.IdenticaldogsTasktwo:QuestionsaboutcloningWhatisaclone?Howisacloneproduced?Whatbenefitscanhumansgainfromcloning?Whatproblemsmayarisewhenhumansarecloned?Taskthree:FreetalkInpairs,discusswhatyouunderstandaboutcloning,thenlistthequestionsyouwanttofindout.Shareyou

3、rlistswithoneanother.1.Shouldweclonehuman?2.Couldcloningreplacesexasthemeansofcreatingnewhumanlife?3.Couldaparentcloneachildwhoisdyingofaterminalillness?TheSecondPeriodReadingAims:1.HelptheSstoknowhowtodescribecloningandhowtocatchthedetailsofthetext.2.ActivatetheSstosho

4、wtheiropinionsaboutthecloningandenabletheSstowriteandarticleonthisdebate.Contents:Leadinginbyrevision.Taskone:FastreadingWhatisaclone?Showthefollowing.1.Cloningmeansmakingacopyofananimaloraplant.(F.exact…another)2.Gardenerscanmakealotofmoneybycloningplants.(T.)3.Cloning

5、animalsisascomplicatedascloningplants.(F.morethan)4.Dollythesheepwasthefirstsuccessfulcloneofamammal.(T.)5.Naturalcloneshappeninanimalsaswellasinplants.(T)Tasktwo:CarefulreadingReadthetextagain,trytoanswerthefollowingquestionsandfindoutthemainideaofeachparagraph.Questio

6、ns:1.What’sthemainideaofthetext?2.Howmanyyearsdidthesheepthatdonatedthesomaticcellmostprobablylive?3.WhydidtheCloningofDollythesheepsucceed?4.Whatdoestheword‘straightforward’meaninthesecondparagraph?5.Whatisthewriter’sattitudetowardcloninginthispassage?Themainideaofeach

7、paragraph:Para.1Cloningisawayofmakingancopyofanotheranimalandplant.Para.2Cloninghastwomajoruses.Para.3TheproblemsofDolly.Para.4TheeffectofDolly.Para.5Itisforbiddentoclonehumanbeing.Taskthree:Notesfordebating:Shouldweusecloning?Argumentforcloning:Cloningwillbebeneficialt

8、ohumansWecouldusecloningtocureillnesses.Argumentsagainstcloning:healthyrisksformmutationofgenesemotionalrisksa