Unit 8.docx
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Unit 8.docx
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Unit8
Unit8Cloning
I.SuggestedTeachingPlan
(6periods)
Objectives
Studentswillbeableto:
1.understandthemainidea(cloningisatwo-edgedsword)andstructureofthetext;
2.appreciatethewritingstrategiesemployedbytheauthor;
3.masterthekeylanguagepointsandgrammaticalstructuresinthetext;
4.conductaseriesofreading,listening,speakingandwritingactivitiesrelatedtothethemeoftheunit
Timeallotment
1stperiod:
Pre-reading;While-reading(PartI)
2ndperiod:
While-reading(PartI,PartII)
3rdperiod:
While-reading;
4th&5thperiod:
Post-reading;.Checkon5s'homereading(TextB)
6thperiod:
Theme-RelatedLanguageLearningTasks
Pre-readingtasks
1.Tasks5sthefollowingquestionsontherecordedinterview:
(5minutes)
-WhatdoesProf.Greelythinkofhumancloning?
(Wemustdistinguishdifferenttypesof
humancloning.Somearejustified;othersarenot.)
-Whatisthegreatestproblemwithhumanreproductivecloning?
(safety)
2.Out-of-classresearchproject(30minutes)
1)Theresearchprojectshouldbeassignedattheendofthelastunit.SsformgroupstouselibraryresourcesandInternetresourcestogetanswerstothefollowingquestions:
-Whatiscloning?
-Giveabriefhistoryofthescientificresearchintocloning.
-Whatarethemajorprosandconsofhumancloning?
-Duringyourresearch,whatnewvocabularyitemshaveyoucomeacrossthatarerelatedtocloning?
2)Groupsreporttoclass.Tosavetimeandgivepresentationopportunitiestomoregroups,no
onegroupneedanswerallthequestions.Agroupmembermaywritedownnewvocabulary.items(inbothEnglishandChinese)ontheblackboardwhileanothermemberispresenting.:
3.Tmayleadintothetextbysaying:
Bynowmanyofyoumayhavealreadyformedyourownideaabouthumancloning,butlet'srefrainfromopinionsforthemoment.TheauthorofTextAisasciencereporter.Likeagoodjournalist,let'sfirstmakethefactsclear.(2minutes)
While-readingtasksI
1.PartI(70minutes)
1)Ssscanthefirstthreeparagraphstoseewhereatensechangetakesplace.Bythusdoingtheywillseethatthefirsttwoparagraphsactasintroductiontothewholeessay.
2)TasksSsthefollowingquestions:
-ThisisapieceofjournalisticwritinglikeTextA,Unit7.Whatimportantroledobeginningparagraphsplayinjournalisticwriting?
-Whydidn'ttheauthorstartfromtheverybeginningofcloningresearch,butstartwiththe
birthofDolly?
(seeTextAnalysis)
3)TexplainslanguagepointsinPartIandgivesSspractice(seeLanguageStudy).
4)Sssumupthemain-ideaofPartI.
2.TexplainslanguagepointsintherestofthetextandgivesSspractice(seeLanguageStudy).
(70minutes)
3.SsdoTextOrganizationExercises1and2.(25minutes)
1.Learningaboutwritingstrategy(40minutes)
1)SsreadWritingStrategyinthisunit.
2)Ssdotheafter-textstructureexerciseon"Itistrue...,but..."and"True...,but...",sothat
theyrealizethisisoneformofconcession.,
3)TremindsSsthatthisisapieceofjournalisticwriting,theauthorofwhichmustrefrainfrom
passingjudgment.He/Sheconcedestoachieveobjectivity.
4)Ssfindotherexamplesofbalanced,objectivewriting.(seeTextAnalysis)
2.TguidesSsthroughsomeafter-textexercises.(35minutes)
3.TchecksonSs'homereading(TextB).(3minutes)
4.SsdoPartIV:
Theme-RelatedLanguageLearningTasks.(1period)
ll.TextAnalysis
ThistexthassomefeaturesincommonwithTextA,Unit7:
aneye-catchingintroductionandobjectivity
ThetextstartswiththebirthofDolly,becauseitisacriticalpointincloningresearch.Readerinterestisfurtherarousedbythelow-keytone.Whynoexcitement,whynochampagne,whywerefewpeoplearound?
Readersarethenreadytobetoldanobjectiveaccountabouthumancloning.
The"father"ofDollyislevel-headedabouthisachievement,soistheauthor.ShequotesWilmutandOppenHeimertoshowhow"sciencecanbeadouble-edgedsword.BeforelistingthemanybenefitsofhumancloninginPartIV,shefirstidentifiestheethicalproblemsinvolvedinPartIII.Inherarticlesheasksmanyquestions,towhichshegivesnoanswer.Ifshesaidthatthereweredefiniteanswers,shewouldnotbeobjective..
However,comparedwithTextA,Unit7,thewordchoiceismoreelaborate;.sentencesandparagraphsgrowlongerandmorecomplex.Afterall,thisisaboutscienceandethics!
III.CulturalNotes
1.clone:
agroupoforganismsorcellsthataregeneticallyidentical,havingbeenproducedfromoneparentbyasexualreproduction.Theindividualorganismsorcellsareprecisecopiesoftheparentandgeneticallyidenticaltoit.Clonesarefoundnaturallyamongsingle-celledorganisms(suchasbacteria),afewinvertebrates(suchascorals),andsomeasexuallyreproducingplants{as
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