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1、2019-2020年高中英语Unit2第1课时TheFirstPeriodReading教案新人教版选修8Teachinggoals教学目标1.Targetlanguage目标语言a.重点词汇和短语clone,mercial,producer,undertake,arbitrary,object,forbid,accumulate,castdown,objectto,themedia,infavourofb.重点句子Itisawayof...Thefactisthat...Thequestiontha
2、toccurred...2.Abilitygoals能力目标Enablethestudentstodescribecloning:Whatistheadvantagesofcloning？Whatistheproblemsordangersofcloning？Whatisyouropinionofcloning？3.Learningabilitygoals学能目标Helpthestudentslearnhowtodescribecloning.Teachingimportantpoints教学重点Ho
3、wtodescribecloning.Teachingdifficultpoints教学难点Helpthestudentsanalyzethewritingtechniquesofthearticle.Teachingmethods教学方法Skimming,task-basedmethodanddebatemethod.Teachingaids教具准备Arecorder,aprojectorandsomeslides.Teachingprocedures&&ways教学过程与方式StepILead-i
4、nThistopicisdifficultforstudents.Soteachershouldhelpthestudentslearnmoreaboutit.Dothisinthewayofaskingandansweringquestions.T:Youcanimaginehowrapidlythemodernscienceandtechnologydevelop.Ithinkmostofyoumustknowsomethingaboutspacetraveling,submarineexplor
5、ation,robot,maglevtrain,geneengineeringetc.Butinrecentyears,ahottopic,cloningisoftenmentioned,especiallywhenthecloningDollythesheepappeared.YoumayhavefirstheardofcloningwhenDollytheSheepshoweduponthescenein1997.Cloningtechnologieshavebeenaroundformuchlo
6、ngerthanDolly,though.Firstthingfirst,whatiscloningandaclone?Thedictionarysayscloningisthetechniqueofproducingageneticallyidenticalduplicateofanorganism.Acloneissaidtobealldescendantsderivedasexuallyfromasingleindividual,asbycuttings,bulbs,byfission,bymi
7、tosis,orbyparthenogenesisreproduction.Itsoundsverydifferentandplicatedtous.Infact,Imean,inourdailylife,thishappensoften.Forexample,gardenerstakecuttingsfromgrowingplantstomakenewones.Youoftenseethatyourmotherpicksasmallbranchfromagrowingplanttomakeanewo
8、ne.Ifshelikesthiskindofflowers,shecandocloning.Cloningalsohappensinanimalsorhumanbeingswhentwinsidenticalinsexandappearanceareproducedfromthesameoriginalegg.Thefactisthatcloningplantsisstraightforwardbutthecloningofanimalsismorep
