高中英语 unit2 cloning 第4课时导学案 新人教版选修8

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1、河北省唐山市开滦第二中学高中英语Unit2Cloning第4课时导学案新人教版选修8Teachingaim:掌握科普文章的阅读方法Teachingkeypointsanddifficulty动名词的复合结构学习过程：Step1:Choosethebestanswerafterreading.1.ThefilmJurassicParkispopularbecause_____.A.peopleareinterestedinthesubjectofcloningB.alltheactorsaredinosaursC.itwasdirectedbyascientistwhoclonesd

2、inosaursD.itprovesveryinteresting2.Thewriterofthetext_____A.isexcitedbythepossibilityofcloningfierceandextinctanimalsB.believesthatextinctanimalscanbebroughtbacktolifebycloningC.thinksitimpossibleorunsuitabletocloneextinctanimalslikedinosaursD.dreamsofdinosaursreturningtotheearth3.Wecaninferfr

3、omthetextthat____A.scientistsareexperimentingtoclonedinosaursB.dinosaurswillneverreturntotheearthC.clonedanimalswillonlyliveinthezooD.theDNAofdinosaurscanonlysurvive10000yearStep2:Readthetext,thentellthefollowingsentencesaretrueorfalse.1.Scientistsarestillexperimentingwithcloningmammalsbecause

4、theythinkitcanmakemoney.2.Theanimalsthathavedisappearedfromtheearth,likedinosaurs,canbebroughtbacktolifethroughcloning.3.Ifwecancloneanyextinctanimals,weshouldletthemliveinazoo.Step3:GivesomereasonswhyitiseitherimpossibleorunsuitabletocloneextinctanimalsReason1:Reason2:Reason3:Step4:Diversityi

5、nagroupofclonedanimalsAdvantageofdiversityDisadvantageofdiversityStep5:knowleagepoints1.strike1)撞；碰；撞击；碰撞Shefell,strikingherheadagainstthesideoftheboat.她摔倒时头撞在船舷上。2)打；击Onemanwasstruckontheheadwithastick.一名男子头部遭到棍击。3)击打，踢(球等)Hestrucktheballintothebackofthenet.他射出的球直入网底。4)(想法，念头)突然想到；一下子想起；猛地意识到

6、Anideasuddenlystruckme.我心中忽然产生了一个念头。Itsuddenlystruckmethatweoughttomakeanewplan.5.bestruckby/on/withsb/sth被某人(或某物)打动；迷恋某人(或某物)Iwasstruckbyherbeauty.她的美貌给我留下了深刻的印象。6)(疾病，灾难)侵袭；爆发Theareawasstruck/hitbyanoutbreakofcholera.那一地区爆发了霍乱。7)(钟)敲，鸣，报时Theclockstrucknine.钟敲了九下。8)罢工Theworkerswerestrikingbec

7、ausetheywantedmoremoney.工人们在罢工，因为他们要求增加工资。9)擦，划(火柴)；击出火星Thematchesweredampandhecouldn'tmakethemstrike.火柴受潮了，他划不着。10)onstrike在罢工Mostoftheemployeeswereonstrike.许多雇员在罢工。11)strike...intoone'sheart使……刻骨铭心Theghoststorystruckfearintotheheartso