高中英语2.1Unit 2　Cloning优秀课件 新人教版选修8

,新课标人教版课件系列,高中英语选修(模块）8-2.1,EnglishSongEnglishClassLanguageDataBank,课时分配,Period1tobeimprovedB.which;tobeimprovedC.where;tobeimprovedD.when;improving,解析：答案为A.that引导同位语从句说明“新问题”的内容。Need后既可接动名词的主动式，也可接动词不定式的被动式作宾语。,3.Theresafeelinginme_wellneverknowwhataUFOisnotever.(2002年上海)A.thatB.whichC.ofwhichD.what,解析：答案A。同位语从句thatwellneverknowwhataUFOisnotever作afeeling的同位语，解释afeeling的具体内容。That连接同位语从句时，只起连接作用，不作从句的任何成分。,4.Informationhasbeenputforward_moremiddleschoolgraduateswillbeadmittedintouniversities.(2001年上海)A.whileB.thatC.whenD.as,解析：答案B。That引导从句作information的同位语，解释information的具体内容。,5.ThesewildflowersaresospecialIwoulddo_Icantosavethem.(NMET2000春季北京)A.whateverB.thatC.whichD.whichever,解析：答案A。do后接宾语从句，宾语从句Ican后省略了do，缺少宾语。Whatever在宾语从句中作宾语。,Finishthefollowingexercises:1.Hiscentralideais_thelosersdonotwritehistory.A.XB.becauseC.thatD.whether2.Ithink_certainthatshewilldowellinherexam.A.thatB.thisisC.itD.whats,3.Weshouldstickto_istrue.A.whichB.thatC.anythingwhichD.whatever4.Youwillfindnomistake_Ivewritten.A.whatB.inwhatC.withwhatD.that,新课标人教版课件系列,高中英语选修(模块）8,5.Thereisaruleinourschool_nooneispermittedtosmoke.A.whereB.whichC.thatD.what6.Hedidntknowwhichroom_.A.theylivedB.theylivedinC.didtheyliveD.didtheylivein,Assignment,1.SummarizetherulesofthePassiveVoice.2.Finishtheexercisesof“Discoveringusefulstructures”onPage22andPage64-65.,Takeabreak!,Period4ReadingII,Unit2Cloning,Period4:幻灯片49-61页,Warmingup(4ms),Answerthefollowingquestions:1.Doyoulikedinosaurs?Wherehaveyouseenthem?Canyouseetheminourreallife?Why?2.Doyouthinkitispossibletoclonedinosaurs?Ifyes,doyouthinkthatsgoodforhumanbeings?Why?(Studentsgivetheirownanswers.),Reading-Iscanning(5ms),Readthetext,thentellthefollowingsentencesaretrueorfalse.(Studentscandiscussinpairs.),Scientistsarestillexperimentingwithcloningmammalsbecausetheythinkitcanmakemoney.Theanimalsthathavedisappearedfromtheearth,likedinosaurs,canbebroughtbacktolifethroughcloning.Ifwecancloneanyextinctanimals,weshouldletthemliveinazoo.,F,F,F,Reading-IIDetailreading(6ms),Readthetext,thenanswerthefollowingquestions.(Studentscandiscussinpairs.),Whyshouldtyoucloneanextinctanimalunlessthereisenoughdiversityinthegroup?Whyisitwrongtocloneanextinctanimalifitwouldhavetoliveinazoo?WhycantyouclonetheDNAofanimalsthathavebeenextinctlongerthan10,000years?,Whyshouldtyoucloneanextinctanimalunlessthereisenoughdiversityinthegroup?Therewillnotbeenoughgeneticvariationinthegrouptobeabletoresistnewillnesses.,2.Whyisitwrongtocloneanextinctanimalifitwouldhavetoliveinazoo?Itisnotagoodideatocloneananimalthatwouldhavetoliveinazoobecauseitisnotasuitablehabitattodevelopandincreaseitsnumbers.Thezooisnotanaturalenvironmentforawildanimal.,3.WhycantyouclonetheDNAofanimalsthathavebeenextinctlongerthan10,000years?TheDNAofanimalsmorethan10,000yearsoldisnotsuitableforcloning,foritcantsurvivesolong.,Reading-IIIArgument(10ms)1.ReadthepassageagainandhaveaargumentaccordingtotherequirementofEx.2onPage16.2.Studentsworkingroups,whendiscussing,theheadofeachgroupshouldwritedowntheopinionsofallthemembers.3.Asksomevolunteerstoshowtheiropinions.,Reading-IVReadingonPage58-59(10ms)StudentsreadthepassageonPage58-59,thenfinishthefollowingchart:,Formedicalcloning,cureseriousillnesses,whohave,diseases,graduallylosetheirabilitytomoveeasilyortothink,Againstmedicalcloning,willcureanillness,theefficiencyofthesystem,killanotherhumanbeing,Reading-IVFeedingback(5ms)1.Studentsasksomequestionsaboutthetwopassageslearntinthisclass.2.Askotherstudentstoanswerthequestionsfirst,thentheteachermakesaconclusion.,Assignment,1.Finishtheexercisesonworkbook.2.Prepareforthenextclass.,Takeabreak!,Period5ListeningandSpeaking,Unit2Cloning,ListeningI(5ms)Ex.1onPage17.,1.Listentothepassageforthefirsttime,thentickthosethatyouhear.,Keys:134,ListeningII(10ms)Ex.2onPage17.,Listentothetapeforthesecondtimeandfinishthefollowingchart:,cruel,unnaturalthings,“deadend”,aageof“mother”,weakens,wonderful,extinct,itisanewscience,encouragement,providemedicine,Speaking(10ms)havingadiscussion:,1.Withyourpartners,prepareadiscussionaccordingtotheinformationinEx.3onPage17-18(everymembershouldtakenoteswhentheyarepreparing).2.Havetheclassdiscussion.,ListeningIII(15ms)ListeningtaskonPage57.,1.ListentothetapeforthefirsttimeandfinishEx.1onPage57.,Keys:1F2O3F4F5F6F7F8O9O10F,ListeningIII(15ms)ListeningtaskonPage57.,1.ListentothetapeforthesecondtimeandfinishEx.2onPage57.,Keys:1.HewantstomakehismotherhappybykeepingherpetdogaliveforeverandhealsowantstotakethechancetoAmericaforholidaywhenthedogisbeingthere.2.Frankdoesntagreewithcloningbecausehethinkscloningisveryexpensiveandithasmanymoralproblems.,3.Billysmotherisinfavourofcloning.SheissavingmoneytogotoAmericatohaveherpetdogcloningjustbeforeitdies.4.Variousanswersarepossible.,1.Itismoraltomakemymotherhappy.2.Itcanprovideanexcuseforaholidayabroad.3.MymotherwillneedherpetwhenIamaway.,3.Listentothetapeagain,thenfinishthefollowingchart:,1.Itisveryexpensivetocloneapet.2.Itisselfishbecauseitisanexcuseforaholiday.3.Itisselfishbecauseitmeansthestudentcanstudyabroadwithouthismothercomplaining.,Assignment,1.FinishthelisteningtaskonEnglishWeekly.2.Makeaconclusionofthelisteningandspeakingskillslearnedinthisclass.,Takeabreak!,Period6Writing,Unit2Cloning,Period6:幻灯片72-79页,Makingclearthewritingtask(3ms),写作任务：Giveyouropiniononcloning写作要求：注意记叙文的表达方式要写明白自己的观点，层次要分明。写作建议：本单元主要讲述了“cloning”存在的问题以及人们的态度，文中可适当就此进行发挥。,WritingIDiscussion(5ms),Discussingroupsandwritedowntheinformationyouget.,Afterthediscussion,thestudentswriteapassageaccordingtothewritingtask.(Thereareatleast100words.),WritingII(20ms),WritingIII(12ms)Checkingthearticles.,1.Askthestudentstocheckthearticlesfortheirpartners.2.Showsomearticlesonthescreen,otherstudentsshouldgivesomeadvice.,Onepossibleversion:Togetherwiththemodernestadvancesinscienceandtechnology,thenewsthatDollyhadbeenbornwasannouncedin1997.However,Dollysdeathraisedmanyopinionsaboutcloning.Personally,Iwouldliketoagreethatcloningmaydonogoodtoourhumanbeings.,Firstly,seeingDolly,wemaythinkthatcloninganimalscaneasilydevelopadisease.Theycantlivelong.Secondly,wecantcloneanimalsthathavebeenextinctlongerthan10000years,eveniftheDNAofdinosaurscouldsurvivethislong.Thirdly,basedonwhatweknownow,humancloningisjustamatteroftimebuttheassumptionthathumancloneshavealreadybeenbornhasntbeenprovedyet.Inoneword,personally,thechancesofcloninganimalsandcloninghumanbeingslivingontheearthnaturallyaremerelyadream.,Assignment,Trytocorrectthecomposition.Finishtheexercisesofunit2onEnglishWeekly.,Takeabreak!,LanguagepointsforReadingIVideodata,LanguageDataBank,幻灯片80-94页,1.Thishappensinplantswhengardenerstakecuttingsfromgrowingplantstomakenewones,happenvi.occurbychance;takeplace(偶然地）发生；出现happentodohappentosb.Ithappenedthathappeningn.事件；偶然发生的事（常用复数）,当园艺工人割草而使之长出新的植物时，就会发生这种情况，、,LanguagepointsforReadingI,碰巧,（某人）发生什么事了,碰巧,辨析：happen,occur,takeplace与comeabout四词都有“发生”之意，但有区别。happen是一般用语，词义较广，强调事情发生的偶然性;occur用法较正式，既可以指自然发生，也可以指有意安排。takeplace一般指有计划，按事先安排的进行的含义。comeabout往往注重事情发生的原因，常与how连用。注：以上四组词均为不及物动词，无被动语态。,Usetheabovewordstofillthefollowingblanks:1)Whendidtheexplosion_?2)Importantelections_thisfall?3)Theconcertwill_nextSunday.4)Howdidthequarrel_?,occur,takeplace,comeabout,happen,2.Thenucleusofthiscellcontainsallthegenesneededtoproduceanewsheep.,这个细胞得细胞核含有生产一只新的绵羊的必需的基因。,neededtoproduceanewsheep为过去分词短语作后置定语，修饰其前面的名词genes,构成动宾搭配关系。,containv.haveorholdwithinitself饱含，里面有,辨析：contain与includecontain“包含，含有”，侧重于包含的内容或成分，“里面装有”；include“包括”，侧重范围或整体。Eg:1)Whisky_alargepercentageofalcohol.2)Thebook_fortymaps,_threeofGreatBritain.,contains,contains,including,3.ThenucleusfromsheepBandtheeggcellfromsheepAarejoinedusingelectricity.,Usingelectricity为现在分词短语作方式状语。联手，携手参加活动和某人一起做事参军，连起来,从绵羊B中取出得细胞核与从绵羊A中取出得卵细胞用电流使之结合。,Joinhands,joininsth./doingsth,joinsb.insth.,joinup,辨析：takepartin,join,joinin与attendtakepartin指参加某项活动，并以积极的态度在所参加的活动中起作用；join“加入”团体或组织；joinin指参加活动和游戏；joinsb.Insth.和某人一起做某事；attend参加会议(听演讲、听音乐、参加婚礼）,4.castdown使沮丧发现突破性克隆动物的命运使他沮丧。Hefeltcastdownwhenhediscoveredthefateofthebreakthroughclone.不要这么沮丧，