人教版选修八课件Unit 2 Cloning

EnglishSongEnglishClassLanguageDataBank 课时分配课时板块结合范例Period1&2WarmingupandReadingIPeriod3LearningaboutlanguagePeriod4ReadingIIPeriod5ListeningandSpeakingPeriod6Writing Period1&2WarmingupandReadingIUnit2CloningPeriod1&2:幻灯片9-26页 Lookatthefollowingpicturesandanswerthequestions:1.It’sthemostfamoussheepintheworld.DoyouknowhowDollyisdifferentfromothersheep?Warmingup(5ms)Shewasclonedwhiletheotherswerebornnaturally.Itisthecopyofanothersheep. 2.Whatiscloning?Cloningisawayofmakinganexactcopyofanotheranimalorplant.3.Arethefollowingclonesthesame?Ifnot,whatisthedifference?NO.Thefirstfourareman-madeclones,theresttwoarenaturalclones. Inthisclasswe’lllearnapassageaboutcloning,butbeforewecometothetext,canyouguesshowacloneisproduced?Pre-reading(3ms)Thecloningofplantsissimpleandrelativelyeasy.Itcanbedonebytakingcuttings(man-madecloning)orlettingtheplantproduceitsownrunners(naturalcloning).Thecloningofanimalsismorecomplicated.Itwasnotachieveduntil1996andisfullyexplainedinthepassagewe’lllearntoday. Reading–IScanning(5ms)Writetheletter“T”ifthestatementistrue.Write“F”ifitisfalse.1.Cloningmeansmakingacopyofananimaloraplant.2.Gardenerscanmakealotofmoneybycloningplants.3.Cloninganimalsisascomplicatedascloningplants.FFT 4.Dollythesheepwasthefirstsuccessfulcloneofamammal5.Naturalcloneshappeninanimalsaswillasinplants.TT 1.Dollythesheep_____.A.lookedexactlylikethesheepthatprovidestheegg.B.wastheexactcopyofthesheepthatprovidesthenucleus.C.lookedlikethesheepthatgavebirthtoit.D.hadthecharacteristicsofallthreesheep.＊Reading–IISkimming(5ms)Choosetherightansweraccordingtothetext. 2.Itcanbeinferredfromthepassagethataclonedanimal_____.A.usuallylivesaslongastheoriginaloneB.usuallyliveslongerthantheoriginaloneC.usuallyliveslongerthantheoriginaloneD.isusuallyashealthyastheoriginalone＊ 3.Whichofthefollowingisnotanadvantageofcloning?Cloningcanbeusedformedicalpurposes.Largequantitiesoffoodcanbeproducedbycloning.Cloningcanhelpkeepanimalsfrombecomingextinct.Famouspersonswhohavepassedawaycanbecloned.＊ 4.Whatispeople’sfearabouthumancloning?Whichofthefollowingiswrong?ClonedHitlerswoulddoharmtotheworld.Clonedpeoplemaybekilledatwillformedicalaid.Awomanwouldhavedifficultyrecognizingherrealhusband.Menwilldieoutbecauseawomancangivebirthtoababywithoutahusband.＊ Reading–IIIDetailreading(8ms)Fillinthechartusingtheinformationfromthetext.ProblemsordangersofcloningAdvantagesofcloningAnimalsmay____________________ofolderanimals.Medicalcloningcould_____________forseriousdegenerative(变质的）________inhumans.developtheillnessesproducecuresillnesses Animalclonesmay_______________thanthedonoranimalsCloningplantscan_______________ofsimilar_____________________.________________maywanttoclonethemselves.Cloningplantscanbe_______forresearchon_____________________.Thereare__________________tocloninghumanbeings.Cloningcanhelpsave____________________.dieyoungerproduceplantsqualityforsaleleaderusefulEvilplantspeciesmoralobjectionsendangeredanimalsnew Reading–IVIntensivereading(7ms)Readtheletteragain,thentrytofindthemainideaofeachparagraph.1.Cloningis______________________________2.Cloninghas____________uses.3.The_________ofDolly.4.The________ofDolly.5.Itis__________toclonehumanbeings.awayofmakinganexactcopyofanotheranimalandplant.problemstwomajoreffectforbidden Practice–discussion(8ms)Chooseoneofthefollowingquestionstodiscussingroups.Theleaderofeachgroupshouldwritedowneverymember’sopinion,thenthevolunteerswillshowyourgroupworktothewholeclass: Questions:Doyousupporttheideaofproducinghumanembryos(胚胎)formedicalpurposes?Why?Doyouthinkitagoodideatouseclonedhumansfororgan(器官)transplants?Why?Doyouthinkaclonedhumanshouldhavehumanrights?Why?Doyouthinkclonedhumanswillhavethesametalentsastheoriginalones?Why? AssignmentSurftheInternettofindmoreinformationaboutcloningandyouareexpectedtopresentittoyourclassmatesinthenextclass. LanguagepointsforreadingI Takeabreak! Period3LearningaboutlanguageUnit2CloningPeriod3:幻灯片27-48页 Checkinganswer–I(2ms)AnswerkeysforEx.1onPage13:differcastdownaccumulatedundertakeexactaltogether Checkinganswer–II(2ms)AnswerkeysforEx.2onPage13:straightforward2.arbitrary3.commercial4.Areyouinfavourof5.procedure6.Iobject7.willforbid Checkinganswer–III(3ms)AnswerkeysforEx.3onPage13:undertake2.controversial3.satisfaction4.Castdown5.breakthrough6.accumulate Checkinganswer–IV(2ms)AnswerkeysforEx.4onPage14:CFDEBA Checkinganswer–V(10ms)AnswerkeysforEx.2(Translation)onPage56(Workbook):Myrabbitgavebirthtofourexactlyidenticalbabiesseveraldaysago.Fromtimetotimewethinkthathumanscanusecloningtobringextinctanimalsbacktolife.Theplantodevelophumanclonesisboundtoraisecontroversialquestions.Shortlyafterheretired,theoldmanwroteanovelabouthischildhood. 5.Sheisunabletospeakaloudbecauseshehasjusthadanoperationonherthroat.6.Edwardwasmuchcastdownbythenewsthathecouldn’tobtainthegraduationcertificate.7.Hiseffortspaidoffwhenthedoctorsawthepatientopenedhiseyes.8.Thescientistmadetheassumptionthatthereisnoanimallifeonotherplants.Checkinganswer–V(10ms)AnswerkeysforEx.2(Translation)onPage56(Workbook): Usefulstructure(20ms)theAppositive(words,phrasesandclauses) 同位语从句与that引导的定语从句的区别：1、同位语从句与名词之间在逻辑上是“主语+be+表语”的关系。该名词是需要做特殊说明的抽象名词。例如：a)听说他们的队赢了，他们很高兴。______________________________________________________.b)消息就是他们队赢了。_______________________________________.TheyweredelightedatthenewsthattheirteamhadwonThenewswasthattheirteamhadwon 2、从引导词来看：引导词that在同位语从句中是连词，只起连接作用，无具体词义，that不可省略；that在定语从句中是关系代词，它在从句中充当一定成分——主语或宾语，有具体词义，作宾语时还可以省略。例如：a)Thefactory________wevisitedyesterdayisachemicalone.b)Thenews________hewillleaveforShanghaiistrue.(that)that定语从句同位语从句 3、同位语从句的简易判断方法：同位语与其先行词之间在逻辑上是“主语+be+表语”的同位语关系。所以，可以在名词从句之间加系动词be，使之构成一个新句子，如果合乎逻辑，句子通顺，则原句为同位语从句；定语从句是不能够有系表结构把先行词与从句连接起来的。例如：Thebeliefthattheearthisflatisstillheldinsomecountries.→_______________________________.Thebeliefisthattheearthisflat 另外，能用于名词性从句的名词有：ability,patience,anxiety,answer,order,report,wish,decision,suggestion,belief,doubt,fact,hope,message,news,promise,question,reply等等。 1.Alongwiththeletterwashispromise____hewouldvisitmethiscomingChristmas.(2004春季上海)A.whichB.thatC.whatD.whether答案B。这是一个同位语从句，解释promise的具体内容，要用that引导。高考链接 2.Thereisanewprobleminvolvedinthepopularityofprivatecars____roadconditionneed____.(2003年上海)A.that;tobeimprovedB.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.There’safeelinginme___we’llneverknowwhataUFOis–notever.(2002年上海)A.thatB.whichC.ofwhichD.what解析：答案A。同位语从句thatwe‘llneverknowwhataUFOis–notever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.what’s＊＊ 3.Weshouldstickto___istrue.A.whichB.thatC.anythingwhichD.whatever4.Youwillfindnomistake____I’vewritten.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.Hedidn’tknowwhichroom_____.A.theylivedB.theylivedinC.didtheyliveD.didtheylivein＊＊ Assignment1.SummarizetherulesofthePassiveVoice.2.Finishtheexercisesof“Discoveringusefulstructures”onPage22andPage64-65. Takeabreak! Period4ReadingIIUnit2CloningPeriod4:幻灯片49-61页 Warmingup(4ms)Answerthefollowingquestions:1.Doyoulikedinosaurs?Wherehaveyouseenthem?Canyouseetheminourreallife?Why?2.Doyouthinkitispossibletoclonedinosaurs?Ifyes,doyouthinkthat’sgoodforhumanbeings?Why?(Studentsgivetheirownanswers.) Reading--Iscanning(5ms)Readthetext,thentellthefollowingsentencesaretrueorfalse.(Studentscandiscussinpairs.)Scientistsarestillexperimentingwithcloningmammalsbecausetheythinkitcanmakemoney.Theanimalsthathavedisappearedfromtheearth,likedinosaurs,canbebroughtbacktolifethroughcloning.Ifwecancloneanyextinctanimals,weshouldletthemliveinazoo.FFF Reading--IIDetailreading(6ms)Readthetext,thenanswerthefollowingquestions.(Studentscandiscussinpairs.)Whyshould’tyoucloneanextinctanimalunlessthereisenoughdiversityinthegroup?Whyisitwrongtocloneanextinctanimalifitwouldhavetoliveinazoo?Whycan’tyouclonetheDNAofanimalsthathavebeenextinctlongerthan10,000years? Whyshould’tyoucloneanextinctanimalunlessthereisenoughdiversityinthegroup?Therewillnotbeenoughgeneticvariationinthegrouptobeabletoresistnewillnesses. 2.Whyisitwrongtocloneanextinctanimalifitwouldhavetoliveinazoo?Itisnotagoodideatocloneananimalthatwouldhavetoliveinazoobecauseitisnotasuitablehabitattodevelopandincreaseitsnumbers.Thezooisnotanaturalenvironmentforawildanimal. 3.Whycan’tyouclonetheDNAofanimalsthathavebeenextinctlongerthan10,000years?TheDNAofanimalsmorethan10,000yearsoldisnotsuitableforcloning,foritcan’tsurvivesolong. Reading--IIIArgument(10ms)1.ReadthepassageagainandhaveaargumentaccordingtotherequirementofEx.2onPage16.2.Studentsworkingroups,whendiscussing,theheadofeachgroupshouldwritedowntheopinionsofallthemembers.3.Asksomevolunteerstoshowtheiropinions. Reading--IVReadingonPage58-59(10ms)StudentsreadthepassageonPage58-59,thenfinishthefollowingchart:TeamWhat’stheirargument?Tworeasonsfor/againstmedicalcloningDoyouagreewiththem?why?A1.to________________thathavenocureatthemomentVariousanswersandreasonsarepossible2.Tohelppeople______________whichmakethem______________________Formedicalcloningcureseriousillnesseswhohavediseasesgraduallylosetheirabilitytomoveeasilyortothink TeamWhat’stheirargument?Tworeasonsfor/againstmedicalcloningDoyouagreewiththem?why?B1.tomakethestemcellsthat__________________ofoneperson,youhaveto______________________Variousanswersandreasonsarepossible2.Scientistsareworriedabout_________________Againstmedicalcloningwillcureanillnesstheefficiencyofthesystemkillanotherhumanbeing Reading--IVFeedingback(5ms)1.Studentsasksomequestionsaboutthetwopassageslearntinthisclass.2.Askotherstudentstoanswerthequestionsfirst,thentheteachermakesaconclusion. Assignment1.Finishtheexercisesonworkbook.2.Prepareforthenextclass. Takeabreak! Period5ListeningandSpeakingUnit2Cloning Listening–I(5ms)Ex.1onPage17.1.Listentothepassageforthefirsttime,thentickthosethatyouhear.Keys:134 Listening–II(10ms)Ex.2onPage17.Listentothetapeforthesecondtimeandfinishthefollowingchart:cruelMary’sideasaboutcloningXiaoQing’sideasaboutcloing________toanimalsscientistsaredoinga___________jobmakesthemdo_________Maybringback_____animalsitisa___________problemsbecause__________cloneborn_____________scientistneed_____________________thespeciesitmay___________forillnessunnaturalthings“deadend”aageof“mother”weakenswonderfulextinctitisanewscienceencouragementprovidemedicine Speaking(10ms)havingadiscussion:1.Withyourpartners,prepareadiscussionaccordingtotheinformationinEx.3onPage17-18(everymembershouldtakenoteswhentheyarepreparing).2.Havetheclassdiscussion. Listening–III(15ms)ListeningtaskonPage57.1.ListentothetapeforthefirsttimeandfinishEx.1onPage57.Keys:1F2O3F4F5F6F7F8O9O10F Listening–III(15ms)ListeningtaskonPage57.1.ListentothetapeforthesecondtimeandfinishEx.2onPage57.Keys:1.HewantstomakehismotherhappybykeepingherpetdogaliveforeverandhealsowantstotakethechancetoAmericaforholidaywhenthedogisbeingthere.2.Frankdoesn’tagreewithcloningbecausehethinkscloningisveryexpensiveandithasmanymoralproblems. 3.Billy’smotherisinfavourofcloning.SheissavingmoneytogotoAmericatohaveherpetdogcloningjustbeforeitdies.4.Variousanswersarepossible. 1.Itismoraltomakemymotherhappy.2.Itcanprovideanexcuseforaholidayabroad.3.MymotherwillneedherpetwhenIamaway.3.Listentothetapeagain,thenfinishthefollowingchart:ArgumentsforcloningpetsArgumentsagainstcloningpets1.Itisveryexpensivetocloneapet.2.Itisselfishbecauseitisanexcuseforaholiday.3.Itisselfishbecauseitmeansthestudentcanstudyabroadwithouthismothercomplaining. Assignment1.FinishthelisteningtaskonEnglishWeekly.2.Makeaconclusionofthelisteningandspeakingskillslearnedinthisclass. Takeabreak! Period6WritingUnit2CloningPeriod6: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。 Writing–IDiscussion(5ms)Discussingroupsandwritedowntheinformationyouget.Afterthediscussion,thestudentswriteapassageaccordingtothewritingtask.(Thereareatleast100words.)Writing–II(20ms) Writing–III(12ms)Checkingthearticles.1.Askthestudentstocheckthearticlesfortheirpartners.2.Showsomearticlesonthescreen,otherstudentsshouldgivesomeadvice. Onepossibleversion:Togetherwiththemodernestadvancesinscienceandtechnology,thenewsthatDollyhadbeenbornwasannouncedin1997.However,Dolly’sdeathraisedmanyopinionsaboutcloning.Personally,Iwouldliketoagreethatcloningmaydonogoodtoourhumanbeings. Firstly,seeingDolly,wemaythinkthatcloninganimalscaneasilydevelopadisease.Theycan’tlivelong.Secondly,wecan’tcloneanimalsthathavebeenextinctlongerthan10000years,eveniftheDNAofdinosaurscouldsurvivethislong.Thirdly,basedonwhatweknownow,humancloningisjustamatteroftimebuttheassumptionthathumancloneshavealreadybeenbornhasn’tbeenprovedyet.Inoneword,personally,thechancesofcloninganimalsandcloninghumanbeingslivingontheearthnaturallyaremerelyadream. AssignmentTrytocorrectthecomposition.Finishtheexercisesofunit2onEnglishWeekly. Takeabreak! LanguagepointsforReadingIVideodataLanguageDataBank幻灯片80-94页 1.Thishappensinplantswhengardenerstakecuttingsfromgrowingplantstomakenewones,…happenvi.occurbychance;takeplace(偶然地）发生；出现happentodo…happentosb.Ithappenedthat…happeningn.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___________?occurtakeplacecomeabouthappen 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.containscontainsincluding 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。Joinhandsjoininsth./doingsthjoinsb.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，打起精神来！Don’tbesocastdown.Justkeepupyourspirits.※castdown有两个义项：毁掉；使沮丧，另外，castaway丢弃，castoff放弃；丢弃，castout赶走 5.infavorof赞成；有利于比分是80比78，客队获胜。Thescorewas80to78infavouroftheguestteam.今天的兑换率对我们有利。Theexchangerateisinourfavourtoday.infavourof赞成，支持，与against相对。 6.beboundto注定；有义务做明天天气一定会变好。Theweatherisboundtogetbettertomorrow.发现突破性克隆动物的命运使他沮丧。我觉得有必要对你说，你酒喝得太多了。Ifeelboundtotellyouthatyouaredrinkingtoomuch.beboundtodosth.有两个义项：注定，一定会法律责任或义务做某事。 7.payoff（事业、计划）成功他付清全体船员的工资并将他们解雇。Hepaidoffthecrewoftheship.最终他还清了所有的债务。Intheendhepaidoffallhisdebts.payoff有三义项：成功；付清薪水并解雇；偿还（债务等）。 Usetheproperformsofthefollowingphrasestofillintheblanks:castdownpayoffinfavouroffromtimetotimebeboundtoFinishthefollowingexercises:Shewas___________byherhusband’sdeath.Myunclecomestohavedinnerwithus________________.castdownfromtimetotime 3.Hehasbeenworkingsohardathislessons,sohe____________passtheexamthistime.4.Finallyhisefforts__________.5.Allofthemwerestrongly_______________theproject.isboundofpaidoffinfovourof