高中英语选修八课件21《Unit-2-Cloning》

新课标人教版课件系列《高中英语》选修(模块）8-2.1新课标人教版课件系列《高中英语》1EnglishSongEnglishClassLanguageDataBankEnglishSong2课时分配课时板块结合范例Period1&2WarmingupandReadingIPeriod3LearningaboutlanguagePeriod4ReadingIIPeriod5ListeningandSpeakingPeriod6Writing课时分配课时板块结合范例Period1&2Warming3Period1&2WarmingupandReadingIUnit2Cloning

Period1&2:幻灯片9-26页Period1&2WarmingUnit2Cl4Lookatthefollowingpicturesandanswerthequestions:1.It’sthemostfamoussheepintheworld.DoyouknowhowDollyisdifferentfromothersheep?Warmingup(5ms)Shewasclonedwhiletheotherswerebornnaturally.Itisthecopyofanothersheep.

Lookatthefollowingpictures52.Whatiscloning?Cloningisawayofmakinganexactcopyofanotheranimalorplant.3.Arethefollowingclonesthesame?Ifnot,whatisthedifference?NO.Thefirstfourareman-madeclones,theresttwoarenaturalclones.2.Whatiscloning?6Inthisclasswe’lllearnapassageaboutcloning,butbeforewecometothetext,canyouguesshowacloneisproduced?Pre-reading(3ms)Thecloningofplantsissimpleandrelativelyeasy.Itcanbedonebytakingcuttings(man-madecloning)orlettingtheplantproduceitsownrunners(naturalcloning).Thecloningofanimalsismorecomplicated.Itwasnotachieveduntil1996andisfullyexplainedinthepassagewe’lllearntoday.Inthisclasswe’lllearnapa7Reading–IScanning(5ms)Writetheletter“T”ifthestatementistrue.Write“F”ifitisfalse.1.Cloningmeansmakingacopyofananimaloraplant.2.Gardenerscanmakealotofmoneybycloningplants.3.Cloninganimalsisascomplicatedascloningplants.FFTReading–IScanning(5ms)W84.Dollythesheepwasthefirstsuccessfulcloneofamammal5.Naturalcloneshappeninanimalsaswillasinplants.TT4.Dollythesheepwasthefir91.Dollythesheep_____.A.lookedexactlylikethesheepthatprovidestheegg.B.wastheexactcopyofthesheepthatprovidesthenucleus.C.lookedlikethesheepthatgavebirthtoit.D.hadthecharacteristicsofallthreesheep.

＊Reading–IISkimming(5ms)Choosetherightansweraccordingtothetext.1.Dollythesheep_____.＊Readin102.Itcanbeinferredfromthepassagethataclonedanimal_____.

A.usuallylivesaslongastheoriginalone

B.usuallyliveslongerthantheoriginalone

C.usuallyliveslongerthantheoriginalone

D.isusuallyashealthyastheoriginalone＊2.Itcanbeinferredfromthe113.Whichofthefollowingisnotanadvantageofcloning?Cloningcanbeusedformedicalpurposes.Largequantitiesoffoodcanbeproducedbycloning.Cloningcanhelpkeepanimalsfrombecomingextinct.Famouspersonswhohavepassedawaycanbecloned.＊3.Whichofthefollowingisn124.Whatispeople’sfearabouthumancloning?Whichofthefollowingiswrong?ClonedHitlerswoulddoharmtotheworld.Clonedpeoplemaybekilledatwillformedicalaid.Awomanwouldhavedifficultyrecognizingherrealhusband.Menwilldieoutbecauseawomancangivebirthtoababywithoutahusband.＊4.Whatispeople’sfearabout13Reading–IIIDetailreading(8ms)

Fillinthechartusingtheinformationfromthetext.

ProblemsordangersofcloningAdvantagesofcloningAnimalsmay____________________ofolderanimals.Medicalcloningcould_____________forseriousdegenerative(变质的）________inhumans.developtheillnessesproducecuresillnessesReading–IIIDetailreading14Animalclonesmay_______________thanthedonoranimalsCloningplantscan_______________ofsimilar_____________________.________________maywanttoclonethemselves.Cloningplantscanbe_______forresearchon_____________________.Thereare__________________tocloninghumanbeings.Cloningcanhelpsave____________________.dieyoungerproduceplantsqualityforsaleleaderusefulEvilplantspeciesmoralobjectionsendangeredanimalsnewAnimalclonesmay______Cloni15Reading–IVIntensivereading(7ms)Readtheletteragain,thentrytofindthemainideaofeachparagraph.1.Cloningis______________________________2.Cloninghas____________uses.3.The_________ofDolly.4.The________ofDolly.5.Itis__________toclonehumanbeings.awayofmakinganexactcopyofanotheranimalandplant.problemstwomajoreffectforbiddenReading–IVIntensivereadin16Practice–discussion(8ms)

Chooseoneofthefollowingquestionstodiscussingroups.Theleaderofeachgroupshouldwritedowneverymember’sopinion,thenthevolunteerswillshowyourgroupworktothewholeclass:Practice–discussion(8ms)17Questions:Doyousupporttheideaofproducinghumanembryos(胚胎)formedicalpurposes?Why?Doyouthinkitagoodideatouseclonedhumansfororgan(器官)transplants?Why?Doyouthinkaclonedhumanshouldhavehumanrights?Why?Doyouthinkclonedhumanswillhavethesametalentsastheoriginalones?Why?Questions:18Assignment

SurftheInternettofindmoreinformationaboutcloningandyouareexpectedtopresentittoyourclassmatesinthenextclass.AssignmentSurftheInterne19LanguagepointsforreadingILanguagepointsforreadingI20Takeabreak!Takeabreak!21Period3LearningaboutlanguageUnit2Cloning

Period3:幻灯片27-48页Period3Learningaboutlangua22Checkinganswer–I(2ms)

AnswerkeysforEx.1onPage13:differcastdownaccumulatedundertakeexactaltogetherCheckinganswer–I(2ms)

Answ23Checkinganswer–II(2ms)

AnswerkeysforEx.2onPage13:straightforward2.arbitrary3.commercial4.Areyouinfavourof5.procedure6.Iobject7.willforbidCheckinganswer–II(2ms)

Ans24Checkinganswer–III(3ms)

AnswerkeysforEx.3onPage13:undertake2.controversial3.satisfaction4.Castdown5.breakthrough6.accumulateCheckinganswer–III(3ms)

25Checkinganswer–IV(2ms)

AnswerkeysforEx.4onPage14:CFDEBACheckinganswer–IV(2ms)

Ans26Checkinganswer–V(10ms)

AnswerkeysforEx.2(Translation)onPage56(Workbook):Myrabbitgavebirthtofourexactlyidenticalbabiesseveraldaysago.Fromtimetotimewethinkthathumanscanusecloningtobringextinctanimalsbacktolife.Theplantodevelophumanclonesisboundtoraisecontroversialquestions.Shortlyafterheretired,theoldmanwroteanovelabouthischildhood.Checkinganswer–V(10ms)

Ans275.Sheisunabletospeakaloudbecauseshehasjusthadanoperationonherthroat.6.Edwardwasmuchcastdownbythenewsthathecouldn’tobtainthegraduationcertificate.7.Hiseffortspaidoffwhenthedoctorsawthepatientopenedhiseyes.8.Thescientistmadetheassumptionthatthereisnoanimallifeonotherplants.Checkinganswer–V(10ms)

AnswerkeysforEx.2(Translation)onPage56(Workbook):5.Sheisunabletospeakalou28Usefulstructure(20ms)theAppositive(words,phrasesandclauses)Usefulstructure(20ms)the29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302、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2、从引导词来看：引导词that在同位语从句中是连词，只起连313、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.→_______________________________.Thebeliefisthattheearthisflat3、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32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。另外，能用于名词性从句的名词有：331.Alongwiththeletterwashispromise____hewouldvisitmethiscomingChristmas.(2004春季上海)

A.whichB.that

C.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1.Alongwiththeletterwash342.Thereisanewprobleminvolvedinthepopularityofprivatecars____roadconditionneed____.(2003年上海)

A.that;tobeimprovedB.which;tobeimproved

C.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。2.Thereisanewprobleminvo353.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。3.There’safeelinginme___364.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。4.Informationhasbeenputfo375.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。5.Thesewildflowersaresos38Finishthefollowingexercises:1.Hiscentralideais____thelosersdonotwritehistory.A.XB.becauseC.thatD.whether2.Ithink___certainthatshewilldowellinherexam.A.thatB.thisisC.itD.what’s＊＊Finishthefollowingexercises39

3.Weshouldstickto___istrue.A.whichB.thatC.anythingwhichD.whatever

4.Youwillfindnomistake____I’vewritten.A.whatB.inwhatC.withwhatD.that

＊＊3.Weshouldstickto___i40新课标人教版课件系列《高中英语》选修(模块）8新课标人教版课件系列《高中英语》41

5.Thereisaruleinourschool____nooneispermittedtosmoke.A.whereB.whichC.thatD.what6.Hedidn’tknowwhichroom_____.A.theylivedB.theylivedinC.didtheyliveD.didtheylivein＊＊5.Thereisaruleinoursch42Assignment1.SummarizetherulesofthePassiveVoice.2.Finishtheexercisesof“Discoveringusefulstructures”onPage22and65.Assignment1.Summarizetheru43Takeabreak!Takeabreak!44Period4ReadingIIUnit2Cloning

Period4:幻灯片49-61页Period4ReadingIIUnit245Warmingup(4ms)Answerthefollowingquestions:1.Doyoulikedinosaurs?Wherehaveyouseenthem?Canyouseetheminourreallife?Why?2.Doyouthinkitispossibletoclonedinosaurs?Ifyes,doyouthinkthat’sgoodforhumanbeings?Why?(Studentsgivetheirownanswers.)Warmingup(4ms)Answerthe46Reading--Iscanning(5ms)Readthetext,thentellthefollowingsentencesaretrueorfalse.(Studentscandiscussinpairs.)Scientistsarestillexperimentingwithcloningmammalsbecausetheythinkitcanmakemoney.Theanimalsthathavedisappearedfromtheearth,likedinosaurs,canbebroughtbacktolifethroughcloning.Ifwecancloneanyextinctanimals,weshouldletthemliveinazoo.FFFReading--Iscanning(5ms)47Reading--IIDetailreading(6ms)Readthetext,thenanswerthefollowingquestions.(Studentscandiscussinpairs.)Whyshould’tyoucloneanextinctanimalunlessthereisenoughdiversityinthegroup?Whyisitwrongtocloneanextinctanimalifitwouldhavetoliveinazoo?Whycan’tyouclonetheDNAofanimalsthathavebeenextinctlongerthan10,000years?Reading--IIDetailreading48Whyshould’tyoucloneanextinctanimalunlessthereisenoughdiversityinthegroup?Therewillnotbeenoughgeneticvariationinthegrouptobeabletoresistnewillnesses.Whyshould’tyoucloneanexti492.Whyisitwrongtocloneanextinctanimalifitwouldhavetoliveinazoo?

Itisnotagoodideatocloneananimalthatwouldhavetoliveinazoobecauseitisnotasuitablehabitattodevelopandincreaseitsnumbers.Thezooisnotanaturalenvironmentforawildanimal.2.Whyisitwrongtoclonean503.Whycan’tyouclonetheDNAofanimalsthathavebeenextinctlongerthan10,000years?

TheDNAofanimalsmorethan10,000yearsoldisnotsuitableforcloning,foritcan’tsurvivesolong.3.Whycan’tyouclonetheDNA51Reading--IIIArgument(10ms)

1.ReadthepassageagainandhaveaargumentaccordingtotherequirementofEx.2onPage16.

2.Studentsworkingroups,whendiscussing,theheadofeachgroupshouldwritedowntheopinionsofallthemembers.

3.Asksomevolunteerstoshowtheiropinions.Reading--IIIArgument(152Reading--IVReadingon59(10ms)

Studentsreadthepassageon59,thenfinishthefollowingchart:TeamWhat’stheirargument?Tworeasonsfor/againstmedicalcloningDoyouagreewiththem?why?A1.to________________thathavenocureatthemomentVariousanswersandreasonsarepossible2.Tohelppeople______________whichmakethem______________________FormedicalcloningcureseriousillnesseswhohavediseasesgraduallylosetheirabilitytomoveeasilyortothinkReading--IVReadingonPag53TeamWhat’stheirargument?Tworeasonsfor/againstmedicalcloningDoyouagreewiththem?why?B1.tomakethestemcellsthat__________________ofoneperson,youhaveto______________________Variousanswersandreasonsarepossible2.Scientistsareworriedabout_________________AgainstmedicalcloningwillcureanillnesstheefficiencyofthesystemkillanotherhumanbeingTeamWhat’stheirargument?Two54Reading--IVFeedingback(5ms)

1.Studentsasksomequestionsaboutthetwopassageslearntinthisclass.

2.Askotherstudentstoanswerthequestionsfirst,thentheteachermakesaconclusion.

Reading--IVFeedingback55Assignment

1.Finishtheexercisesonworkbook.2.Prepareforthenextclass.Assignment1.Finishtheexe56Takeabreak!Takeabreak!57Period5ListeningandSpeakingUnit2Cloning

Period5ListeningandSpeakin58Listening–I(5ms)

Ex.1onPage17.

1.Listentothepassageforthefirsttime,thentickthosethatyouhear.Keys:134Listening–I(5ms)

Ex.1on59Listening–II(10ms)Ex.2onPage17.Listentothetapeforthesecondtimeandfinishthefollowingchart:cruelMary’sideasaboutcloningXiaoQing’sideasaboutcloing________toanimalsscientistsaredoinga___________jobmakesthemdo_________Maybringback_____animalsitisa___________problemsbecause__________cloneborn_____________scientistneed_____________________thespeciesitmay___________forillnessunnaturalthings“deadend”aageof“mother”weakenswonderfulextinctitisanewscienceencouragementprovidemedicineListening–II(10ms)Ex.260Speaking(10ms)

havingadiscussion:1.Withyourpartners,prepareadiscussionaccordingtotheinformationinEx.3on18(everymembershouldtakenoteswhentheyarepreparing).2.Havetheclassdiscussion.Speaking(10ms)

havingad61Listening–III(15ms)

ListeningtaskonPage57.1.ListentothetapeforthefirsttimeandfinishEx.1onPage57.Keys:1F2O3F4F5F6F7F8O9O10FListening–III(15ms)

List62Listening–III(15ms)

ListeningtaskonPage57.1.ListentothetapeforthesecondtimeandfinishEx.2onPage57.Keys:1.HewantstomakehismotherhappybykeepingherpetdogaliveforeverandhealsowantstotakethechancetoAmericaforholidaywhenthedogisbeingthere.2.Frankdoesn’tagreewithcloningbecausehethinkscloningisveryexpensiveandithasmanymoralproblems.Listening–III(15ms)

List633.Billy’smotherisinfavourofcloning.SheissavingmoneytogotoAmericatohaveherpetdogcloningjustbeforeitdies.4.Variousanswersarepossible.3.Billy’smotherisinfavour641.Itismoraltomakemymotherhappy.2.Itcanprovideanexcuseforaholidayabroad.3.MymotherwillneedherpetwhenIamaway.3.Listentothetapeagain,thenfinishthefollowingchart:ArgumentsforcloningpetsArgumentsagainstcloningpets1.Itisveryexpensivetocloneapet.2.Itisselfishbecauseitisanexcuseforaholiday.3.Itisselfishbecauseitmeansthestudentcanstudyabroadwithouthismothercomplaining.1.Itismoraltomakemymothe65Assignment1.FinishthelisteningtaskonEnglishWeekly.2.Makeaconclusionofthelisteningandspeakingskillslearnedinthisclass.Assignment1.Finishthelisten66Takeabreak!Takeabreak!67Period6WritingUnit2Cloning

Period6:幻灯片72-79页Period6WritingUnit2Clo68Makingclearthewritingtask(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。Makingclearthewritingtask69Writing–IDiscussion(5ms)Discussingroupsandwritedowntheinformationyouget.Afterthediscussion,thestudentswriteapassageaccordingtothewritingtask.(Thereareatleast100words.)Writing–II(20ms)Writing–IDiscussion(5ms70Writing–III(12ms)

Checkingthearticles.1.Askthestudentstocheckthearticlesfortheirpartners.2.Showsomearticlesonthescreen,otherstudentsshouldgivesomeadvice.Writing–III(12ms)

Checkin71Onepossibleversion:Togetherwiththemodernestadvancesinscienceandtechnology,thenewsthatDollyhadbeenbornwasannouncedin1997.However,Dolly’sdeathraisedmanyopinionsaboutcloning.Personally,Iwouldliketoagreethatcloningmaydonogoodtoourhumanbeings.Onepossibleversion:72

Firstly,seeingDolly,wemaythinkthatcloninganimalscaneasilydevelopadisease.Theycan’tlivelong.Secondly,wecan’tcloneanimalsthathavebeenextinctlongerthan10000years,eveniftheDNAofdinosaurscouldsurvivethislong.Thirdly,basedonwhatweknownow,humancloningisjustamatteroftimebuttheassumptionthathumancloneshavealreadybeenbornhasn’tbeenprovedyet.Inoneword,personally,thechancesofcloninganimalsandcloninghumanbeingslivingontheearthnaturallyaremerelyadream.Firstly,seeingDolly,we73AssignmentTrytocorrectthecomposition.Finishtheexercisesofunit2onEnglishWeekly.AssignmentTrytocorrectthec74Takeabreak!Takeabreak!75LanguagepointsforReadingIVideodataLanguageDataBank幻灯片80-94页LanguagepointsforReadingIL76

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1.Thishappensinplants77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。辨析：happen,occur,takeplace与c78Usetheabovewordstofillthefollowingblanks:1)Whendidtheexplosion_______?2)Importantelections_______thisfall?3)Theconcertwill___________nextSunday.4)Howdidthequarrel___________?occurtakeplacecomeabouthappenUsetheabovewordstofillth792.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2.Thenucleusofthis