选修二单元词汇教学案设计

教材分析课课题:wordsandexpressionsinunit2module8课型：newlesson课时:1选修八中在复习高中语法项目的同时，主要是训练学生的阅读技能并拓展学生的词汇量，抓双基学习。了解克隆过程及克隆的意义。学情分析学生已基本养成学习习惯，有一定的单词基础对构词法也已初步了解，可以利用构词法更快捷的记忆单词；在句子中猜测单词词义。设计理念基础单词读写自主学习；重难单词短语合作探究突破。135课堂模式，注重基础单词短语的掌握，知识拓展过程中基本技能的提高。教学目标掌握重点单词和短语的读写。总结理解重点单词的用法。提高学生的阅读技能----猜词，查读和推理能力。体会自主探究的乐趣，了解合作学习的优势。学习重点总结并合理运用重点单词和短语。学习难点总结并合理运用重点单词和短语。教学准备编写导学卡制作课件预测学生可能会遇到的问题主备人：审核人：授课时间：年月日教学过程设计三个阶段学习内容教师行为期望学生行为自主学习阶段1.Pleasetrytoguessthemeaningoftheunderlinedwords.(1)Cloningisawayofmakinganexactcopyofanotheranimalorplant.(准确的，精确地)(2)Cloningplantsisstraightforwardwhilecloninganimalsisverycomplicated(difficult/complex).（简单的）(3)CloningscientistswerecastdowntofindthatDolly’s(thesheep)illnessweremoreappropriatetoamucholderanimal.Sadlythesamearbitraryfateaffectedotherspecies,suchasclonedmice.（沮丧/失望;任意的/无法逆转的）(4)newspaperwroteofevilleadershopingtoclonethemselvestoattaintheirambitions.（达到，实现）2.Trytoreadthewordsindividuallyandtheingroupsdiscussthedifficultpronunciationanddealwithitontheirown.3.Listentothetapeandfollowthepronunciation.对于学生不能理解的句子，用简单的英文解释。播放单词录音。根据句义，猜测单词词义，初步了解克隆。根据音标自主拼读单词，听音跟读掌握单词标准发音。合作交流阶段Individualworktoreviewpartsofspeechorrelatedformsofthewordsinthisunit.Refertothedictionaryifnecessary.Discusstheanswersingroupsandthenpresenttheanswers.(1)differv.不同：相异—n.______----adj._____(2)exactadj.准确的，精确的：精密的-----adv.______(3)commercialadj.商业的：贸易的----n._______(4)carriern.携带者，搬运工，运输工具----v._______(5)correction.n.改正，修正----v._______(6)object.v.反对，不赞成------n.______(7)decoration.n.装饰-----v.________(8)accumulatevt.积累：聚积----n.______(9)assumptionn.假定：设想----v.__________.(10)resistvt.抵抗：对抗----n.____adj.______(11)reasonableadj.合情理的；公道的-----n.／v.----______(12)argumentn.论据：论点：争论----v._______(13)regulationn.规则；规章；法规----v._______管理，控制adj.有规律的，规则的_______(14)mediumn.媒介；手段；工具----(pl.)______(15)undertakevt.着手：从事：承担---pt._____----pp.______(16)forbidvt.禁止：不准---pt.______pp.________keys:(1)difference;different(2)exactly(3)commerce(4)carry(5)correct(6)objection(7)decorate(8)accumulation(9)assume(10)resistance;resistant(11)reason(12)argue(13)regulate;regular(14)media(15)undertook;undertaken(16)forbade/forbad–forbiddenDeductiveorinductivemethodtolearntheuseofthephrases.Cooperativeworktofinishexercisesconcerningthewordsandphrasesabove.Eachgrouppresenttheiranswers.1(sb.)____castdown____使沮丧Shewascastdownbyhisbehavior.他的行为使她感到沮丧。2objecttosth./sb.不赞成，反对

object______sth.反对某人干某事

havenoobjection____sb.doingsth.不反对某人干某事牛津P1372)Ireallyobjectto

________(charge)forparking.

我非常反对收停车费。Weallobjecttotheplan.__________________

3infavorof赞成，同意，支持，看中，选中

insb.'sfavor对某人有利的（地）

dosb.afavor帮某人忙e.g.(1)Isit____________cloningor____________it?

它是赞成克隆行为还是反对克隆行为？(2)Willyouplease________________?------certainly.你能帮我一个忙吗？-----当然可以。

4payoff（无被动）得到好结果，取得成功，奏效，偿清，付清(1)朗文P1503)Mr.Liwasdrivingataxiontheweekendsto_______allhisdebts.

李先生周末开出租车赚钱以还清他的所有债务。(2)Herdesignwonthefirstprizeinthecompetition.Yearsofpatienceandhardworkhadatlast_______.

她的设计在比赛中获得一等奖。多年的耐心和艰苦的工作终于得到了好的结果

5forbidsth./doingsth.禁止某事/干某事

forbidsb.todosth不准某人干某事.

forbidsb.fromdoingsth.禁止某人干某事(1)(牛津P794)Heforbadethem_________(mention)thesubjectagain.他不准他们再提这个问题。(2)He_____________duringofficehours.

他禁止在办公时间抽烟。(3)牛津P794)Youareallforbidden_________.

你们都不准离开。6owevt.欠(账、钱、人情等)；归功于(～…to/owetoitthat…/owingto介词短语：由于)……，应感谢(1)IfIhaveimprovedinanyway，I_____itall___myteacher.

如果说我有一些进步，这应该全部归功于我的老师。

(2)She________________________________________ratherthantoability.她把她的成功归功于幸运，而不是有能力。(3)(牛津P1427)Thanksforhelpingme—I____you_______.

谢谢你帮助我——我欠你一个人情。

7.bothersb._________sth.为某事打扰或烦扰某人(牛津P221)Idon’twanttobotherherwith/aboutmyproblemsatthemoment.

我此刻不想让她为我的事操心。(牛津P221)Sorrytobotheryou，butthereisacallforyou.

很抱歉打扰你一下，有你的电话。8differ______不同于，和……不同，和……意见不一致

differ_____在……方面不同

differwith与某人意见不同

bedifferentfrom与…….不同，有区别

________difference产生差别，起重要作用

makenodifference________________________betweenAandB分辨出A与B的不同，区分A与B9resistdoingsth.反对做某事resistthetemptation抵抗诱惑10(be)boundto(do)一定，注定（做）…Keys:1.be;by2.to;to;beingcharged;我们都反对这个计划。3.infavorof;against;domeafavor4.payoff;paidoff5.frommentioning/tomention;forbidssmoking;toleave.6.(1)owe;to(2)oweshersuccesstoluck(3)owe;afavor7.with/about8.from;in;makea;不起作用;tellthedifference指导学生小组合作，了解词汇构词法。运用演绎法及归纳法引导学生小组合作掌握重要词组的用法规则。根据构词法跟准确快速记忆单词。根据例句归纳总结词组用法；或者根据词组用法规则，正确完成句子最终掌握重点词语的使用。巩固达标阶段1.indivuallyfinishthewordandphraseexercises.2.discusstheanswersingroupsandthenpresentthem.一.WordExercises.1.Thechemicalsthatareharmfultotheenvironmentare____________(禁止)here.

2．Christmas____________(装饰品)nowhavestartedtosellwellinourshop.

3．Beforerulesand____________(规则)wereintroduced，thesportwasverydangerous.4．Iamsureshehastheabilityto____________(承担)allkindsofhousework.

5．Ithoughtthepriceofthecarwasquite____________(合理的)，soIdecidedtobuyit.6.Itisseveno’clocknow.tobe____(准确的)，it’sseventhree.

7．用object的适当形式填空

(1)Greydecidedtomovetothecountrysideandhiswifemadeno____________toit.

(2)Somemembersofthecommittee____________tomyproposal，whichmademedisappointed.

8用assume的适当形式填空

(1)Weareworkingonthe____________thattheconferencewilltakeplaceasplanned.

(2)____________thathisstoryistrue，whatshouldwedo?

1.forbidden2.decorations3.regulations4.undertake5.reasonable6.exact7.(1)objections(2)objected8.(1)assumption(2)Assuming

二。高频短语1．________________得到好结果；取得成功；偿清

2．________________

沮丧；不愉快

3．________________

反对

4．________________

赞成；支持

5．________________

把……归功于……6．________________

一定或注定(做)……7._________________不准某人干某事8.___________________为某事打扰或烦扰某人Keys:1.payoff2.castdown3.objectto4.infavorof5.owe…to…6.beboundto7.forbidesb.todosth.8.bothersb.with/aboutsth.三．Fillintheblankswiththephrasesabove.1.Hewill_________(bound)regretforwhathehasdoneifheknowsthetruth.2.Hefelt__________沮丧whenhefoundouttheresult

3.Theconductor______(forbid)us____tickourhandsoutofthewindowwhenthebuswasmoving.4.We________(object)treatedlikethis.5.She’snot__________(favour)carryingouttheplan.Keys:1.beboundto2.castdown3.forbade;to4.objecttobeing5.infavorofStep5.Extension.IndividuallyunderlinethesentencescontainingkeywordsandphrasesinReading.(differ;undertake;payoff;object;forbid;beboundto;assumption)Trytotranslatethemintochinesetogetageneralideaofthisunit.FinishthereadingoncloningDollythesheeptogetfamiliarwithcloning.一．Sentencescontainingkeywordsandphrasesfromthisunit.1.Thinkabouthowthetwinsdiffer.2.Cloningisadiificulttasktoundertake.3.Butatlastthedeterminantionandthepatienceofthescientistspaidoffin1996withabreakthrough.4.Dolly’sappearanceraiseastormofobjectionsandhadagreatimpactonthemediaandpublicimagination.5.Somebegantoreformtheirlegalsystemandforbaderesearchintohumancloning,butothercountrieslikeChinaandtheUK,continuetoaccumulateevidenceoftheabundantmedicalaidthatcloningcouldprovide.6.Dolly’sdeath,likeherbirth,wasboundtoraiseworries.7.Scientistsbelievehumancloningisjustamatteroftimebuttheassumptionthathumancloneshavealreadybeenbornhasn’tbeenprovedyet.二．Readingcomprehension. Britishscientistshavedonesomethingthatmanypeoplethoughtwasimpossible:theycreatedthefirstcloneofanadultmammal.Theclone,namedDolly,isaseven-month-oldsheep,grownfromacellofanadultfemalesheep. Whatisaclone?Acloneisacopy,ageneticcopy.Genesaretheinstructionsforlife.Theytellacellwhattodoandhowtodoit.Genesmakeeachindividualplantoranimaldifferentandunique.Butaclonehasthesamegenesastheoriginalorganism. Cloningisnotnew.Plantshavebeenclonedforcenturies.Newplantsareoftengrownfromcuttingsfromanotherplant.Also,plantslikepineapples,strawberriesandcarnationsaresometimescloned.Onebenefitofcloningisthatwecanmakemanycopiesofthebestandhealthiestplants. Ithasbeenmuchmoredifficulttocloneanimals.Frogshavebeencloned,buttheydiedastadpoles,neverlivinglongenoughtobecomeadultfrogs.Mice,sheepandcattlehavebeenclonedfromembryos.ButDollyisthefirsthealthycloneofanadultmammal.Howdidtheydoit?(1)Anunfertilizedeggwastakenfromasheep.(2)Theeggnucleuswasremoved.(3)Acellwastakenfromtheudderofapregnantsheep.Itwas“starved”,sothatitstoppedgrowing.(4)Thetwocellswerecombinedintooneandthenimplantedinathirdsheep,whereitgrewnormally.(5)Theclonewasborn.Itwasgeneticallyidenticaltothepregnantsheepinstep(3). Thissoundsmucheasierthanitactuallywas.Toendupwithoneclone,thescientistsstartedwith277uddercells.Andtheyneededinawaytomaketheeggcellacceptanewnucleus.Theydidthatbystarvingthecellinstep(3). Itmaysoonbepossibletoclonemanytypesofanimals.Willwealsobeabletoclonehumanorgans,orevenwholehumanbeings?Wehaveonlybeguntothinkaboutthemoralityofcloningtechnology.Maybethequestiontoaskisnotwhetherwecanclonehumans,butinstead,shouldweclonehumans?1.Dollyisasheepbecausesheisgrownfromacellofanadultfemalesheep_____.A.thatwasnotherfatherB.thatwasnothermotherC.thathasnoparentsD.thathasnotanytail2.TellwhichofthefollowingstatementsisTRUE.A.Onlyplantscanbecloned.B.Onlystrawberriesandcarnationscansometimesbecloned.C.Animalsandplantshavequitealonghistoryofcloning.D.Genescantellacellwhattodoandhowtodoitduringcloning.3.Fromthefourthparagraphwecanknowthat_____.A.atadpoleistheearlystageofagrown-upfrogB.atadpoleisafrogwithoutatailC.atadpoleisapoolwherefrogscanliveD.atadpoleisacloneofanadultmammal4.WhatistherightorderintheprocessofthecloneofDolly?a.Takinganunfertilizedeggfromanadultfemalesheep.b.Removingtheegg’snucleus.c.Combiningthetwocellsintooneandthenimplantingitinathirdsheep.d.Takingacellfromtheudderofapregnantsheep.A.abcd B.cabdC.abdc D.dcba