Unit3 Reading(II) 公开课教案-刘卓卓

2/2Unit3Reading(II)公开课教案I.LearningobjectivesBytheendofthelesson,studentswillbeableto:1.understandtheusageofthefollowingwordsandexpressions:affect,contract,identify,means,restore,pace,arise,restrict,prohibit,wrestlewith,putsthinplaceandwithoutdoubt;2.usetheabovewordsandexpressionsinnewsituations;3.understandusageofthesuffixeslike-(t)ics,-(o)logy,-(t)ic,-al,-ist,-ian;4.makesentencesusing“as”.II.Keycompetencefocus1.Understandsomenewwordsandexpressions.2.Usetheabove-mentionednewwordsandexpressionsinnewcontexts.III.PredictedareaofdifficultyUsethenewwordsandexpressionsinaproperandcorrectway.IV.TeachingproceduresStep1Lead-inReviewthemainideaofthelecture.T:Hello,everyone,nicetomeetyou!We’velearnedalecturegivenbyabiologistaboutthenewpossibilitiesthatgeneresearchcanbring.Todayweshallreviewthelecture,discusshowtousesomeofthewordsandphrases,andpracticeusingthemindifferentsituations.T:Wouldyoufillintheblanksaccordingtowhatyouhavelearned?Completethepassagewithproperwordsorthecorrectformsofthewordsinbrackets.1._______isknowntoall,genomeeditingbringsmanyexcitingpossibilitiestotheworld.Genesplay2._______criticalroleinshapingourlives.Ourpersonalgenomecarriesalltheinformation3._______(need)tomakeusgrowanddevelop.Alsoitcontainsinformation4._______helpsdetermineourlifespanand5._______(affect)ourchancesofcontractingcertaindiseases.Bycorrecting,adding,deletingorreplacingspecificpartsofthegeneticmaterial,6._______(gene)hopetoapplythetechnologyofgenomeeditingtohelpwith7._______diseasetreatmentandprevention.8._______,questionsariseabouthowtousegenomeediting9._______(appropriate).10.________thepublicargument,genomeeditingisoneofthegreatestinnovationsinthehistoryofscience.【设计意图：通过引导学生完成篇章的语法填空，一方面可以让学生回归课本，巩固所学内容，另一方面也可以将学生引领到词汇学习上面来。】Step2Languagecomprehensionandextension1.Wordstudy:affectTintroducesthemeaningsofaffectthroughdifferentsituations.T:Lookatthesentencefromparagraph2.What’sthemeaningofaffecthere?T:Itmeans“toproduceachangeinsb/sth”.Thinkaboutthesituation:ifachildgrowsupinanunhappyfamily,whatwillhappentothechild?Canyoutranslatethesentence:不幸的家庭环境可能会影响孩子的成长?T:What’sthemeaningofaffectinthesetwosentences?•Atthesightofthemovingscene,allthepeoplepresentwereaffectedtotears.•Heaffectednottoseeme.2.Wordstudy:contractTintroducesthemeaningsofcontractthroughdifferentsituations.T:Inthislecture,contractisaverbthatmeans“togetanillness”.However,itcanalsomeans“tomakealegalagreement”and“tobecomelessorsmaller”whenitisusedinothersituations.Practice:•Unfortunately,hecontractedcancerataveryyoungage.不幸的是，他年纪轻轻就得了癌症。•Theeconomyhascontractedby2.5%sincelastyear.自去年起，经济已经萎缩了2.5个百分点。•Shehascontractedtowork20hoursaweek.她已签订每周工作20小时的合同。T:Inallthesentencesabove,contractisusedasaverb.Ontopofit,itcanalsofunctionasanounwhichmeans“agreement”.Practice:Shehassignedaseven-yearcontractwithaHollywoodstudio.她与好莱坞的一家制片厂签订了七年的合同。3.Wordstudy:identifyTsharesthemeaningandderivativesofidentifywithSs.T:Accordingtothelecture,identifyisaverbthatmeans“tofindordiscoversb/sth”.Practice:Scientistsaretryingtoidentifytherelationshipbetweengenesandpersonality.科学家正在试图找到基因与个性之间的联系。T:Thereisalsoaphraserelatedtoidentify,thatisidentifywithsbwhichmeansyoucanunderstandandsharethefeelingsofsbelse.identifywithsb与某人产生共鸣；谅解；同情Ibelievethatmostreaderswillidentifywiththeauthor.我相信大多数读者会与作者产生共鸣。T:identifyhastwoderivativesthatshouldberemembered,includingidentityandidentification.4.Wordstudy:meansTintroducesthekeypointsofmeanstoSs.T:Thewordmeansisveryspecial,becauseitssingularandpluralsharethesameform.Itmeans“awayofachievingordoingsth”.Thiswordcanbeshownindifferentexpressionslikebymeansofandbynomeans.Practice:•Suchmeansare/suchameansisunpleasant.这样的方式令人不快。•Hecamefirstinthewritingcompetitionbymeansofhardwork.通过勤奋努力，他获得了写作比赛的第一名。•Sheisbynomeansabadgirl.她绝不是一个坏女孩。5.Wordstudy:restoreTshowsSsthemeaningofrestoreanditsderivative.T:Itisobviousthatrestoremeans“tobringbackasituationorfeelingthatexistedbefore”inthislecture.Besides,wearefamiliarwiththenounofrestore—restoration.Practice:•Theoperationrestoredhissight.手术使他恢复了视力。•Thepalaceisclosedforrestoration.王宫因整修而停止开放。6.Wordstudy:paceTguidesSstounderstandthewordpace.T:Whenuseasanoun,pacemeans“thespeedatwhichsb/sthwalks,runsormoves”.Italsomeans“thespeedatwhichsthhappens”.Besides,itcanrefertothefactofsthhappening,changingquickly.Whenmentioned,itiscloselyrelatedtothephrasesatafastpaceandkeeppacewith.Practice:•Therunnerquickenedhispaceandwontherace.赛跑者加快了脚步，赢得了比赛。•Slowdown!Ican’tkeeppacewithyou.慢一点！我跟不上你了。7.Wordstudy:ariseTsharesthekeypointsofarisewithSs.T:Ariseusuallymeans“tohappenortostarttoexist”,whileitalsomeans“tohappenasaresultofaparticularsituation”.Whenreferringtotheword,don’tforgetitspastverbaroseandpastparticiplearisen.Itcanbeshowninthephrasearisefromwhichequalsariseoutof.Practice:•Anewcrisishasarisen/comeup.新危机出现了。•arisefrom=ariseoutof由…引起Mentalproblemscanarisefrom/outofaphysicalcause.身体上的原因可以引起精神上的问题。8.Wordstudy:restrictTshowsSsthemeaningsandderivativeofrestrict.T:Restrictmeans“tolimitthesize,amountorrangeofsth”anditalsomeans“tostopsb/sthfrommovingoractingfreely”.Andthenounofitisrestriction,whichshouldberemembered.Practice:•Inthefuture,wewillrestrictthenumberofstudentsperclassto30.以后我们会把每个班的学生人数限定在30人。•impose/placestrict/tough/tightrestrictionson对…实施严格限制9.Wordstudy:prohibitTsharesthekeypointsofprohibitwithSs.T:Canyouuseotherwordstoreplaceprohibit?Doyouknowanyexpressionswiththewordprohibit?Nowlet’sgettoknowmoreaboutit.Prohibithasthesimilarmeaningwiththewordbanandforbid.Thenounofprohibitisprohibition.Practice:Thelawprohibitspeoplefromhuntinganimalsinthisarea.法律禁止人们在该地区狩猎。10.Expressionstudy:wrestlewithTsharesthemeaningoftheexpressionwrestlewithwithSs.T:Wrestlewithcanbeusedtoreplacedealwith,copewithandsomeotherexpressionsthathavethesamemeaning.Practice:ShehelpedmesolvetheproblemIhadbeenwrestlingwithforweeks.她帮我解决了这个我好几个星期都在努力解决的问题。11.Expressionstudy:put…inplaceTleadsSstorecallsomephraseswiththewordplaceandasksthemtofinishtheexerciseswiththesephrases.T:Placeisawordthatcanbeseeninmanyexpressions.Canyoulistsomeofthem?e.g.putsthinplace,haveanimportantplacein,taketheplaceof,inthefirstplaceT:Pleasefillintheblankswithphrasesabovecorrectly.12.Expressionstudy:withoutdoubtTleadsSstomakesomesentenceswiththeworddoubt.T:Wecanusedoubtindifferentexpressions,likethephrasewithout/beyonddoubtorthesentencepatternthereisnodoubtthat.Now,let’sdosomepracticerelatedtoit.Practice:•Heis,withoutdoubt,oneoftheworld’smostpowerfulgeneticists.毫无疑问，他是世界上最有影响力的遗传学家之一。•Thereisnodoubtthatenoughconcernmustbepaidtotheproblemofairpollution.毫无疑问，我们必须对空气污染问题有足够的重视。【设计意图：通过在阅读文本时去梳理重点单词和短语，可以更好地培养学生的学习探究能力。在语言知识练习环节中，通过不断创设新的语言情境，鼓励学生理解和运用重点单词和短语，为下一步语言知识的运用打下基础。】Step3Consolidation1.Summaryofvocabulary.T:Todaywehavelearnedsomewordsandexpressionsinthelecture.Ifpossible,trytoreviewasoftenaspossible.2.TasksSstofinishexerciseB1.T:Pleas