Lesson29DNA—TheStoryofYou.ppt

,Welookdifferent,becausewehavedifferentDNA,Wearethetwins,wehavethesameDNA.,ThisistheshapeofDNA.Doyouthinkitsmagic?,Thinkaboutit:1.WhatdoyouknowaboutDNA?2.WhatcanscientistsdowithDNA?,LookintoScience,Unit5,DNATheStoryofYou,Lesson29,ZhaocunJuniorHighSchoolLiuXiya,YourDNAcomesfromyourparents.,WheredoesyourDNAcomefrom?,Howtallareyou?Whatcolourareyoureyes?Whatsizeareyourfeet?AllthesethingsarestronglyinfluencedbyyourDNAbeforeyouareborn.,被深深影响,DNA脱氧核糖核酸blueprintn.蓝图generaladj.一般的complexadj.复杂的twin-twinsn.双胞胎repeatv.重复,复述,背诵patternn.模式，形式identifyv.确认，鉴别relatedadj.有关的，相关的grandsonn.孙子，外孙granddaughtern.孙女，外孙女instructionn.指示，说明,ReviewWords:,Listening:Listentothetape,thenanswerthequestions.,WhatisDNA?HowisDNA?,1Whatisablueprint?2Whichismorecomplex，buildingalivingthingorbuildingahouse?3DosometwinshavethesameDNA?4.IsitpossibletochangeyourDNA?5.WhoseDNAisrelatedtoyours?,Ingeneral,Ablueprintisadrawingthatshowshowtoputahousetogetherwithmanydifferentparts.,Buildingalivingthing.,Yes,theydo.,Reading:Readandanswer.,一般来说，蓝图是一张显示如何将一座房子的许多不同部分组装在一起的图画。ingeneral意思是“一般而言，概括说来（通常置于句首）”,Ingeneral,girlscrymoreeasierthanboys.,Yes.Inthefuture,scientistsmightbeabletochangeyourDNA.,Myparentsandgrandparents.,DNAisfantastic.,Why?,Languagepoints:,1.Exceptforsometwins,everylivingthinghasitsownuniqueDNA.除了一些双胞胎之外，每个生物都有它独特的DNA.,exceptfor,意思是“除了以外，除去，不包括它后面的内容”用于表示对主要部分的肯定和对部分的否定。它表示不同类事物之间的关系。,e.g.Hisarticleisgoodexceptforafewgrammarmistakes.,跟踪训练,1.Mr.Smithisagoodman,_hisbadtemper.A.exceptB.exceptforC.besidesD.beside,B,2.FromyourDNA,scientistscanidentifynotonlyyou,butalsopeoplewhoarerelatedtoyou.从你的DNA中，科学家们不但能够辨认出你，而且能够辨认出和你有血缘关系的人。,(1).notonlybutalso,意为“不但而且”，它可以连接句中句子成相同的部分。本句中它连接了两个并列的宾语，其中第二个宾语中包含一个who引导的定语从句.,(2).berelatedto意为“与有关”，后加名词或代词做介词to的宾语,e.g.Tigersarenotrelatedtowolves.,跟踪训练：,2.她不仅会唱中文歌曲，还会唱英文歌曲.Shecansing_Chinesesongs_Englishsongs.。,notonlybutalso,3.我想他们与这件事情有关。Ithinkthey_related_thismatter.,areto,3.YourDNAhasbillionsofinstructionsthatexplainwhyyouarethewayyouare.你的DNA中有数十亿个指令，来解释你为什么是你现在这个样子。,(1).way在本剧中意思是“情况，状态”。,(2).billionsof数以亿计的表示一个概数,类似的还有：hunderdsof,数百的thousandsof,数千的millionsof，数百万的,4.Butbuildingalivingthingisfarmorecomplexthanbuildingahouse.但是创造一个生物远比建造一座房子复杂得多。,“far+比较级”意为“得多”，“此外，比较级前还可用much,even，still,abit,alittle,alot等词或词组加以修饰。,e.g.Mybrotherismuchelderthanme.我的哥哥比我大得多。,跟踪训练4.这个单元比那个单元容易得多。Thisunitis_easierthanthatone.5.这本书比那本有趣得多。Thisbookis_moreinterestingthanthatone.,far/much,far/much,Itstimetopractice!,Fillintheblankswiththephrasesinthebox.,ingeneralexceptfornotonlybutalsorelatedtoevenifthesameas,Letsdoit2.,1Yourhomeworkisquitegood_afewspellingmistakes.2_theyoung_theoldlikepopmusic.3Kateshairis_colour_hersisters.4_，womenlivelongerthanmen.5_manydifficultiesremain，wecanovercomethem.6Iswealth_happiness?,exceptfor,Notonlybutalso,thesameas,Ingeneral,Evenif,relatedto,一、根据句意及首字母提示完成单词1LucyandLilyaret_Theylookthesame.2Ing_，womendoitmoreeasilythanmen.3.Itsimportantforyoutor_thetext.4Mikehasagranddaughterandag_5Beforeyoutakethismedicine,youmustreadthei_.,eneral,wins,epeat,randson,nstructions,isrelatedto,三、根据汉语意思完成句子6.他和我家有亲戚关系。He_myfamily.7凯特和她姐姐有同样颜色的头发。Katehas_colourofhair_hersister.,thesameas,来自点拨训练,8.数十亿年前，地球只是一团尘埃。_yearsago,theearthwasjustacloudofdust.9他的话对她有很大影响。Shewas_byhiswords.10(中考盐城)李明不仅聪明而且勤奋。LiMingis_,stronglyinfluenced,Billionsof,notonlycleverbutalsohardworking,来自点拨训练,二、单项选择11Myarticleisgood_somespellingmistakes.AexceptBexceptforCBesideDbesides12(中考六盘水)Notonlyyoubutalsohe_thesecret.AknowsBknowChaveknownDtoknow,B,A,WeallKnow!,YourDNAcomesfromyourparents.YouhaveyourownuniqueDNA,butitrepeatspatternsfromyourparentsDNA.FromyourDNA,scientistscanidentifynotonlyyou,butalsopeoplewhoarerelatedtoyou,Yourparentsandgrandparentsarerelatedtoyou,andyouhavetheirDNA.Whenyouhaveagrandsonorgranddaughter,heorshewillhaveyourDNA.,FreeTalk,IsitagoodideatochangetheDNAofthefoodweeat?,1,1.Writethecompositiondowninyourbook.,2,Readthisarticleatleastthreetimes.,3,Finish“Letsdoit”NO.3.,Doingthetasks,Homework,Inaword.,YouDNAhasbillionsofinstructionsthatexplainthatwhyyouarethewayyouare.Itsoneofthemostamazingthingsontheearth!-Thisisthestoryo