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1、Lesson 29: DNA—TheStoryofYou【学习目标】知识目标： DNA, blueprint, general, complex, twin, repeat, pattern, Identify, related, grandson, granddaughter, instruction；in general 一般而言；通常 except for 除……之外 be related to 与……相关 billions of数十亿计的； 大量；But building a
2、 living thing is far more complex than building a house. To listen and understand the passage about DNA To know more about DNA.能力目标：TolistenandunderstandthepassageaboutDNA.情感目标：引导学生发挥想象，引起对科学知识的兴趣，树立自主学习的意识。【重点及难点】Ingeneral,ablueprintisadrawingthatshowshowtoputa
3、housetogetherwithmanydifferentparts.Butbuildingalivingthingisfarmorecomplexthanbuildingahouse.Exceptforsometwins,everylivingthinghasitsownuniqueDNA.FromyourDNA,scientistscanidentifynotonlyyou,butalsopeoplewhoarerelatedtoyou.【导学过程】一、自主预习【预习指导】1.自学教材第29课单词与词组，你可以听录
4、音跟读，根据音标读，或者请教别人读。做到发音标准，弄清词性和汉语意思。2.自学教材，仔细读课文至少三遍，弄清课文大意。用横线划出文中的重要句子。【自主学习】1.认读识记本课单词和短语。2.预习本课课文，完成Exercise1onpage75。3.根据汉语提示完成句子。 1)She had a confused idea of life in ________ (一般的，普遍的). 2) Could you ______ (重复) that question for me? 3)You'll get nowhere
5、 if you follow his __________ (方法). 4)Our culture is more _______ (复杂的) than he knows. 5) Would you be able to _______ (辨别) the man who robbed you? 在自学过程中，你还有哪些疑惑在文中用线画出来，并把它写下来，和你的同伴交流。二、合作探究Task1.读课文，workoutLet'sDoIt1. Task3.再读课文，找出重点及疑难点；workoutLet'sDoIt2/3
6、。 Task4.小组讨论导学案上的LanguagePoints。Task5.分组讨论，完成Let'sDoIt4。三、交流展示Language points: (一)____ _________, a blueprint is a drawing that shows how to put a house together with many different parts.一般而言，蓝图就是一副图纸，它显示一座房子的构造。 in general意思是“一般而言；概括说来(通常置于句首)”。也可以用generally
7、speaking来表示。 例：In general/ Generally speaking, women cry more easily than men. 练习：_________________（总的来说），your idea is right. (二)But building a living thing is ________ more complex than building a house.但创造一个生物比盖房子要复杂得多。 far用来修饰形容词和副词的比较级，表示程度，译为“……得多”。这样的词语还有
8、much, still, even, no, a little, a bit, a lot, rather, any等。 例：The room is ___ ________larger than that one. 这个房间比那个稍大一点。 He works _______ harder than ever.
