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2014九年级英语下册 Unit 2 DNA Lesson 11 Cloning People?课件 冀教版.ppt

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1、Lesson 11Cloning People?,What things about you show your parents DNA? With a partner, talk about things that are the same between you and your parents. You can start like this: Mom is tall. So am I. Dads eyes are not very big. Neither are mine.,Lead in:,What is DNA? What are identical twins? What do

2、 you know about DNA? Do you know Dolly, the first cloned sheep? What if scientists could make clones of human beings?,the “blueprint of life”,Each clone would have the same DNA. But would they be exactly the same as the original human? Or would they be different?,Scientists clone dinosaurs,Is it pos

3、sible for scientists to clone people?,clone v. n. 克隆 human being 人 exactly adv. 精确地 original adj. 原始的 divide v. 分开 egg n. 卵细胞;卵子,adult adj. 成年的 Dolly 多利(克隆羊的名字) design v. 设计 insect n. 昆虫 damage v. 损害,New words,Presentation:,Listening Task The clones are the _ height. There are _ ways to clone people

4、.,same,two,Can we make clones from dead DNA? What are the two ways to clone people?Would cloning humans be a good or bad thing?,Read carefully and answer the following questions:,We can divide a growing egg in half. Then we would have two eggs with the same DNA. Or we could clone an adult person , t

5、he same way scientists cloned Dolly, the sheep.,1. What if scientists could make clones of human beings?,what if “要是会怎么样/怎么办?”后面是条件状语从句,What if the plants are bad for humans?What if you could combine other animals or plants to make something new?I dont like bungee jumping(蹦极) at all. What if the rop

6、e breaks?You must work hard now. What if you fail in the examination of June?,Language Points:,make clones of sb./sth. clone sb./sth.,clone n. & v. “克隆”,human = human being 指与动物区分的人或人类a human humans (pl.)human being human beings (pl.),man 作“人类”解时,常用单数形式,也可用复数形式,且前面无限定词,单数处理,They are not the bones of

7、 an animal, but human beings. Man/Mankind is fighting a battle against pollution. Man/Mankind is much cleverer than it was a thousand years ago. All progressive _ love peace.,mankind,2. But would they be exactly the same as the original human?,exact adj. 精确的 exactly adv. “恰恰;精确地”,The plane arrived a

8、t exactly 10 oclock. Tell me exactly where Mary lives. It is exactly eight oclock, not one minute more or one minute less.,3. In some ways, clones would be exactly the same.,in some ways “在某些方面”,在某些方面他们看上去一样。从某些方面看你是对的。,In some ways, they look the same.,In some ways, you are right.,4. Because we are

9、 more than our DNA.,more than + 名词 “多于;非但尤其是”more than + 数词 = over +数词 “以上;多于”,He is more than a teacher. He is a doctor, too.There are more than/over fifty students in the classroom.,5. Many things change us: the places we live, the food we eat and the people we know.,6. We can divide a growing egg

10、 in half.,Please divide the apple in half/into halves.Lets divide ourselves into several groups.,divide v. “分开,分割” 常与in或into连用,7. Or we could clone an adult person, the same way scientists cloned Dolly, the sheep.,9. They can design new plants by combining the DNA of other plants.,take from “从提取”put

11、 into “把放入”,8. Scientists can take DNA from one kind of animal and put it into another kind of animal.,design v. “设计;计划” designer n. “设计者”,Who _ can play the guitar? Where _ did you go? Do you have anything _ to say? The _ boys are playing football. Whats that in your the _ hand?,else,else,else,othe

12、r,other,else修饰不定代词、疑问代词或疑问副词,必须位于这些词后面。other修饰名词,位于名词的前面。,10. What else have scientists designed by changing DNA?,11.It may let scientists find new ways to help sick people. 这也许能帮助科学家们找到帮助病人的新方法。sick和ill都是形容词,表示“生病的”,但二者有区别: ill只可用作表语;而sick既可作表语,也可作定语。He is ill/sick in hospital. 他生病住院了。He is a sick

13、boy. (正)He is an ill boy. (误)这个男孩生病了。,12.I think it would be fun to have a twin, but I dont think I would want to be cloned! 我认为有个双胞胎会很有趣,但是我认为我不想被克隆! 当think, believe, expect, suppose, imagine等表示看法、意见的动词后接含not的宾语从句时且主句主语为第一人称,习惯上把not移到主句之中,构成否定转移。例如: I dont think that she is interested in maths. 我认为

14、她对数学没有兴趣。,13.What kind of DNA are they wearing? 他们带有哪种DNA? 【辨析】wear, put on与dress wear表示“穿,穿着;戴,戴着”,强调状态。 put on表示“穿上,戴上”,强调动作。 dress表示“穿衣”,其宾语是表示人的名词,而不是表示衣服的名词。 He always wears a hat. 他总是戴着一顶帽子。 Put on your glasses if you cant see clearly. 如果你看不清的话,就戴上眼镜。,What if it _(rain) tomorrow? Other people

15、think human _(clone) is okay. Everyone except Jim and John _ (be) there when the meeting began. Li Lei, together with us _ (be) playing now. His uncle has been _(die) for many years.,.Fill in each blank with the proper word from the brackets:,rains,cloning,was,dead,is,Practice:,6.Li Lei is always _(

16、worry) about his studies. 7.What he said makes me _(worry). 8.Who is the _(design) of our new school building? 9.The boy can _(exact) learn these numbers by heart. 10. Li Yuchun is 1.74 metres in _(high).,worried,worried,designer,exactly,height,. 同义句转换,每空一词: 1. What else have scientists designed by

17、changing DNA?What _ _ have scientists designed by changing DNA? 2. The computers are made in China. They sell well.The computers _ _ _ in China sell well.The computers _ in China sell well.,other things,which/that are made,made,3. We can only make clones from living DNA.We can only make clones _ _ l

18、iving DNA. 4. It may let scientists find new ways to help people who are ill.It may let scientists find new ways to help _ _. 5. You can divide the apple in half.You can divide the apple _ _ _.,out of,sick people,into two halves,根据汉语意思完成句子,每空一词: 在某些方面,我们可以帮助别人。_ _ _, we can help other people. 2. 许多衣

19、服是棉布做的。Many clothes _ _ _ cotton. 3. 我们可以培植对昆虫有害处的植物。We can make plants that _ _ _ insects.,In some ways,are made of,are bad for,4. 科学家们能从一种动物中提出DNA,并把它放入另一种动物。Scientists can _ DNA _ one kind of animal and _ it _ another kind of animal. 5. 通过DNA,科学家能鉴别你和与你有关的人。From your DNA, scientists can identify you and people _ _ you.,take from,put into,related to,Homework Plan a debate about this topic: is it a good idea to clone humans?,Actions speak louder than words. 行动比言语更为响亮。,

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