人教版高中英语选修8Unit2ReadingPPT教案

1、人教版高中英语选修人教版高中英语选修8Unit2ReadingUnit 2 ReadingCloning: Where Is It Cloning: Where Is It Leading Us?Leading Us? 第1页/共48页exactcuttingtwinidenticalcommercialstraightforwardcomplicatedadj. 精确的精确的; 准确的准确的n. 剪枝剪枝; 剪报剪报; 剪纸剪纸n. 双胞胎之一双胞胎之一; 孪生儿之一孪生儿之一adj. 成对的成对的; 成双的成双的adj. 同一的同一的; 一模一样的一模一样的adj. 商业的商业的; 贸易的

2、贸易的adj. 简单的简单的; 直接的直接的; 坦率的坦率的adj. 复杂的复杂的; 难懂的难懂的Words andExpressions第2页/共48页undertakebreakthroughprocedurenucleussomaticembryocarriercastvt. 着手着手; 从事从事; 承担承担n. 突破突破n. 程序程序; 步骤步骤; 手续手续n. 原子核原子核; 中心中心adj. 躯体的躯体的; 肉体的肉体的; 细胞体的细胞体的n. 胚胚; 胚胎胚胎; 萌芽时期萌芽时期n. 携带者携带者; 搬运工搬运工; 运输工具运输工具vt. 扔扔; 投投; 掷掷Words andE

3、xpressions第3页/共48页altogetherarbitraryfatecorrectionobjectobjectionimpactmediumadv. 总共总共; 完全地完全地adj. 任意的任意的n. 命运命运; 天命天命n. 改正改正; 纠正纠正; 修正修正vi. 反对反对; 不赞成不赞成n. 不赞成不赞成; 反对反对; 异议异议n. 撞击撞击; 冲击冲击; 巨大的影响巨大的影响n. (pl media) 媒介媒介; 手段手段; 工具工具Words andExpressions第4页/共48页the mediaobtainattainmoralconservativeforb

4、idaccumulate大众传播媒体（如电视、大众传播媒体（如电视、报纸等）报纸等）vt. 获得获得; 赢得赢得vt. 获得获得; 到达（水平、到达（水平、 年龄、状况等）年龄、状况等）adj. 道德（上）的道德（上）的; 伦理的伦理的adj. 保守的保守的; 守旧的守旧的vt. 禁止禁止; 不准不准vt. & vi. 积累积累; 聚积聚积Words andExpressions第5页/共48页pay off cast downobject to in favour of 沮丧；不愉快沮丧；不愉快得到好结果；取得成功；得到好结果；取得成功；偿清偿清赞成；支持赞成；支持反对反对Match

5、第6页/共48页Dolly the Sheep第7页/共48页Discussion1. How is a clone produced?2. What benefits can humans gain from cloning?3. What problems may arise when humans are cloned?第8页/共48页1. To summarize the main idea of the passage2. To tell how Dolly was produced3. To know why cloning is a controversial issue第9页/

6、共48页ABA: I think cloning is good for us. Because B: I think cloning is bad for us. Because Is cloning good or bad for us?Debate第10页/共48页These expressions may help. Do you think it is wise to ?Whats your opinion of ? I think you should I agree with you that I would never accept Im happy to accept a c

7、lone but I would never accept a clone I dont mind but 第11页/共48页Skimming for general idea第12页/共48页Choose the best answer.第13页/共48页impartial he/she does not state any personal opinion about cloningFill in the blanks.P12 3第14页/共48页Procedure of Cloning a Sheep第15页/共48页Scanning for specific information第1

8、6页/共48页1. From the first paragraph it can be inferred that _. A. cloning is a manmade technology B. cloning always exists around us C. cloning is very strange to human beings D. cloning is only conducted in laboratories Choose the best answer.第17页/共48页第18页/共48页第19页/共48页第20页/共48页Answer these question

9、s.1 What are the two major uses of cloning?2 Why is it easier to make commercial plant clones than animal clones?3 What was the first clone from an adult animal? At what age did this clone die?4 Why is cloning controversial in some countries?P12 1第21页/共48页1 .What are the two major uses of cloning?2

10、.Why is it easier to make commercial plant clones than animal clones?The first use is to produce commercial quantities of plants. The second is to research on new plant species and do medical research on animals.Cloning plants is straightforward, but the cloning of animals is very complicated.第22页/共

11、48页3. What was the first clone from an adult animal? At what age did this clone die?4. Why is cloning controversial in some countries?The first clone from an adult animal was Dolly the sheep. She died in 2003.Cloning is controversial in some countries for moral and religious reasons.第23页/共48页Fill in

12、 the blanks.DefinitionCloning is a way to exactly (1)_ another plant or animal.(2) _cloning A new plant is born from the (3) _ of a growing one. In a laboratory, a new plant is grown out of a small part of an original one. An egg produces twins identical in sex and appearance.copyNaturalcutting第24页/

13、共48页Two major advantages Gardeners produce plants in large (4) _ _, which will bring in much money. It is of great (5) _ for scientists to do different kinds of research on new plant species or animals. quantities / numbersvalue第25页/共48页The (6)_of cloningDolly thesheep (7) _ female sheep are needed.

14、 From female sheep A, an egg cell is taken, with its nucleus removed. From female sheep B, a somatic cell is taken, with a nucleus picked. The egg cell from Sheep A and the nucleus from Sheep B are joined together to produce an embryo. The embryo is put into female sheep C and months later a (8) _ i

15、s born. procedure /process /stepsThreelamb第26页/共48页Two disadvantages It got an illness which is more (9) _ to a much older animal. Its life span was a half shorter.Two different(10)_ It is possible to use cloning to cure illnesses. It is unethical to clone a human. appropriateopinions / views第27页/共4

16、8页Problems or dangers of cloningAdvantages of cloningP12 2第28页/共48页Problems or dangers of cloningAdvantages of cloningAnimal clones may develop the illnesses of older animals.Medical cloning could produce cures for serious illnesses in humans. Animal clones may die younger than the donor animals.Clo

17、ning plants can produce plants of similar quality for sale.第29页/共48页Problems or dangers of cloningAdvantages of cloningEvil leaders may want to clone themselves.Cloning plants can be useful for research on new plant species.There are moral objections to cloning human beings.Cloning can help save end

18、angered animals.第30页/共48页Careful reading重难点句式分析重难点句式分析第31页/共48页1. It also happens in animals when twins identical in sex and appearance are produced from the same original egg.时间状语从时间状语从句句这种现象也发生在动物身上，从同一个原这种现象也发生在动物身上，从同一个原生卵子产生性别和相貌相同的双胞胎也是生卵子产生性别和相貌相同的双胞胎也是克隆。克隆。original egg原生卵子原生卵子定语定语 修饰修饰twins

19、identical 同一的；完全相同同一的；完全相同的的第32页/共48页TranslationThe two rooms were virtually identical.1. 这两个房间几乎一模一样。这两个房间几乎一模一样。 When he was a child he was always trying out new ideas.2. 他小时候总是尝试一些新的想法。他小时候总是尝试一些新的想法。第33页/共48页2. Although at present human egg cells and embryos needed for cloning research are diffi

20、cult to obtain, newspapers wrote of evil leaders hoping to clone themselves to attain their ambitions.让步状语从让步状语从句句尽管目前供克隆研究的人体细胞和胚胎还尽管目前供克隆研究的人体细胞和胚胎还很难得到，但是报纸报道说，有些邪恶头很难得到，但是报纸报道说，有些邪恶头目希望把自己克隆出来以实现他们的野心。目希望把自己克隆出来以实现他们的野心。attain实现；获得实现；获得v-ed 短语修饰短语修饰human egg cells and embryoswrite of vt. 写写, 记述记

21、述第34页/共48页TranslationHe has attained the highest grade in his music exams.1.他在他在音乐考试音乐考试中得了最高分。中得了最高分。 Hes rather shy, although hes not as bad as he used to be.2.他很他很腼腆腼腆，但是比以前要好一些了，但是比以前要好一些了。第35页/共48页Cloning is a way of _ of another animal or plant. It has two major uses. One is to produce commerc

22、ial quantities of plants; _ is for research on new plant species and for medical research on animals. Cloning plants is straightforward _ cloning animals is difficult to undertake. However, scientists hard work _ in 1996 _ the cloning of Dolly the sheep. Though it was encouraging _ the sheep seemed

23、to grow normally, it died after a short life of only six and a half years in the world. the othermaking an exact copy whilewiththatpaid offComplete the passage with proper words, which will help you retell the text.第36页/共48页As a result, it _ (puzzle) all scientists with different questions. Besides,

24、 the appearance of Dolly raised a storm of _ (object) and public imagination. _ got people to think about the possibilities of _(use) clones to cure serious diseases and even to produce human beings. However, some governments became more nervous and conservative and they forbade research _ human clo

25、ning. Others continued to accumulate evidence of abundant medical aid _ could be provided by cloning.puzzledobjectionsItusingwhich/thatinto第37页/共48页Look at these pictures below first.第38页/共48页第39页/共48页第40页/共48页“Holy great mother of God, Ive been cloned!”第41页/共48页1. 克隆技术现在还不成熟克隆技术现在还不成熟, 克克 隆人可能有很多先天

26、性生隆人可能有很多先天性生理缺陷。理缺陷。2. 克隆人的身份难以认定克隆人的身份难以认定, 他他 们与被克隆者之间的关系们与被克隆者之间的关系无法纳入现有的伦理体系。无法纳入现有的伦理体系。反对克隆人反对克隆人Some opinions about clone第42页/共48页第43页/共48页支持克隆支持克隆人人What about you?Itisaquestionworth thinking about. 第44页/共48页Now two minutes to test your spelling.1. English-Chinese twin, breakthrough, procedure, carrier, correction, objection, medium 2. Chinese-English 商业的，伦理的，从事，到达，禁止，商业的，伦理的，从事，到达，禁止， 简单的，保守的，总共，积累，获得，简单的，保守的，总