人教版高中英语选修八课件：Unit 2 Workbook

1、Workbook Workbook Reading task A DEBATE “Medical cloning” is a medical cure using cells from an embryo to cure very serious illnesses. The idea is to take healthy cells from a patient and create copies that can be used to repair damaged or diseased parts of the patient. In theory, medical cloning wi

2、ll be very useful for curing patients but a large amount of research is organized by the government and is strictly controlled. Background The research can Create cloned human cells (but not older than 14 days) Be used to better understand early human development Be used to help with genetic disease

3、s of old age Be used for transplants for incurable conditions without the problem of transplant rejection While having a debate, several things to remember: The person who is leading the team that supports the topic will speak first. The person who is leading the team that disagrees with the topic w

4、ill speak next. Then other people can take turns to speak in a free discussion. Everyone must listen when other people are speaking. No one can be rude to other speakers and must always talk to the chairman. The chairperson will stop anyone who repeats arguments that have already been made. Anyone c

5、an reply to another persons argument. Team Whats their argument?Two reasons for / against medical cloning AFor medical cloning BAgainst medical cloning Read the arguments above and fill in the chart. (Page 59) Team A: two reasons for medical cloning 1. To cure serious illnesses that have no cure at

6、the moment 2. to help people who have diseases which make them gradually lose their ability to move easily or to think Team B: two reasons against medical cloning 1. To make the stem cells that will cure an illness of one person, you have to Kill another human being. 2. Scientists are worried about

7、the efficiency of the system. Language Points 1.It is a sort of competition with a chairperson in charge to make sure of fair play. 它是一种竞赛它是一种竞赛, 由主持人负责确保竞争的公平。由主持人负责确保竞争的公平。 in charge: 主管主管, 领导领导, 负责负责, 处于领导或管理处于领导或管理 的职位的职位 the security agent in charge at the airport. 机场保安部的负责人机场保安部的负责人 2. After t

8、hat, the issue can be discussed by anyone in the room one at a time. 然后然后, 房间里的每个人都可以对问题进行讨论，房间里的每个人都可以对问题进行讨论， 每次只能有一人发言。每次只能有一人发言。 at a time 依次依次, 逐一逐一, 每次每次 Dont try to do everything at once, take it a bit at a time. 不要什么事情都一块干不要什么事情都一块干, 要一次做一点。要一次做一点。 Take the pills two at a time. 每次服每次服2粒。粒。 a

9、t one time 一度一度, 从前从前 At one time I used to go skiing every winter. 我有一度每到冬天就去滑雪。我有一度每到冬天就去滑雪。 At one time they met frequently. 一度他们经常见面。一度他们经常见面。 3. If you believe that human life comes into existence as soon as the cells start to grow, then the practice of removing human stem cells from an embryo

10、kills it. 如果你认为人的生命从细胞开始生长的如果你认为人的生命从细胞开始生长的 时候就开始存在的话时候就开始存在的话, 那么从胚胎中提取那么从胚胎中提取 人类干细胞的行为就是杀人。人类干细胞的行为就是杀人。 写作任务写作任务: Give your opinion on cloning 写作要求写作要求: 注意记叙文的表达方式注意记叙文的表达方式 要写明白自己的观点要写明白自己的观点, 层次要分明。层次要分明。 写作建议写作建议: 本单元主要讲述了本单元主要讲述了“cloning”存在的存在的 问题以及人们的态度问题以及人们的态度, 文中可适当就此进行发挥。文中可适当就此进行发挥。 W

11、riting I Discussion ( 5ms ) Discuss in groups and write down the information you get. After the discussion, the students write a passage according to the writing task. (There are at least 100 words.) Writing II ( 20ms ) Writing III ( 12ms ) Checking the articles. 1. Ask the students to check the art

12、icles for their partners. 2. Show some articles on the screen, other students should give some advice. Together with the modern advances in science and technology, the news that Dolly had been born was announced in 1997. However, Dollys death raised many opinions about cloning. Personally, I would l

13、ike to agree that cloning may do no good to our human beings. One possible version Firstly, seeing Dolly, we may think that cloning animals can easily develop a disease. They cant live long. Secondly, we cant clone animals that have been extinct longer than 10000 years, even if the DNA of dinosaurs could survive this long. Thirdly, based on what we know now, human cloning is just a matter of time. But