1. Revision Revision 1. 与 … 不同 2. 使沮丧 3. 适合于 … 的 4. 在另一方面 5. 对 … 产生巨大的影响 6. 支持, 赞成；有利于 7. 反对 … differ from cast down be appropriate to on the other hand have a great impact on in favour of object to

3. Let’s enjoy a short film

4. Do you think it possible for people to clone a dinosaur ? Why ? clone a dinosaur ? Why ?

5. 1.The writer of the text_____ A. is excited by the possibility of cloning fierce and extinct animals. cloning fierce and extinct animals. B. believes that extinct animals can be B. believes that extinct animals can be brought back to life by cloning. brought back to life by cloning. C. thinks it impossible or unsuitable C. thinks it impossible or unsuitable to clone extinct animals like dinosaurs. to clone extinct animals like dinosaurs. D. dreams of dinosaurs D. dreams of dinosaurs returning to the earth. returning to the earth.

6. 2. The film Jurassic Park is popular because___. A. people are interested in the subject of cloning B. all the actors are dinosaurs of cloning B. all the actors are dinosaurs C. it was directed by a scientist C. it was directed by a scientist who clones dinosaurs who clones dinosaurs D. it proves very interesting D. it proves very interesting

7. 3.Which of the following is true?____ A. Mice were cloned in 1981. A. Mice were cloned in 1981. B. Dolly the sheep was the first cloned B. Dolly the sheep was the first cloned animal. animal. C. The name of the cloned cow is “Bison” C. The name of the cloned cow is “Bison” D. China was successful D. China was successful in cloning mammals. in cloning mammals.

8. 4. The reasons why a group of cloned animals all die of the same illness do NOT include____. A. they have the same arrangement of genes A. they have the same arrangement of genes B. there isn’t enough diversity in the group B. there isn’t enough diversity in the group for it to overcome illnesses for it to overcome illnesses C. the illness is a new one C. the illness is a new one D. their arrangement of genes can not resist that new disease D. their arrangement of genes can not resist that new disease

9. 5. We can infer from the text that____ A. scientists are experimenting A. scientists are experimenting to clone dinosaurs to clone dinosaurs B. dinosaurs will never return to the earth B. dinosaurs will never return to the earth C. cloned animals will only live in the zoo C. cloned animals will only live in the zoo D. the DNA of dinosaurs can only survive D. the DNA of dinosaurs can only survive 10 000 year 10 000 year

10. 1.Why shouldn`t you clone an extinct animal if there isn`t ecough diversity in the group? 2.Why can`t you clone the DNA of animals that have been extinct longer than 10,000 years? 3.Why is it wrong to clone an extinct animal if it would have to live 3.Why is it wrong to clone an extinct animal if it would have to live in a zoo? in a zoo? Reading Reading

11. 1.Why shouldn’t you clone an extinct animal if there isn’t ecough diversity in the group? There will not be enough genetic variation in the group to be able to resist new illnesses There will not be enough genetic variation in the group to be able to resist new illnesses 2.Why can’t you clone the DNA of animals that have been extinct longer than 10,000 years? The DNA of animals more than 10,000 years old is not suitable for cloning, for it can`t survive so long. The DNA of animals more than 10,000 years old is not suitable for cloning, for it can`t survive so long.

12. 3. Why is it wrong to clone an extinct animal 3. Why is it wrong to clone an extinct animal if it would have to live in a zoo? if it would have to live in a zoo? It is not a good idea to clone an animal that would have to live in a zoo because it is not a suitable habitat to develop and incresae its numbers. The zoo is not a natural environment for a wild animal. It is not a good idea to clone an animal that would have to live in a zoo because it is not a suitable habitat to develop and incresae its numbers. The zoo is not a natural environment for a wild animal.

13. Useful Expressions 1. 根据 …, 以 … 为基础 2. 普通老百姓 3. 进行实验 4. 生出 5. 不时，偶尔 6. 使恢复生气 7. 把 … 传给 … 8. 过自然生活 base… on / be based on ordinary people experiment with give birth to from time to time pass on … to… bring back to life lead a natrual life

15. Dodo bird (1755) Great Auk (1844) Auroch (1627) Quagga (1883) Which of them is worth restoring by means of cloning ? by means of cloning ?

16. Agreement That`s a good / great idea. I support…because… I agree with … because… Your argument has convinced me because… Your ideas sound very encouraging to me. Disagreement I would like to agree with you but… I cannot accept your argement because… How can you believe that? No, that`s not reasonable because…

18. I agree that the clone technology should be used. It would be wonderful if… I don’t agree the clone technology should be used. It would be bad for… if …

19. Write a paragraph showing your opinion about cloning Write a paragraph showing your opinion about cloning Key sentence structures Homework

20. 1. The popularity of the film Jurassic Park, in which a scientist clones several different kinds of extinct dinosaurs, proves how interested ordinary people are in the subject. 长句难句

21. 电影《侏罗纪公园》的欢迎证实 了普通人对这一话题是多么感兴趣, 在该电影中一位科学家克隆了几种不 同的恐龙。 in which 引导定语从句, how 引导 宾语从句。

22. 2. From time to time people suggest that the animals that have disappeared from the earth, like dinosaurs, can possibly be brought back to life through cloning. 人们时常设想从地球上消失的动物, 例如恐龙, 有可能通过克隆技术使它 们复活。

23. from time to time 有时, 间或, 偶尔, = occasionally, now and then 。 3. It is useless to clone an animal if there is not enough diversity in the group for it to overcome illnesses. 该群中如果没有足够的多样性使它 克服疾病, 克隆动物就没有用。

24. 当动词不定式、动名词或从句作主语 时, 通常把它们放在谓语之后, 而用 it 作 句子的形式主语。

25. 4. Diversity in a group means having animals with their genes arranged in different ways. 群中的多样性指的是拥有基因排列方 式不同的动物。 with their genes arranged in different ways 作定语,in different ways 以不同 的方式。

26. 5....but others will survive and pass on the ability to resist that disease to their children....... 其他的将存活下来并传递给其 后代抵抗这种病的能力。

27. resist 作及物动词主要有三个义项 : 抵抗, 对抗 ; 抵挡, 防止 ; ( 与 cannot, could not 连用 ) 无法抗 拒, 无法抵挡。

28. base on/upon 以 …… 为基础, 依据 其结构为 :base sth. on/upon sth. is based on/upon 6. Based on what we know now, you can not clone animals that have been extinct longer than 10000 years. 据我们现在所知, 绝种一万年以上的 动物不能克隆。

30. Language Points 1. cast down: 使沮丧 ; 毁掉 Finding out the truth made him ~. Finding out the truth made him ~. Don’t be so ~. Just keep up your spirits. Don’t be so ~. Just keep up your spirits. 2. differ from : A + ~ + B Her method doesn’t differ much from mine. Her method doesn’t differ much from mine. Chinese differs greatly from Japanese Chinese differs greatly from Japanese in pronunciation. in pronunciation. differ from / with sb. on / about / over sth. differ from / with sb. on / about / over sth. We different from/ with them on / about We different from/ with them on / about that question. (be different from) that question. (be different from)