Using LanguageⅡ第一课时教学实录

Using language Teaching aim: 1.Target language a. 重点词汇

debate, issue, competition, in charge, topic, argument, reply to, summarize, profitable, donate, existence, embryo, justified, transfer, ethically. b. 重点句子

I suggest that medical cloning is very important of curing serious illnesses that at present have no cure. I would like to suggest that medical cloning is not as simple as issue as my colleague claims. 2. Ability goals能力目标 1.To train the students’ reading ability

2. To make the students know something about the dinosaurs.. Key and difficult points: To understand the passage as a whole. Teaching procedure:

Step I Revision 1. Dictation 2. Read the new words again. Step II. Warming up Do you think it is possible to clone dinosaurs? If not,why? If yes, do you think that’s good for human beings? Why?

Step III. Reading Scanning (T/F) 1.

Scientists are still experimenting with cloning mammals because they think it can make money. 2.

The animals that have disappeared from the earth, like dinosaurs, can be brought back to life through cloning. 3.

If we can clone any extinct animals, we should let them live in a zoo. Detail reading 1. Why shouldn’t you clone an extinct animal if there isn’t enough diversity in the group? 2.Why is it wrong to clone an extinct animal if it would have to live in a zoo?

3.Why can’t you clone the DNA of animals that have been extinct longer than 10,000 years? 4. Why it is either impossible or unsuitable to clone extinct animals Step IV. further understanding 1. The writer of the text_____ A. is excited by the possibility of cloning fierce and extinct animals B. believes that extinct animals can be brought back to life by cloning C. thinks it impossible or unsuitable to clone extinct animals like dinosaurs D. dreams of dinosaurs returning to the earth

2. The film Jurassic Park is popular because _____. A. people are interested in the subject of cloning B. all the actors are dinosaurs C. it was directed by a scientist who clones dinosaurs D. it proves very interesting 3. Which of the following is true? ____ A.

Mice were cloned in 1981. B. Dolly the sheep was the first cloned animal. C. The name of the cloned cow is “Bison”

D. China was successful in cloning mammals. 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 B. there isn’t enough diversity in the group for it to overcome illnesses C. the illness is a new one D. their arrangement of genes can not resist that new disease 5. We can infer from the text that____ A. scientists are experimenting to clone dinosaurs B. dinosaurs will never return to the earth C. cloned animals will only live in the zoo D. the DNA of dinosaurs can only survive 10 000 year Step V Explanation 1. The popularity of films such as Jurassic Park, in which a scientist clones several kinds of extinct dinosaurs, proves how the idea struck a mixture of fear and excitement into people’s heart. in which引导定语从句, how引导宾语从句

stick…in to one’s heart: 使……刻骨铭心

The accident struck the fear into his heart. 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。

from time to time有时, 间或, 偶尔,= occasionally, now and then They came to see us from time to time. bring back to life使复生，使复活

No one would bring the dead person back to life. 3. It would be unfair to clone any extinct animal if they would have to live in a zoo. 如果你克隆出任何绝种动物，而它们必须生活在动物园里那是不公平的。

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。

4. All efforts of cloning an animal will be in vain if there is not enough diversity in the group to overcome illnesses. 如果某个动物群体里没有足够的多样性以战胜疾病，那么克隆这种动物的所有努力都将是无用的。

in vain: with no result; useless(ly) Try in vain to sleep

All our work was in vain. 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。

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。

resist 作及物动词主要有三个义项: ①抵抗, 对抗; ②抵挡, 防止; ③

不屈从，经得住

(常与cannot, could not连用, 无法抗拒, 无法抵挡) 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。

base on/upon 以……为基础, 依据

其结构为: base sth. on/upon sth. is based on/upon