Using LanguageⅡ国家获奖教案

Unit 2 Cloning

Section Ⅱ

Using

Language

吉林省辉南县第一中学

王艳

一

课前新知预习

词汇过关

基础词汇

1.

adj.

2.

vt.

3.

adv.

4.

vi.

5.

vt.

vi.

n.

6.

n.

7.

vi. & vt.

n.

8.

n.

9.

adj.

10.

vt. & vi.

拓展词汇

1.

n．假定；设想→assume v．假定；设想

2.

vt.抵抗；对抗；耐得住→resistance n．抵抗；对抗

→resistant adj.抵抗的；对抗的

3.

adv.仅；只；不过→mere adj.仅仅的；纯粹的

4.

n．装饰→decorate vt.装饰

5.

vt.崇拜；爱慕；喜爱→adoration n．热爱；敬慕；爱慕；

崇拜→adorable adj.可爱的；讨人喜欢的

6.

adj.合情理的；讲道理的；公道的→reason n．理由；

短语自查

1．

一定或注定(做)……

2．

使……刻骨铭心

3．

不时；偶尔

4．

使复生；使复活

必须做的；义务的；强迫的；强制的

欠(账、钱、人情等)；归功于……

立刻；不久

退休；离开

打扰

操心

烦扰

规则；规章；法规

打；撞击；罢工

罢工

缺点；不利条件

不能的；不会的

孵出；孵卵；孵化

5．______

白费力气；枉费心机

6．

情况/状况很好(坏) 常用词块

1．a mixture of fear and excitement

2．the initial requirement

3．enough diversity

4．resist that disease

5．the chance of ...

6．merely a dream

二

课堂要点探究

THE RETURN OF THE DINOSAURS? The possibility of cloning fierce and extinct

wild animals has always excited film makers. ③④⑤And they are not the only ones! The popularity

of films such as

Jurassic

Park，

in which ⑥a scientist clones several kinds of

①extinct adj.灭绝的；消亡的

②介词短语of cloning ...作定语，

修饰The possibility。

③popularity/ˌpɒpjʊ'lærətI/n.受

人喜爱；流行

④such as 例如

⑤Jurassic/dʒʊə'ræsIk/Park

《侏

罗纪公园》(美国电影名) extinct dinosaurs, proves how the idea struck a mixture of fear and excitement into people’s hearts. But in fact we are a long way from being able to clone extinct animals. Scientists are still experimenting with

⑦strike/straIk/vt. & vi. (struck, struck)打；撞击；罢工n.罢工

strike ... into one’s heart使……刻骨铭心

⑧该句主干是The popularity of films proves how ...其中in which引导非限制性定语从句，修饰Jurassic

Park。how引导宾语从句，作proves的宾语。

⑨experiment with 用……做实验

1950s cloning of frogs 1970s research using the embryos of mice⑫

1979 work on embryos of sheep and mice 1981 first experimental clones of mice 1983 first experimental clones of cows 1996 first clone of a mammal: Dolly the

sheep⑬

⑨⑧⑦①②

2000 cow gave birth to a bison⑭

2001 China’s first cloned twin calves⑮

2002 first cloned cats 2005 first cloned dog ⑫现在分词短语using the

embryos of mice作定语，

修饰research。

⑬Dolly the sheep 多莉羊

⑭bison/'baIsn/n.北美或欧

洲野牛

⑮calf/kɑːf/n.小牛；牛犊

From time to time⑯

people suggest that extinct animals like dinosaurs, can possibly be brought back to life⑰

through cloning. Unfortunately, with what we know now, this is either impossible or⑱

unsuitable. There are many reasons. ⑯from time to time (相当于sometimes, not very often)不时；偶尔

⑰bring back to life

使复生；使复活

⑱either ... or ... 或者……或者……；要么……要么……(连接并列结构) Read the text carefully and answer the following questions. 1．What's the main idea of the second paragraph? To_explain_the_impossibility_of_cloning_dinosaurs. 2．What's the writer's attitude towards cloning dinosaurs? Negative. 3．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. Step 2 Read the text and choose the best answers. 1．The film JurassicPark is popular because ________. A．people are interested in the subject of cloning fierce and extinct wild animals B．all the actors are dinosaurs C．it was directed by a scientist who cloned dinosaurs D．it proves very interesting 2．Which of the following is TRUE? A．Frogs 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. 3．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 is not enough diversity in the group to overcome the illness C．the illness is a new one D．their arrangement of genes can not resist that new disease 4．It can be inferred from the text that ________. A．scientists are experimenting with cloning 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 years 5．The text mainly tells us about the ________ of cloning extinct animals. A．possibility

C．examples 答案：1～5 ADCBA

B．methods D．importance 记句式

先背熟

1.Did she die

young

because she was a clone？

它死得早是因为它是克隆羊吗？

2.Diversity in a group means having animals with their genes arranged in different ways. 种群多样性是指种群中动物的基因以不同的方式排列。

3.The advantage is that

if there is a new illness some of these 句中that引导表语从animals may die, but others will 句。

survive and pass on the ability with的复合结构在句中作后置定语。

再悟通

形容词young在句中作状语，表示主语的状态。

后仿用

The children rushed to the front, excited. 孩子们激动地跑到了前面。

She sent me an email with_many_pictures_taken_in_America. 昨天，她给我发了一封邮件，里面有很多她在美国拍的照片。

My_suggestion_is_that if it rains tomorrow we had better go to the library. 我的建议是，如果明天下雨，

to resist that disease to the next generation. 其优点是，如果发生了某种新的疾病，这类动物中的一些可能会死去，而另外一些却能存活下来，并且把这种免疫力传给下一代。

1．(教材P13)You owe the lady an apology. 你应该向这位女士道歉。

owe vt.欠(账、钱、人情等)；归功于……；应感谢

(1)owe sb. an apology

该向某人道歉

owe sb. a favour 欠某人一个人情

欠某人某物

我们最好去图书馆。

owe sb.sth.(＝owe sth. to sb.) (2)owe ... to ... owe it to sb. that ... (3)owing to 把……归功于……

……归功于某人

因为，由于

2．(教材P14)However, the problem that she later developed a serious lung disease bothered scientists. 然而，之后它患上了严重肺病的问题困扰着科学家们。

bother (1)vt.打扰

vi.操心

bother sb. with/about sth.

bother to do sth. 因某事打扰或麻烦某人

操心做某事

使某人苦恼的是……

It bothers sb. that/to do sth. 3.strike vt. &

vi. (struck，struck)打；撞击；罢工；打动；迷住；突然想起；袭击；报时n.罢工

形象记忆

写出下列句中strike的含义

①The visitors were struck by the beauty of the West Lake. 迷住

②That area was struck by a snowstorm.袭击

③When the clock strikes six, the children go home for dinner. 报时

④They were on

strike for higher pays. 罢工

⑤As I watched them, an idea struck me. 突然想起

(1)strike ...into one's heart 使……刻骨铭心

be struck by ... 被……打动

sth. strikes sb.

某人突然想起……

It strikes sb. that/wh­ ...(2)be/go on strike 举行罢工

⑥The visitors were struck by the beauty of the tourist area. 游客被旅游区的美景迷住了。

⑦It struck me that there was no one at home. 我突然想起家中没有人。

三

课堂达标验收

Ⅰ单句语法填空

1．They decided to postpone the trip, owing (owe) to the change of the weather. 2．Does it bother you that the man is always asking to lend him money? 3．Working hard, she is bound to_rank (rank) first in the coming exam. 4．It is reported that the scientists have brought a seed of more than 2,000 years back to life recently. 5．Heavy floods struck (strike) the South last week, causing great damage to the local people. 6．The new clothes in that shop are so beautiful that Anna cannot resist taking (take) a close look at them, although she cannot afford them at present. 7．In some experts' opinion, living conditions (condition) on the Mars are very hard to tolerate and the volunteers have to face the freezing cold climate, loneliness and fear. 8．The advantage of using your university accommodation is that you can get support if you have a problem. Ⅱ单元话题微写作

克隆

根据提示,将以下句子连成一篇英语短文。

1.尽管科学家有关克隆的研究取得了成功,人们仍对克隆有不同的看法。(pay off;differ) 2.有人赞同克隆,他们认为他们的宠物一旦死去,自己会非常沮丧,而通过克隆则有可能使它们复活。(in favor of;cast down;be brought back to life) 3.有人反对克隆,他们说多莉羊的离世仍使他们感到恐惧.(object to;strike...into one’s

heart) 4.克隆动物太复杂,是一项很难完成的任务。(complicated;undertake) 5.在我们积累了足够的准确知识前,任何实际操作都是徒劳无功的,注定会失败。(accumulate;exact;in vain;be bound to)

Though scientists’

hard work on cloning research paid off,people’s opinions of cloning differ.Some are in favor of cloning.They think they’ll be cast down once their beloved pets die but they can possibly be brought back to life through cloning.Others,however,object to it.They say the death of cloned Dolly is still striking fear into their hearts.Cloning animals is too complicated and is a difficult task to undertake.Until we accumulate enough exact knowledge,any practice is in vain and is bound to fail.