Using LanguageⅡ教学实录

Teaching Unit: Module 8 Unit 2 Cloning

Type of lesson: Using Language II Teaching time: 45 minutes Teaching aims: 1.

To review and grasp the key words and phrases in the context 2.

To know some arguments about cloning 3.

To express one’s opinion about cloning and give the reasons 4.

To train listening and speaking skills

Teaching contents: Key Words: differ

exact

commercial

undertake

altogether object

obtain

attain

forbid

twin owe shortly bother resist

merely

reasonable

breakthrough

procedure

conservative

identical

opera

chorus Key Phrases: pay off

cast down

in favor of

be bound to do

strike....into one’s heart

in vain bring...back to life

in good / poor condition

raise moral questions

from time to time Teaching aids: SCT, a Computer, EnglighBook8

Teaching procedures: Step 1 Lead-in

Imitate and Recite A sentence. 在此环节，使用班级电脑安装的APP欧路词典的每日一句功能，通过慢速跟读和正常跟读，训练学生朗诵能力，养成积累美句名言的习惯。

Step 2 A Vocabulary Game: Parts of Speech Game-Story Blanks.

On The Loose

written by Jane On the news last night, there was a(n) unreasonable story about a(n) dinosaurs on the loose. Apparently the dinosaurs had escaped from Jurassic Park and roamed the city shouting at scared children and conservative adults. Then, as terrified city-goers fled, the dinosaurs climbed an opera and took a nap! As it slept, a(n) conductor snuck up on it and captured it with a chorus. People objected as the dinosaurs was put in a cage and taken shortly back to Jurassic Park. Some people might have thought it was cool to see a real-live dinosaurs up-close. I am OK with just seeing it on the news!

在此环节用了一个词汇游戏网站里的STORY BLANK 的游戏，把本单元的新词汇通过网站自动生成故事进行复习, 并引出侏罗纪公园和克隆恐龙，让学生再次回忆起这个颇有争议的话题。

Step 3 Reading: Want to copy a puppy? If you’ve ever had a dog, you know just how deep a connection you can develop with “man’s best friend”. But a dog has a much shorter life span–

about 12 to 15 years long –

than humans, which means every dog owner has to go through the heartbreaking moment when their loving pet passes away.

Why not make a clone of that dog then? This is the solution offered by a South Korean company, Sooam Biotech Research Foundation. The company has successfully cloned at least 400 dogs, mostly for US customers, ever since it pioneered the technique in 2005. Now, Sooam

Biotech is planning to introduce their business to UK dog owners, offering them dogs that look just like their lost ones.

Meanwhile, another dog is selected to supply an egg. Researchers then replace the DNA in the egg with that from the skin cell and implant the egg into the womb of a female dog. The egg grows into a puppy over the following two months. To clone a dog, researchers first need to take a skin cell from a living dog or one that has just died. The whole process takes less than a day, but it comes at a shockingly high price – around £63,000 (614,000 yuan). But if you can’t afford it now, you can also save the cells in a laboratory and access them at a later date.

Just like identical twins of humans, they share the exact same DNA but there will still be small differences between them. “The spots on a Dalmatian clone will be different, for example,” Insung Hwang, head of Sooam Biotech, told The Guardian. However, as magical as cloning might sound, there is no guarantee that the cloned dog will be a perfect replica of the original one.

Dog owners will also have to accept the fact that personality is not “clone-able”. Apart from genes, personality is also determined by upbringing and environment, which are both “random elements [that] cloning technologies simply cannot overcome”, Professor Tom

Kirkwood at Newcastle University, UK, told The Telegraph. Perhaps bringing our dogs back with cloning is not the best way to remember them after all. Kirkwood, a dog owner himself, pointed out: “An important aspect of our relationship with them is coming to terms with the pain of letting go.”

1.

According to the article, Sooam Biotech Research Foundation is offering a service that will ____. A. help dog owners love their dogs more

B. help dogs give birth to more puppies C. make copies of pet dogs

D. give pet dogs an “identical” twin

2. Which of the following statements about dog cloning is TRUE according to the article? A. Dog cloning technology hadn’t been put into practice until recently.

B. Dog cloning is very expensive and usually takes several months to complete.

C. Dog cloning is very popular among US and UK pet owners.

D. Cloned dogs might develop different habits and characteristics even if they look very similar. 3. Which of the following shows the correct order of the dog cloning process?

a.

an egg is taken from another dog b.

a skin cell is taken from the pet dog and saved in a laboratory

c.

the egg is placed in the womb of a female dog d.

the DNA of the egg is replaced by the DNA from the skin cell

e.

the egg grows into a puppy in two months A. acbde

B. adbce

C. bacde

D. badce 4.We can learn from the article that Kirkwood ______ dog cloning. A.

disapproves of

B. supports

C. is afraid of

D. is curious about 此环节引入21世纪报的“英语读行侠”APP里的一篇Want to Copy a Puppy阅读训练,让学生了解克隆在现实生活中已出现的用途和克隆步骤,及不同的人们对克隆宠物的不同看法.这个APP里的鼠标取词翻译,点击发音,回看文章,放大缩小等功能,能极大节省了切换课件的繁琐和屏幕限制问题.

Step 4 Opinions on Cloning 用本单元所学词汇完成下列句子，并按照逻辑连成短文。

1．人们在克隆技术上分歧相当大。

2．一些人支持它的发展。

3．他们认为这项技术一定会有利于我们。

4．还有一些人发现克隆引起一系列的道德问题,应该立法禁止克隆人类的研究。

5．只要所有的人都答应合理应用，克隆将会取得成功。

Keys:

People differ greatly in cloning technique. Some people are in favor of its development, for they believe it will be bound to benefit us. On the contrary, others find that it could raise a storm of moral questions. In addition, laws should be made to forbid doing research into human cloning. However, in my opinion, cloning will pay off on assumption that all undertake to use it properly. 关于克隆的“opinions ”的翻译，这个环节既是对之前阅读课内容的归纳深化，也是对接下来的听力和讨论做铺垫，更是为本单元的议论文写作积累素材。使用手机QQ的作业功能，让学生翻译后拍照上传提交作业，可以当堂检查，也可以课后浏览。

Step 5 Listening

Is cloning cruel? Listen and see whether you agree with Xiao Qing or Rachel. Task1 Read these statements before listening. Tick those that you hear. 1

Cloning will bring dead pets to life. 2

There were 627 experiments before Dolly was successfully cloned. 3

Cloning may help cure serious illnesses. 4

It is a dead end。

5

Dolly the sheep was “middle-aged” when she was born. 6

So your grandmother would be able to start her life all over again and live much longer.

Task 2 Listen to the tape again and work with a partner to fill in the chart.

Rachel’s ideas about cloning

1.

to animals Xiao Qing’s ideas about cloning

1.Scientists are doing a

job 2.

makes them do

things

3.it is a “

”

4. clone born at age of “

”

5.

the species 2.

may bring back

animals to life 3. problems because it is a

science 4. scientists need

5. it may provide

for illnesses

通过二人对克隆的讨论，学生了解更多关于克隆这个有争议性得话题，学会从不同的角度看待问题和如何表达自己的观点。使用多媒体播放音频，和SCT的标注功能。

Step 6 Discussion--Whose ideas do you agree with? Get ready to have a class discussion. Think about the reasons for your point of view. Use your own ideas as well as those in the text. These words and phrases on page 18 may be useful for you during the discussion：

That’s a good idea.

How can you believe that?

That’s a great idea!

I cannot accept your argument because…

I support… because…

No, I can’t agree with… because…

I agree with…because….

I would like to agree with you but…

Your argument has convinced me because…

I don’t care for your ideas because…

Your ideas sound very encouraging to me.

No, that is not reasonable because….

Step 7 Homework : write a passage about My Opinions of Cloning

Listening text IS CLONING CRUEL? Xiao Qing and Rachel Brown are discussing whether cloning is cruel to the animals.

RB: Xiao Qing, do you think cloning is cruel? XQ: What do you mean by that? The scientists are doing a wonderful job and soon they may be able to bring back extinct animals or ever people’s favorite pets back to life. RB: Yes, Qing, I know. But doesn’t that seem strange to you? Is it worth it? It took 276 experiments before Dolly was successfully cloned. Think of all those live cells and eggs that died in order for Dolly to be born. I don’t approve of that!

XQ: But Mary, be reasonable. Isn’t it always like that with a new science? This is the way you learn to do things better. It’s just that this one deals with living things. RB: I suppose so — but they make the animals do unnatural things. One poor cow was made to give birth to a bison. What was the poor creature to think when is saw its baby? XQ: I don’t quite understand why so many people are against cloning. I think the scientists need a little encouragement. They have done some amazing things and think of the benefits. Producing animals that are an exact copy of the original may help medical science produce medicines or even organs for serious illnesses. RB: Yes, I’ve heard all that. I agree with it but I don’t agree with the methods. I don’t think cloning is good for animals. XQ: Why not? RB: Well, I think it’s a dead end. Dolly the sheep was “middle-aged” when she was born because her DNA came from a middle-aged “mother”. Cloning your grandmother would mean the new baby started life as an old lady. XQ: Are you sure? I never thought of that! RB: And it also weakens the species. Clones mean there is less variety in the species and so illnesses will become more common and the animals may die out. XQ: Oh dear! And that was just what you and I were trying to avoid. I see I shall have to look at this whole cloning questing again!