选修八unit2教案

选修八unit2 Cloning教案 词汇

I. Teaching Aims:

Knowledge goals: 1. Learn some new words according to the knowledge of the word formation. Ability goals 2. Enable the Ss to pronounce the new words and expressions correctly. Emotion Goals : 3.Arouse Ss’ interest in studying English . II. Teaching Important & Difficult Points:

Learn some new words according to the knowledge of the word formation. III. Teaching methods

Listening; practicing; discussing IV. Teaching Aids

The multimedia and other normal teaching tools 重点词汇

Differ exact twin commercial straightforward undertake breakthrough procedure carrier cast altogether arbitrary correction object objection medium obtain attain moral conservative forbid accumulate constitution compulsory opera

重点词组

cast down, object to, the media, in favour of， （be）bound to（do）..., from time to time, bring back to life, pay off, in vain Ⅰ.联想记忆

1．differ vi.不同→differ_______..._______..在……方面与众不同

2．pay________得到好结果；取得成功→pay_______偿还→pay _______付……的钱 3. reasonable adj.合情理的；公道的 ----- n.／v.----______ 4．cast______沮丧；不愉快

5．object vi.反对；不赞成→object _____反对

6．forbid vt.禁止→_____禁止；取缔→forbid _____ _____.禁止某人某物→forbid _____ ______ _______________禁止某人做某事

7．owe vt.欠(钱、人情等)→owe sth. _____...欠……；归功于……→_____ ______因为，由于 8．bring back to life使复生→_____ _______ ______变得活跃起来 9．resist vt.抵抗；对抗→resist__________抗病

10．_____ ______ / condition状况很好/坏→in a good/poor state状况很好/不好

1.from,in 2.off ,back, for 3.reason 4.down 5.to 6.ban;sb.sth;sb from doing sth 7.to,owing to 8.come to life 9.diseases 10.in good/bad Ⅱ.构词记忆

1．differ vi.不同；相异→_________adj.不同的→_________ n．不同；差别 2．commerce n．商业→_________ adj.商业的 3．object vi.反对→_________ n．不赞成；反对 4．retire vi.退休→_________ n．退休

5．assume vt.假定；设想→_________ n．假定；设想

1. different, difference 2. commercial 3. objection 4. retirement 5. Assumption Ⅲ.高频短语

1．________________ 得到好结果；取得成功；偿清2．________________ 沮丧；不愉快 3．________________ 反对 4．________________ 赞成；支持 5．________________ 把……归功于…… 6．________________ 一定或注定(做)…… 7．________________ 使……刻骨铭心 8．________________ 不时；偶尔 9．________________ 使复生；使复活 10．________________ 白费力气；

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11．________________ 状况很好/坏；情况很好/坏 1．pay off 2.cast down 3.object to 4.in favour of 5.owe...to... 6.(be)bound to (do)．.. 7.strike...into one’s heart 8.from time to time 9.bring back to life 10.in vain 11.in good/poor condition

牛刀小试： Ⅰ.单词填空

1．The chemicals that are harmful to the environment are ____________(禁止)here. 2．Christmas____________(装饰品)now have started to sell well in our shop. 3．She fell heavily，____________(撞)her head against the side of the boat.

4．She ____________(喜爱，爱慕)her grandchildren and is always buying them presents. 5．Before rules and____________(规则)were introduced，the sport was very dangerous.

6．It’s not ____________(仅)a matter of cost，but whether she’s old enough to go on holiday alone. 7．I am sure she has the ability to____________(承担)all kinds of housework.

8．I thought the price of the car was quite____________(合理的)，so I decided to buy it. 9．用object 的适当形式填空

(1)Grey decided to move to the countryside and his wife made no ____________ to it.

(2)Some members of the committee ____________to my proposal，which made me disappointed. 10．用assume的适当形式填空

(1)We are working on the ____________that the conference will take place as planned. (2)____________that his story is true，what should we do?

1.forbidden 2.decorations 3.striking 4.adores 5.regulations 6.merely 7.undertake 8.reasonable 9.(1)objections (2)objected 10.(1)assumption (2)Assuming

Ⅱ.短语填空

1．Don’t be_____ _______ (沮丧)．Your effort will _____ _______ (回报) in time and you’ll obtain what you want.

2．He seems to be _____ _______ _____ (状况很好), but he can’t resist a flu and he falls ill _____ ______ _________ _______不时地)．

3．I _____ _______反对) being forbidden from the computer games but _____ _______ (徒劳的) because all the family members were _____ _______ _____ (支持) it.

1. cast_down; pay_off 2. in_good_condition; from_time_to_time3. objected_to; in_vain; in_favor_of Reading1

Teaching goals教学目标 1. Target language 目标语言 a. 重点词汇和短语

clone, commercial, producer, undertake, arbitrary, object, forbid, accumulate, cast down, object to, the media, in favour of b. 重点句子 It is a way of... The fact is that...

The question that occurred ... 2. Ability goals能力目标

Enable the students to describe cloning: What is the advantages of cloning？ What is the problems or

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dangers of cloning？What is your opinion of cloning？ 3. Learning ability goals 学能目标

Help the students learn how to describe cloning. Teaching important points 教学重点 How to describe cloning. Teaching difficult points 教学难点

Help the students analyze the writing techniques of the article. Teaching methods 教学方法

Skimming, task-based method and debate method. Teaching aids 教具准备

A recorder, a projector and some slides. Teaching procedures && ways教学过程与方式 Step1.Getting Ready

Ⅰ. Can you find anything from the picture below?

_______________________________________________________________ Ⅱ. Do you know why they look alike?

________________________________________________________________________________________________________________________________________________________________________ Ⅲ. Do you know about Dolly the sheep?

____________________________________________________________________________________ ____________________________________________________________________________________ Ⅰ. The two dogs are alike Ⅱ. They are examples of cloning. Ⅲ. Dolly was the first mammal to have been successful cloned sheep. Step2.Fast reading

Ⅰ. What’s the main idea of the text?

A. Animal cloning is very valuable and can benefit the world.

B. Animal cloning could be misused by bad people so it must be forbidden. C. Animal cloning is well developed because Dolly the sheep was born.

D. Animal cloning raised arguments and scientist are not sure about its future. Ⅱ. Match the main idea of each paragraph.

Para.1 A. The major uses and procedures of cloning Para.2 B. The definition of cloning Para.3 C. People’s reaction to cloning Para.4 D. The problems of Dolly

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Para.5 E. The effect of Dolly

Para.1 _________Para.2________ Para.3 ________Para.4________ Para.5________ Ⅰ.D. Ⅱ.BADEC

Step3. Careful Reading

Ⅰ. Choose the best answer according to the passage.

1. Which of the following statements about cloning is NOT true according to the text? A. Cloning is something that has been developed quite recently.

B. Twins that look exactly the same are originally from the same egg. C. Cloning is used by gardeners to make more money.

D. Animal cloning is much more difficult than plant cloning.

2. The procedure of the cloning of Dolly the sheep is concerned about_________sheep. A.1 B.2 C.3 D.4

3.The sheep that donated the somatic cell most probably lived________years. A.3 B.6 C.9 D.12

4.The lamb is the clone of the cell from sheep because_________. A. it provides the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a female sheep

5.What about the writer’s attitude towards cloning in this passage? A. The writer is against cloning. B. The writer is in favor of cloning.

C. The writer does not state any personal opinion about cloning. D. The writer is in agreement about cloning. ACDCC

Ⅱ. Fill in the chart Disadvantages of cloning Advantages of cloning 1. Animal clones may ____________________ 1. Use it to produce __________________ of of older animals. plants 2. Animal clones may __________ than the donor animals. 3. ______leaders may want to clone themselves 2. Cloning plants can be valuable for research on ______________ 3. Cloning can be valuable for________________ 4. Religious leaders raised 4. Cloning can help save_____________________ Disadvantages of cloning:1. develop the illnesses 2. lived shorter3. __Evil___leaders4. moral questions Advantages of cloning:1. commercial quantities2. new plant species3. medical research on animals 4. endangered animals Step4. Summary.

Cloning is a way of _______ an exact copy of another animal or plant. Cloning has two ______ uses. Firstly, gardeners use it to produce plants. Secondly, it is ________ for medical research on animals. Cloning plants is straightforward but the cloning of animals is more________. The procedure is difficult to _______. In 1996, scientists succeeded in ______Dolly the sheep. Then came the disturbing news that Dolly was ill. ________ Dolly lived for six years and a half , Dolly’s appearance raised a storm of

________. Government became nervous and many _________ research into human cloning. Scientists still 4