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人教版高中英语选修8《Unit 2 Cloning》教案.docx

1、人教版高中英语选修8Unit 2 Cloning教案人教版高中英语选修8Unit 2 Cloning教案一、 语言知识目标 初步理解、掌握课文中关于克隆的词汇,学习分析课文中的长难句子。 二、 阅读技能目标 1. 能获取和处理文章中的主要信息。 2. 能够掌握文中出现的重要的语言知识 三、 学习策略目标 掌握速读、略读、猜测词义等阅读策略。 四、 情感态度目标 让学生认识到克隆的利和弊。 五、 文化意识目标 了解克隆,正确地利用克隆技术来为人类服务。 教学重难点 初步理解、掌握课文中关于克隆的词汇,学习分析课文中的长难句子。 教学过程 Step 1 Daily report One stude

2、nt comes to the front and gives a report about advantages and disadvantages of science and technology. Step 2 leading-in The teacher shows some pictures and starts a discussion about cloning. Step 3 Skimming Task 1: What s the main idea of the passage? Task 2: Match the main idea with each paragraph

3、 Para 1: A. People s attitude towards cloning. Para 2: B. The problems of Dolly. Para 3: C. The impact of Dolly. Para 4: D. Two major uses and the procedure of cloning. Para 5: E. The definition(定义)of cloning. Step 4 Scanning Task 1. Look through Para 2 and answer the following questions. (1) What a

4、re the two major uses of cloning? (2) Which one is easier, to make plant clones or animal clones? Task 2. Look through Para 3 and fill in the chart. Task 3. Do the following translation and word guessing. (1). Translation: On the other hand, Dolly s appearance raised a storm of objections and had a

5、great impact on the media and public imagination. (2). The word controversial in paragraph 4 probably means_. A. complicated B. arguable C. important D. valuable Task4. Do the following Tor F questions based on Paragraph 5. 1. People feared some evil leaders might use cloning to reach their goal. 2.

6、 All the research into cloning will be forbidden. 3. Religious leaders are in favor of human cloning. Step 5 Enjoy beautiful sentences 1. Cloning plants is straightforward while cloning animals is very complicated. 2. At last the determination and patience of the scientists paid off. 3. The fact tha

7、t she seemed to develop normally was very encouraging. Step 6 Question and answer This part is for students to find if they still have questions. If there is any, they can ask their classmates to help them. Step 7 Quiz Note: This part is very challenging. In the picture there are five numbers. Stude

8、nts can choose their lucky number and answer questions. Most of the questions are based on what they have learned in class. Step 8. Test yourself Fill in the blank with proper words. Cloning is a way of _ (make) an exact copy of another animal or plant. It has two major uses. One is _ gardeners use

9、it to produce plants. The _ is that it is valuable for medical research on animals. _, the process of cloning is difficult _ (undertake). The first successful clone, Dolly the sheep, made the whole _ (science) world follow its progress, though it had _ problems than the normal sheep. On the other ha

10、nd, Dolly s appearance _ (raise) a storm of objections and had a great impact _ the media and public imagination. Different people have different opinions on it. However, scientists still wonder _ cloning will help or harm us and where it is leading us. Step 9 Debate Topic: Are you for or against cl

11、oning? 课后小结 Homework Write a passage entitled My view on cloning. 课后习题 评测练习主要有两个。 一是quiz 环节: 主要有5个问题: 1. Listen to a part of an English song and try to learn from it. 2. Please use pay off to make a sentence. 3.Give us some detailed information about Dolly. 4. Translate the following sentence into E

12、nglish. 另一方面,多利羊的出现引起了一阵强烈的反对,对媒体和公众的想象力也产生了极大的影响。 5. What is your attitude towards cloning? Give your reason. 二是test yourself 环节: Fill in the blank with proper words. Cloning is a way of _ (make) an exact copy of another animal or plant. It has two major uses. One is _ gardeners use it to produce p

13、lants. The _ is that it is valuable for medical research on animals. _, the process of cloning is difficult _ (undertake). The first successful clone, Dolly the sheep, made the whole _ (science) world follow its progress, though it had _ problems than the normal sheep. On the other hand, Dolly s app

14、earance _ (raise) a storm of objections and had a great impact _ the media and public imagination. Different people have different opinions on it. However, scientists still wonder _ cloning will help or harm us and where it is leading us. 从同学们的答题效果来看,学生们回答问题的积极性很高,准确率在98%以上。 人教版高中英语选修8Unit 2 Cloning

15、教案【二】 核心单词 1. differ v. 不同;相异;使 相异 常用结构: A differs from B in .A与B在 方面不同 A differs with B about/on/over. A与B就 意见相左 Their house differs from mine in having no garage. 他们的房子与我的不同,区别在于他们的没有车库。 The two sides still differ with each other over the question of pay.双方在报酬的问题上仍各持己见。 联想拓展 difference n. 不同之处 dif

16、ferent adj. 不同的 make a difference to 对 产生变化;对什么有 影响 different from 与 不同,不同于高手过 招 高手过招 用适当的介词填空 (原创) The two squares differ colour but not size. The husband differs the wife who is to take charge of the money. It doesnt make a difference me whether you are going to stay. This is a different car the o

17、ne I drove yesterday. 答案:1. in; in with; on/about/over to from 2. undertake vt.(undertook;undertaken)着手;从事;承担;保证,答应 常用结构: undertake sth. 着手/从事/承担某事 undertake to do sth. 保证/答应做某事 undertake that .保证 The scientist undertakes the experiment. 这位科学家从事这项实验。 I can undertake the responsibility for the change

18、s. 我愿意承担这些变革的责任。 The lawyer undertook a new case. 那个律师接了一个新的案子。 He undertook to finish the job by Friday. 他答应星期五之前完成这项工作。 高手过招 翻译句子 (原创) 他下个月要去西部旅行。 He will undertake a journey to the west next month. 我不能保证按时做完它。 I cant undertake that Ill finish it on time. 3. objection n. 不赞成;反对;异议 常用结构: have an ob

19、jection to . 反对 raise/voice an objection 提出异议 联想拓展 object v. 反对,不赞成 n. 物体;目标 object to sb./sth. 不赞成某人/某事 object to doing sth. 反对做某事 object that . 反对 No one objected to the plan.没有人反对这项计划。 We object to being treated like this. 我们反对受到这样的待遇。 Why do some people object to human cloning? 为什么一些人反对克隆人类呢? Mo

20、ther objected that Jimmy was too weak to take up the job. 母亲反对说,吉米身体太虚弱,不能承担那份工作。 The building is the main object of his interest. 他最感兴趣的是这栋建筑物。 高手过招 单项填空 We to punishing a whole group for one persons fault. (2010 01 江西南昌检测) Complain B. object C. oppose D. resist 解析:选B。句意为:我们反对因为一个人的错误而惩罚整体。object t

21、o doing sth.反对做某事。 4. obtain vt. 获得;赢得 易混辨析 obtain/acquire/gain/earn/achieve obtain意为 获得,买到 。指通过努力或请求而得到,含有满足要求或得达到目的的意味,用于正式语体中。 acquire意为 经过努力逐步获得才能、知识、习惯等,也可用于表示对财物等的获得 ,强调 一经获得就会长期持有 的含义。 gain意为 通过较大努力获得某种利益或好处;亦可指军事上的武力夺取等 。 earn意为 挣得,赢得 ,指因工作等而得到报酬或待遇。 achieve意为 得到;获得 ,多指成就、目标、幸福的取得。 He failed

22、 to obtain a scholarship. 他没有获得奖学金。 I finally managed to obtain a copy of the report. 我终于设法弄到了这个报告的副本。 We should try to acquire good habits. 我们应该努力养成好习惯。 He found it easy to earn extra money. 他发现赚点额外收入很容易。 But we can only achieve it together. 然而,只有共同奋斗才能实现它。 高手过招 翻译句子 (原创) The journalist immediately

23、 set out to obtain these important facts. 那位新闻记者立即着手获取这些重要的事实。 Knowledge can be obtained through study. 知识可通过学习获得。 5. forbid vt. (forbade/forbad; forbidden) 禁止;不准;阻止;妨碍 常用结构: forbid sth./doing sth. 禁止,不许(做某事) forbid sb. to do sth. 禁止某人做某事 The law forbids the use of chemical fertilizers. 法律禁止使用化学肥料。

24、I forbid you to tell anyone. 我不准你告诉任何人。 高手过招 翻译句子 (原创) 飞机上禁止吸烟。 Smoking is forbidden on the plane. 他爸爸不准他和她交谈。 His father forbade him to talk to her. 要禁止小孩不玩电脑游戏很难。 It is hard to forbid children to play computer games. 6. owe vt. 欠(账、钱、人情等);应该把 归功于 感激,感恩 常用结构: owe sb. sth. = owe sth. to sb. 欠(某人)债 o

25、we sth. to sb./sth.将某事物归因或归功于某人/事 He owes his father 50. = He owes 50 to his father. 他欠他父亲50英镑。 We owe this discovery to Newton. 我们把这一发现归功于牛顿。 高手过招 用适当的介词填空 (原创) How much do I owe you the groceries? He owes his success more luck than ability. I owe a lot my wife and children. 答案:forto; to to 7. resi

26、st vt.抵抗;对抗 常用结构: resist sth. 抵制;阻挡某事 resist doing sth. 反对做某事 cant resist doing sth. 忍不住做某事 The nation was unable to resist the invasion. 该国无力抵抗侵略。 A healthy body resists disease. 健康的身体能抵御疾病。 I could hardly resist laughing. 我忍不住笑了。 resistance n. 抵抗,反抗;抵抗力 resistant adj. 抵抗的;有抵抗力的 be resistant to sb.

27、/sth.对某人/某事有抵抗力 resister n. 抵制者;抗拒者;电阻器 高手过招 翻译句子 (原创) He resisted being carried off. 他阻挡别人把他带走。 She can not resist the temptation of chocolate. 她无法抗拒巧克力的诱惑 。 重点短语 8. pay off 得到好结果,取得成功(常用主动语态);偿清债款;付清工资解雇;(对 进行)报复;收买(某人) At last, his hard work paid off. 最后,他的努力得到了回报。 Did your plan pay off? 你的计划成功了吗

28、? 联想拓展 pay for付 为 而付出代价 pay back sth./pay sb. back sth. 偿还某物/偿还某人某物 pay sb. .for sth. 因某事而付给某人 pay sb. .to do sth. 付给某人 去做某事 pay sb. back for sth. 向 报复 高手过招 (1)单项填空 If you go for a long ride in a friends car, its the custom to offer to some of the expenses. (2010 01 江苏启东检测) A. pay B. pay off C. pay

29、for D. pay back (2)用pay的相关短语填空(原创) After ten years of hard working she finally her debt. Our efforts are sure to . Have you the milkman this week? Have you the money the bank yet? I will you next week. 答案:(1)解析:选C。根据句意可知,这里表示 为 偿付一部分费用 ,故选C。pay for 为 而付钱;为 付出代价。 (2) paid offpay offpaidpaid; topay; b

30、ack 9. in favour of 赞成;支持;有利于;主张 I am in favour of stopping work now. 我赞成现在停止工作。 in sb.s favour 对某人有利 do sb. a favour /do a favour for sb. 帮某人忙 do sb. the favour to do sth./do sb. a favour by doing sth.帮助某人做某事 favour vt. 赞同;支持 The child favours his father with his brown eyes. 这个孩子棕色的眼睛像他的父亲。 温馨提示 表示 支持,赞同某人/某事 除了用in favour of之外;还可以用:be for sb./sth.; stand on ones side等。 be against sb./sth.表示 不支持,不赞同某人/某事 。 高手过招 (1)单项填空 I dont like to ask people for help as a rule but I wonder if you could me a favour. (2010 01 江苏启东检测) A. make B. do C. find D. get (2)用方框内所给短

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