人教新课标高中英语选修8第二单元 Book 8 Unit 2 Cloning 学案含答案

人教新课标高中英语选修8第二单元Book8Unit2Cloning学案含答案-精选教学文档Unit 2 Cloning （Book 8）Period 1 Reading Cloning: Where is it leading us?Class：Name：__________ Group：No：______ Learning Objectives:1. Learn the useful new words and expressions.2. Read the passage and learn some information about cloning.Learning Key Points:1. Grasp the important words and expressions in the reading material.2. Learn the text and master the major uses of cloning and the success and problem of cloning Dolly the sheep.Learning Difficult Points:1.Help Ss improve the s tudents’ reading ability.2. Ss learn the reading skills: scanning and skimming.Assessment: Learning Procedures:I.【Pre-class homework】Scan the text and choose the best answer.1. The main idea of the text is _____________.A. animal cloning is very valuable and can benefit the worldB. animal cloning could be misused by bad people so it must be forbiddenC. animal cloning is well developed because Dolly the sheep was bornD. animal cloning raised arguments and scientists are not sure about its future2. Which of the following statements about cloning is NOTtrue according to the text?A. Cloning is something that has been developed quite recently.B. Twains 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.3. The lamb is the clone of the cell from sheep B because ______________.A. it provides the egg cellB. it gives birth to the lambC. it provides the nucleusD. it is a female sheep4. Which of the following is NOT a problem or danger of cloning mentioned in the text?A. Evil leaders may want to clone themselves.B. Animal clones may develop the illness of older animals and may die younger than thedonor animals.C. There are moral objections to cloning human beings.D. Too much cloning may lead to the destruction of the balance of nature.5. Which of the following is NOT an advantage of cloning ?A. Cloning can be used for medical purposes.B. Large quantities of food can be produced by cloning.C. Famous persons who have passed away can be cloned.D. Cloning can help keep animals from becoming extinct.6. We can infer from the last three paragraphs that _____________.A. The normal development of Dolly had no effect on thecloning of other species.B. Dolly’s serious disease and final death disturbed everyone in the world.C. Dolly successfully cloned a new lamb with the help of cloning scientists.D. There were arguments about animal cloning and concerns about the future of cloning.7. What is the writer’s attitude toward cloning in the passage?A. The writer is against cloning.B. The writer is in favour of cloning.C. The writer does not state any personal opinion about cloning .D. The writer is in agreement with cloning .II.【While-class】Assessment: Step1. Lead-inStep2. Group discussionStep3. ConsolidationRead the text carefully and answer the following questions.1. How many major uses does cloning have?_____________________________________________________________2. What is used in the procedure for cloning Dolly the sheep?________________________________________________3. What can we infer from the last paragraph?4. Find out the main idea of each paragraph:Para.1:_________________________________________________________ __ Para.2:___________________________________________________________ Para.3:___________________________________________________________ Para.4:___________________________________________________________ Para.5:___________________________________________________________ 5.Read the text again and fill in the blanks.Cloning is a way of making an 1._____________ (exactly) copy of another animal or plant. It has two major uses .2. ____________, gardeners use it to earn profits. Secondly, it is valuable for research on new plant species and 3.____________ medical research on animals. Although cloning mammals is difficult 4.___________ (undertake), the determination and patience of the scientists 5.____________ (pay) off in 2019. The fact 6.___________ she seemed to develop normally was very 7._______________(encourage). But she had half of the 8.________________ (long) of the original sheep,9.____________ aro se scientists’concern. Up to now, cloning is still10. _________________ (controversy).Keys:【Pre-class homework】1.D2.A3.C4.D5.C6.D7.CStep3. Consolidation1. It has two major uses. Firstly, gardeners use it all the time to produce commercialquantities of plants. Secondly, it is valuable for research on new plant species and for medical research on animals.2. The nucleus of sheep B.3. Some governments will permit research into human cloning with aim of medical aid.4. Para.1: The definition of cloningPara.2: The two major uses of cloningPara.3: The problems of Dolly the sheepPara.4：The attitudes towards Dolly’s appearancePara 5: The effect of cloning in society5. Fill in the blanks1.exact2. Firstly,3. For4. to undertake. 5, paid 6,that 7. encouraging 8. length9, which 10, controversialUnit 2 Cloning （Book 8）Period 2 Language points in Reading 1Class：Name：__________ Group：No：______ Learning Objectives:1. Learn and grasp the important useful new words and expressions.2. Learn the important useful sentences and patterns.3. Make sentences after the useful expressions.Learning Key Points:Grasp the usages of such important new words and expressions.Learning Difficult Points:Understand some difficult and long sentences.Learning Procedures:Assessment: Ⅰ.【Pre-class homework】A. Phrases:1. 与……不同11. 对……产生影响2．一项难以承担的任务12. 媒体3．得到回报13. 变得有争议的4．一方面……另一方面……14. 打开眼界5. 令人感到不安的消息15. 邪恶头目6．沮丧，不愉快16. 道德问题7. 适合于17. 变得谨慎的8. 无法控制的命运18. 收集证据9. 改进19. 赞成10. 一阵强烈的反对20. 反对B. Make sentences.1. differ________________________________________________________________ ___________ 2. object________________________________________________________________ ___________ 3. pay off________________________________________________________________ ___________ 4. bother5. vain________________________________________________________________ ___________ 6. obtain________________________________________________________________ ___________ 7. cast down________________________________________________________________ ___________ 8. be bound to …________________________________________________________________ ___________ Ⅱ.【While-class】Assessment: Step1. Lead-inStep2. Group discussionStep3．ConsolidationSentences1. Cloning plants is straightforward while cloning animals is very complicated.翻译：(1) 中译英：中国人喜欢红色，而西方人则偏爱白色。

Unit 2 CtoningThe First Period Warming up and Reading Teaching goals1.Enable the students to describe cloning: What is theadvantages of cloning?2.Help the students analyze the writing techniques of thearticle.Teaching procedures Step I Warming up一：You can imagine how rapidly the modem science and technology develop. I think most of you must know something about space traveling, submarine exploration, robot, maglev train, gene engineering etc. But in recent years, a hot topic, cloning is often mentioned, especially when the cloning Dolly the sheep appeared. You may have first heard of cloning when Dolly the Sheep showed up on the scene in 1997. Cloning technologies have been around for much longer than Dolly, though.First things first, what is cloning and a clone? The dictionary says cloning is the technique of producing a genetically identical duplicate of an organism. A clone is said to be all descendants derived asexually from a single individual, as by cuttings, bulbs, by fission, by mitosis, or by parthenogenesis reproduction. In fact, in our daily life, this happens often. For example, gardeners take cuttings from growing plants to make new ones. You often see that your mother picks a small branch from a growing plant to make a new one. If she likes this kind of flowers, she can do cloning. Cloning also happens in animals or human beings when twins identical in sex and appearance are produced from thesame original egg.Discussion 1. Do you want to be cloned or not? Why?2.Can you tell me the advantages of cloning?3.And what is the disadvantage?二:Look at picturesLook at the pictures and discuss which ones are natural clones and which ones are man 一made. Then explain how they differ.Step II Pre-reading(Before class, ask the students to search for some information about this topic. ) Now show your questions on the screen, and then let them discuss with each other.Now please work in pairs and discuss about cloning. Then list the questions you want to find out. Share your list with your partner.Questions about cloning:1.What is a clone?2.How is a clone produced?3.What benefits can humans gain from cloning?4.What problems may arise when humans are cloned?5.Should we clone human?6.Could cloning replace sex as the means of creating new human life?7.Could a parent clone a child who is dying of a terminal illness?Suggested answers:1.It is a way of making an exact copy of another animal and plant.2.This happens in plants when gardeners take cuttings from growing plants to make new ones, and when small parts of a plant are taken and gown in a laboratory. Italso happens in animals when twins identical in sex and appearance are produced from the same original egg.3.It can help cure disease and can help couples who have no baby to bear a new baby.4.There may be more bad people like Hitler.5.In my opinion, I do not agree, for it may cause many moral problems.6.No. Because cloned human has the same quality as the real human, natural born baby's quality is higher than his parents.7.No. The cloned baby also has the disease.Step III Fast- readingHave you not the answers of your questions? Now please skim the passage fast to obtain a general understanding of the whole passage into several parts and find out the main idea of each part.Show the following.Para. 1 Cloning is a way of making an exact copy of another animal and plant.Para. 2 Cloning has two major uses.Para. 3 The problems of Dolly.Para. 4 The effect of Dolly.Para. 5 It is forbidden to clone human being.Step IV Careful-reading1.Ask the students to read the passage carefully to finish exercise Ion page 12 in the students, book.2.Check the answers.3.Finish exercise2on page 12 in the students' book.4.Check the answers5.Explanationl.)It is a way of making an exact copy of another animal and plant.全句汉语意思:它是一种精确复制另一个动物或植物的方式。

人教版高中英语选修8《Unit 2 Cloning》教案人教版高中英语选修8《Unit 2 Cloning》教案【一】教学准备教学目标一、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 reportOne student comes to the front and gives a report about advantages and disadvantages of science and technology.Step 2 leading-inThe teacher shows some pictures and starts a discussion about cloning.Step 3 SkimmingTask 1: Whats the main idea of the passage? Task 2: Match the main idea with each paragraph Para 1: A. Peoples 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 ScanningTask 1. Look through Para 2 and answer the following questions.(1) What are 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, Dollys appearance raised a storm of objections and had a great impact on the media and public imagination.(2). The word controversial in paragraph 4 probably means_________.A. complicatedB. arguableC. importantD. valuableTask4. Do the following Tor F questions based on Paragraph 5.1. People feared some evil leaders might use cloning to reach their goal.2. All the research into cloning will be forbidden.3. Religious leaders are in favor of human cloning.Step 5 Enjoy beautiful sentences1. 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 that she seemed to develop normally was very encouraging.Step 6 Question and answerThis 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 QuizNote: This part is very challenging. In the picture there are five numbers. Students can choose their lucky number and answer questions. Most of the questions are based on what they have learned in class.Step 8. Test yourselfFill 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 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 hand, Dollys 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 DebateTopic: Are you for or against cloning?课后小结HomeworkWrite a passage entitled My view on cloning.课后习题评测练习主要有两个。

Unit 2 CloningThe First Period warming upAims1. Talk about cloning2. Practice expressing and supporting an opinionContentsTask one: Looking and speakingIn pairs, look at the pictures and discuss which ones are natural clones and which ones are man-made. Explain how they differ.A.Dolly the sheepB. A strawberry plantC.TwinsD. Identical dogsTask two: Questions about cloningWhat is a clone?How is a clone produced?What benefits can humans gain from cloning?What problems may arise when humans are cloned?Task three: Free talkIn pairs, discuss what you understand about cloning, then list the questions you want to find out. Share your lists with one another.1. Should we clone human?2. Could cloning replace sex as the means of creating new human life?3. Could a parent clone a child who is dying of a terminal illness?The Second Period ReadingAims:1. Help the Ss to know how to describe cloning and how to catch the details of the text.2. Activate the Ss to show their opinions about the cloning and enable the Ss to write and article on this debate.Contents:Leading in by revision.Task one: Fast readingWhat is a clone?Show the following.1. Cloning means making a copy of an animal or a plant. (F. e xact… another)2. Gardeners can make a lot of money by cloning plants.(T.)3. Cloning animals is as complicated as cloning plants.(F. more than)4. Dolly the sheep was the first successful clone of a mammal. (T.)5. Natural clones happen in animals as well as in plants.(T)Task two: Careful readingRead the text again, try to answer the following questions and find out the main idea of each paragraph .Questions:1. What’s the main idea of the text?2. How many years did the sheep that donated the somatic cell most probably live?3. Why did the Cloning of Dolly the sheep succeed?4. What does the word ‘straightforward’ mean in the second paragraph?5. What is the writer’s attitude toward cloning in this passage?The main idea of each paragraph:Para. 1 Cloning is a way of making an copy of another animal and plant.Para. 2 Cloning has two major uses.Para. 3 The problems of Dolly.Para. 4 The effect of Dolly.Para. 5 It is forbidden to clone human being.Task three: Notes for debating: Should we use cloning?Argument for cloning:Cloning will be beneficial to humansWe could use cloning to cure illnesses.Arguments against cloning:healthy risks form mutation of genesemotional risksagainst naturerisk of abuse of the technologyCloned animals get ill and die quite young;The Third Period Language PointsAims:1. Enable the Ss to grasp the words of cloning.Get the Ss to master some useful expressions.Contents:1. differ v.1) “To be dissimilar or unlike in nature, quality, amount, or form”eg：Ambition differs from greed.2) “To be of a different opinion; disagree”eg：The critic differed with the author on several facts.2. exact adj. “Strictly and completely in accord with fact; not deviating from truth or reality”eg：an exact account; an exact replica; your exact words.3. commercial adj. 1) “Of or relating to commerce” 2) “Engaged in commerce’eg：a commercial loan; a commercial attaché; a commercial trucker.4. straightforward adj. 1) “honest’ 2) “easy to understand”eg: a ~ explanation; written in ~ language; a ~ problem in algebra5. procedure n.1) ‘A manner of proceeding; a way of performing or effecting something’eg：complained to the manager, and by this procedure got the money back.2) “A series of steps taken to accomplish an end”6. undertake v.1) “To take upon oneself; decide or agree to do”eg：undertake a task.2) “To pledge or commit (oneself) to’eg：undertake oneself to care for an elderly relative.7. breakthrough n.1) “An act of overcoming or penetrating an obstacle or restriction.”2) ‘A military offensive that penetrates an enemy's lines of defense’eg: a ~ in cancer research8. disturb v. “break the quiet, calm and peace’eg: She opened the door quietly so as not to disturb the sleeping boy.Don’t ~ the papers on my desk.9. arbitrary adj.1) “Determined by chance, whim, or impulse, and not by necessity, reason”eg：stopped at the first motel we passed, an arbitrary choice; arbitrary division of the group into halves.2) “Based on or subject to individual judgment or preference”eg：The diet imposes overall calorie limits, but daily menus are arbitrary.10. altogether adv.1) “Entirely; completely; utterly”eg：lost the TV picture altogether; an altogether new approach.2) “With all included or counted; all told”eg：There were altogether 20 people at the dinner.11. objection n. “The act of objecting”eg: He has a strong ~ to getting up early.~s to the plan will be listened to sympathetically.12. media n. 媒体eg: The running for president drew the ~’s attention.Now the press is an useful media.13. moral adj.1)“Of or concerned with the judgment of the goodness or badness”eg：moral scrutiny; a moral quandary.2) “Teaching or exhibiting goodness or correctness of character”eg：a moral lesson.14. accumulate v. “To gather or pile up”eg: By buying ten books every month, he soon ~d a library.Dust soon ~s if the room is not swept.15. forbid v.1) “To command (someone) not to do something”eg：I forbid you to go.2) “To command against the doing or use of (something); prohibit”eg：forbid smoking on trains.The Forth period Learning about language and Using languageAims:Let the Ss know more about the cloning.Improve the students’ listening, reading and writing ability.Contents:Task one: gap fillingplete the sentences using suitable words or phrases from the prevision sections.2.Rewrite the sentences using words of similar meaning to replace the underlined words.e the words and phrases below to fill in the passage.Task two: reading and discussing1.Read the passage and answer the questions.2.In pairs, discuss which extinct animals described below (which died out less than 10,000 yearsago) are worth restoring by means of cloning.a. Auroch (1627)b. Dodo bird (1755)c. Great auk (1844)d. Quagga (1883)Task three: listening and writing1.Read the statements before listening. Tick those that you hear.2.Listen to the tape again and then work with a partner to fill in the chart on page 17.3.Whose idea do you agree with according to the listening materials? Get ready to write acomposition. Think about the reasons for your point of view. Use your own ideas as well as those in the text.。