2020高考英语一轮复习 Unit 2 Cloning教学案 新人教版选修8

Unit 2 Cloning 单元教案设计The 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. exact… 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 10,000years ago) 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.。

高考英语一轮复习 Unit2 Cloning导学案新人教版选修8 ReadingCLONING: WHERE IS IT LEADING US?Cloning has always been with us and is here to stay. It is a way of making an exact copy of another animal or plant. It happens in plants when gardeners take cuttings from growing plants to make new ones. It also happens in animals 1.________ twins identical in sex and appearance are produced from the same original egg. The fact is that these are both examples of natural clones.Cloning has two major uses. Firstly gardeners use it all the time to produce commercial quantities of plants. Secondly, it is valuable for research on new plant species and for medical research on animals. Cloning plants is straightforward2._______ cloning animals is very complicated. It is a difficult task 3.______________ (undertake). Many attempts to clone mammals failed. But at last the determination and patience of the scientists paid off in 1996 with a breakthrough— the cloning of Dolly the sheep. The procedure works like this:1. Female sheep A provides an egg cell.2. The nucleus is removed from the egg cell.3. The egg cell is ready for a new nucleus.4. Female sheep B provides a somatic cell for the clone. The nucleusof this cell contains all the genes needed to produce a new sheep.5. The nucleus is taken out of the somatic cell.6. The nucleus from sheep B and the egg cell from sheep A are joined using electricity.7. The cell divides and grows into an embryo.8. The embryo is put into female sheep C, who becomes the carrier of the clone.9. The lamb is the clone of the donated cell from Sheep B which provided the nucleus.On the one hand, the whole scientific world followed the progress of the first successful clone, Dolly the sheep. The fact that she seemed to develop normally was very 4._____________ (encourage). Then came the disturbing news 5.__________Dolly had become seriously ill. Cloning scientists were cast down 6._________ (find)that Dolly’s illnesses were more appropriate to a much older animal. Altogether Dolly lived six and a half years, half the 7.________ (long)of the life of the original sheep. 8._________[尽管] her problems, Dolly successfully produced a lamb in a 9.___________ (nature) birth. Sadly the same arbitrary fate affected other species, such as cloned mice. The questions that concerned all scientists were: “Would this be 10._____ major difficulty for all cloned animals? Would it happen forever? Could it be solved if corrections were made in their research procedure?”On the other hand, Dolly’s appearance raised a storm of objections and had a great impact 11._____ the media and public imagination. It became controversial. It suddenly opened everybody’s eyes to the possibility of using cloning to cure serious illnesses, 12._______ even to produce human beings.Although at present human egg cells and embryos needed for cloning research are difficult 13.____________ (obtain), newspapers wrote of evil leaders hoping to clone themselves to attain their ambitions. Religious leaders also raised moral questions. Governments became nervous and more conservative. Some began to reform their legal systems and 14.______________ (forbid) research into human cloning, but other countries like China and the UK, continued to accumulate evidence of the abundant medical aid that cloning could provide. However, scientists still wonder whether cloning will help or harm us and where it is leading us.Using language:THE RETURN OF THE DINOSAURS?The 1.______________ (possible)of cloning fierce and extinct wild animals has always excited film makers. And they are not the only ones! The _2.____________ (popular)of films such as Jurassic Park, in which a scientist clones several kinds of 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 3._____ (be) able to clone extinct animals. Scientists are still experimenting with cloning mammals. This is because the cloning of mammals is still a new science and its story only began seriously in the 1950s as this list shows:1950s cloning of frogs 1970s research using the embryos of mice 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 sheep2000 cow gave birth to a bison 2001 China’s first cloned twin calves 2002 first cloned cats 2005 first cloned dogFrom time to time people suggest that extinct animals like dinosaurs, can possibly 4.____________ （bring） back to life through cloning. 5.______________ (fortunate), with what we know now, this is either impossible ____ unsuitable. There are many reasons.The initial requirement is that you need perfect DNA which gives information for how cells are to grow.All efforts of cloning an animal will be in vain if there is not enough diversity in the group to overcome illnesses. Diversity in a group means having animals with their genes arranged in different ways. The advantage is that if there is a new illness some of these animals may die, others will survive and pass on the ability to resist that disease to the next generation. The great drawback to cloning a group of animals is that they would all have the same arrangement of genes and so might die of the same illness. Then none of them would be left to continue the species.It would be unfair to clone any extinct animals if they were to live in a zoo. A suitable habitat would be needed for them to lead a natural life.6.__________ (base) on what we know now, you cannot clone animals that have been extinctlonger than 10 000 years. Actually, dinosaurs disappeared 65 000 000 years ago. So the chance of dinosaurs ever returning to the earth is 7._________ (mere) a dream.归纳：1.extinct ____________2.initial ____________3. diversity ____________4. resist ____________5. drawback____________6.habitat ____________7.species____________ 8 in vain _________9. pass... on to... ____________ 10. 总结with的复合结构___________________________________重点单词用法1. differ （vi）不同；相异；1) Humans differ from other mammals in their ability to speak.人与其他哺乳动物的不同之处在于人能说话。

Unit 2 Cloning请根据以下内容，使用5个规范的句子说明克隆的利与弊。

优点：克隆可以复制东西——很多人想拥有的同样的一个东西；克隆可以防止世界上的物种消失；克隆可以使我们以旧换新；克隆可以推动我们的技术；克隆也可以使许多没有生育能力的人实现生育梦想。

缺点：克隆可能会与道德发生冲突；克隆将降低原来生命的价值。

参考词汇：复制 copy; 物种消失 the disappearance of living things; 没有生育能力的人 people unable to have children【写作要求】必须使用5个句子介绍全部所给的内容。

In modern times, scientists can copy or clone the things which many people want to own. As we know, cloning has some advantages. It can prevent from the disappearance of living things in the world and enable us to get a new one of the old. Besides, with the cloning technology, people unable to have children can realize their dreams. But cloning has its disadvantages which result in reducing the value of the original one and causing conflicts between morality.1. vi. 不同；相异2. adj. 准确的；精确的3. vt. 着手；从事；承担4. n. 突破5. vt. 扔；投；掷6. vi. 不赞成；反对7. vt. 获得；赢得____________________ ________________________________________________________________________________________________________________________differexactundertakebreakthroughcastobjectobtain8. vt. 禁止；不准9. vt. 积累；聚积10. vt. 欠；归功于……11. vi. 退休；离开12. vt. 打扰 vi. 操心 n. 烦扰13. n. 假定；设想14. v. 打；撞击；罢工 n. 罢工____________________________________________________________ ________________________________________ ____________________ ____________________ forbidaccumulateoweretirebotherassumptionstrike15. adj. 虚荣的；自负的；徒劳的16. vt. 抵抗；对抗17. n. 缺点；不利条件18. adv. 仅；只；不过19. adj. 不能的；不会的20. adj. 合情理的；讲道理的；公道的________________________________________ ________________________________________________________________________________vainresistdrawbackmerelyunablereasonable1. 沮丧；不愉快2. 白费力气；枉费心机3. 赞成；支持4. 一定或注定(做)……5. 使……刻骨铭心6. 不时；偶尔7. 使复生；使复活____________________________________________________________ ____________________ ____________________ ____________________ ____________________cast downin vainin favor of(be) bound to (do)…strike…into one's heartfrom time to timebring back to lifepay offhave an impact onin good/ poor condition8. 偿清；取得成功9. 对……有影响10. 状况很好(坏)；情况很好(坏)____________________________________________________________1.The fact ________ she seemed to develop normally was very encouraging.2.Then came the disturbing news ________ Dolly had become seriously ill.3.Cloning scientists were cast down to find ________ Dolly's illnesses were more appropriate toa much older animal.thatthatthat4.However, scientists still wonder ________ cloning will help or harm us and ________ it is leading us.5.________ (base) on what we know now, you cannot clone animals ________ have been extinct longer than 10,000 years.wherewhetherBasedthat1. differ vi. 不同，相异I differ with the teacher on several matters of opinions.我与老师在几个事情的意见上不一致。

高考英语一轮复习 Unit2《Cloning》知识点学案新人教版选修8 Ⅰ.重要单词聚焦1．differ vi. 不同；相异2．undertake vt. 着手；从事；承担3．Breakthrough n. 突破4．Object vi. 反对；不赞成5．obtain vt. 获得；赢得6．Attain vt. 获得；到达(水平、年龄、状况等)7．forbid vt. 禁止；不准8．Accumulate vt. 积累；聚积9．owe vt. 欠(账、钱、人情等)；归功于……10．shortly adv. 立刻；不久11．retire vi. 退休；离开12．bother vt.& vi. 打扰；操心13．assumption n. 假定；设想14．regulatio n n. 规则；规章；法规15．strike vi.& vt. 打；撞击；罢工16．vain adj. 虚荣的；自负的；徒劳的17．resist vt. 抵抗；对抗18．merely adv. 仅；只；不过19．decoration n. 装饰20．adore vt. 崇拜；爱慕；喜爱21．reasonable adj. 合情理的；讲道理的；公道的Ⅱ.重要短语扫描1．pay off得到好结果；取得成功；偿清2．cast down 沮丧；不愉快3．in favour of 赞成；支持4．(be) bound to (do)．.. 一定或注定(做)……5．strike...into one’s heart 使……刻骨铭心6．from time to time 不时；偶尔7．bring back to life 使复生；使复活8．in vain 白费力气；枉费心机9．in good/poor condition 状况很好(坏)；情况很好(坏)10．have a great impact on 对……有很大影响Ⅲ.课文原句突破1．Then came the disturbing news that Dolly had b ecome seriously ill.Cloning scientists were cast down to find that Dolly’s illnesses were more appropriate to a much older animal.[信息提取] be appropriate to (for) sth.适合于……的；适当的。

Unit 2Cloning1．____________ v i.不同；相异→____________ n．不同；差异→____________ adj.不同的2．____________ adj.精确的；精确的→____________ ad v.精确地；精确地3．____________ adj.简洁的；直接的；坦率的4．____________ n．突破5．____________ n．规章；规章；法规→____________ adj.规章的；有规律的6．____________ v t.扔；投；掷→____________(过去式)→____________(过去分词)7．____________ ad v.总共；完全地8．____________ v i.反对；不赞成→____________ n．不赞成；反对；异议9．____________ n．(pl.)媒介；手段；工具→____________(单数)10．____________ v t.禁止；不准→____________(过去式)→____________(过去分词)11．____________ v t.&v i.积累；聚积12．____________ ad v.马上；不久13．____________ v i.退休；离开→____________n．退休，退职，退役→____________ adj.退休的；退职的14．____________ v t.打搅v i.操劳→____________ n．烦扰15．____________ v t.抵制；对抗→____________ n．抵制力；抵制→____________ adj.有抵制力的；耐……的16．____________ v t.获得；赢得→____________ adj.可获得的；可得到的1．He ____________(不准) them from mentioning the subject again.2．Under the new____________(规章) spending on office equipment will be strictly controlled.3．They tried in ____________(白费劲气) to persuade her to go.4．He is in good health; he is able to ____________(抵制) diseases.5．I ____________(反对) to having to rewrite the article.6．People ____________(崇拜)him for his noble character.7．The way my brother talked to mother ____________(打搅)me.8．We could ____________(从事) the work for the time being.9．The novel took a year to write ____________(总共)，from start to finish.10．You've had a great ____________(突破)to get better understanding of it.1．cast ____________ 懊丧；不快活2．object ____________ 反对3．____________ favour____________ 赞成；支持4．(be)____________ to (do) ...确定或注定(做)……5．____________ time ____________ time不时；间或6．bring ____________ ____________ life 使复生；使复活7．pay____________ 得到好结果；取得成功；偿清8．____________ vain白费劲气；枉费心机9．____________ good/poor condition状况很好/坏；状况很好/坏10．strike ...____________ one's heart使……刻骨铭心Dolly's death, like her birth, ____________ ____________ ____________ ____________ worries. 多莉之死，正如它的出世一样，注定要带来焦虑。

Unit 2Cloning阅读词汇1.twin n. 双胞胎之一;孪生儿之一adj. 成对的;成双的2.straightforward adj. 简单的;直接的;坦率的3.carrier n. 携带者;搬运工;运输工具4.arbitrary adj. 任意的5.fate n. 命运;天命6.medium n.(pl.media)媒介;手段;工具7.the media 大众传播媒体(如电视、报纸等)8.conservative adj. 保守的;守旧的9.constitution n. 宪法;章程pulsory adj. 必须做的;义务的;强迫的;强制的11.opera n. 歌剧;歌剧团;歌剧院12.chorus n. 合唱;合唱队13.loaf n. 一条(面包)14.flour n. 面粉15.claw n. 爪;脚爪16.turkey n. 火鸡17.feather n. 羽毛识记词汇1.differ vi. 不同;相异2.exact adj. 精确的;准确的3.identical adj. 同一的;一模一样的mercial adj. 商业的;贸易的plicated adj. 复杂的;难懂的6.undertake vt. 着手;从事;承担7.breakthrough n. 突破8.procedure n. 程序;步骤;手续句型整理1.The advantage is that if there is a new illness some of these animals may die,but others will survive and pass on the ability to resist that disease to the next generation.其优势是如果发生一种新的疾病,这些动物中的一些可能会死掉,但是另外一些却能存活下来,并将这种抵抗能力传给下一代。

2.The fact that she seemed to develop normally was very encouraging.她看起来是在正常地成长着,这个事实很令人鼓舞。

[单词拼写应用] 核心单词．.总共；完全地．.禁止；不准．.获得；赢得．.欠(账、钱、人情等)；归功于……．.立刻；不久．.打扰 .操心．烦扰． .打；撞击；罢工．罢工．．缺点；不利条件．.着手；从事；承担．．突破．.退休；离开．.抵抗；对抗[语境运用] 用所给词的适当形式填空。

． () ­ ， .．， () ，，，， .．­ ( ) .．， ' () .．， ()， .．() ， .拓展单词． .不同；相异→.不同的→．差异；不同． .使复杂化→.复杂的；难懂的→．复杂． .正确的．改正→．改正；纠正；修正． .反对；不赞成→．不赞成；反对；异议． .积累；聚积→．积累；增加． .假定；设想→．假定；设想． .流行的；通俗的；受欢迎的→．受人喜爱；流行．．装饰；装修→．装饰；装修．．原因；道理→.合情理的；讲道理的；公道的． .精确的；准确的→.精确地；准确地[语境运用] 用所给词的适当形式填空。

． .()．，，， .()．， .()．' .()． ' ．()．．()阅读词汇． .简单的；直接的；坦率的．．双胞胎之一；孪生儿之一.成对的；成双的． .扔；投；掷．．程序；步骤；手续．．媒介；手段；工具． .必须做的；义务的；强迫的；强制的． .崇拜；爱慕；喜爱．．歌剧；歌剧团；歌剧院． .道德(上)的；伦理的． .最初的；开始的． .虚荣的；自负的；徒劳的拓展联想.“动词＋副词”构成的合成名词①缺点②崩溃；故障③告别④反馈⑤­计划；组织⑥­分手；中断.表示“反对；拒绝”的词荟萃① .反对②．反对③ .反对④ .不同意⑤ .拒绝⑥．拒绝形近词集锦① ．抵抗②．坚持③．协助④．助手⑤ .由……组成⑥ .始终如一的熟词生义你知道下面句子中黑体词的汉语意思吗？．(·全国卷Ⅰ) , ­­­ . . 临时庇护处；简易的窝．(·天津卷) . 让人觉得．­ . 承诺；答应[短语多维应用]精讲个考纲单词． .不同；相异()单句语法填空①， .②(·全国卷Ⅰ) ， () .③， () .()[链接写作]——完成句子我坚信如果每个人都努力一点，我们将起重大作用。

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。

2020届一轮复习人教版选修八Unit 2Cloning单元教案I．教学内容分析本单元的中心话题是“克隆”，涉及克隆哺乳动物、克隆的历史和是否能够克隆已经绝种的动物所引起的争议等话题。

Warming Up部分呈现一组图片，引入有关克隆的话题，要求学生回答有关是否能区分自然与人工无性繁殖克隆的问题，激发学生对克隆话题的兴趣，既能集中学生的注意力，又为他们学习本课话题做准备。

因为这部分的问题比较有趣，所以能调动学生讨论的积极性，达到热身的效果。

Pre-reading部分要求学生讨论有关克隆的问题，看学生对克隆有多少了解，对这个话题学生想知道什么并有什么启示。

这样可以激活学生的背景知识和思维，为下面的阅读文章做铺垫，并培养学生的想象力和判断力。

Reading部分介绍了植物与动物克隆之间的区别、多莉羊的诞生与死亡以及由此引发的争论。

通过阅读，在训练学生的阅读方法和技能同时，帮助学生进一步认识克隆的意义在于为人类服务。

Learning about Language部分突出了词汇和语法的学习与训练。

本单元的语法是掌握并运用同位语从句及同位语从句与that引导的定语从句的区别。

Using Language部分中包括了读、讨论和写、听三个部分的内容，通过学习“恐龙回归”的阅读材料，了解是否能克隆已经绝种的动物和讨论哪一种动物是最值得克隆及其理由，然后写成一份报告。

听说部分是听一段关于克隆是否对动物残忍的对话并进行讨论，该部分可以激发学生的想象力和语言运用能力。

Learning Tip教导学生要提高英语口语能力，需要长时间地听英国或美国人朗读的磁带，并大声跟读。

I．教学重点和难点1. 教学重点(1) 本单元的生词和短语；(2) 熟练掌握同位语的用法；(3) 了解什么是克隆、克隆的利弊及对克隆技术的反思；(4) 进一步熟悉和运用有关接受与拒绝、表扬与鼓励、不关心的表达方式。

2. 教学难点(1) 了解克隆技术以及有关的争议；(2) 学会发表评论和表达自己的看法；(3) 学写有关表达观点的文章。

Unit 2 Cloning一、课前基础自查(一)分类记单词——省时高效(二)练中记短语——记牢用活(三)仿写明句式——以用为本二、课堂重点深化1．object vi .反对；不赞成 n ．物体；目标 [自主体验] 单句语法填空①A majority of students objected to being_arranged (arrange) for extra lessons duringholidays and weekends.②As far as I'm concerned, I have an objection (object) to charging for parking.[系统归纳]易错处处防③Sometimes, some students object the idea that English classes are taught in English.object后加to④The villagers raised a objection to building a chemical plant beside the river.第一个a→an佳句时时写⑤(2018·江苏高考书面表达)停止盲目追随排名很有必要，对于排名我们要持客观态度。

It is necessary to stop following ratings blindly and we should hold_an_objective_attitude_towards_it.[名师指津]object表示“反对”时，为不及物动词，加宾语时需加介词to，而oppose表示“反对”时，为及物动词，可直接加宾语。

2．forbid vt.(forbade, forbad; forbidden)禁止；不准[自主体验]单句语法填空①It is high time that we forbade setting (set) off fireworks in urban areas!②You are forbidden to_leave (leave) the room unless you apologize for what you have done.[系统归纳]易错处处防③His own pride forbids to ask Arthur's help.to前加him佳句时时写④我认为禁止商店和超市提供免费的塑料购物袋是必要的。