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1、Unit 2 CloningPeriod3 Language points and learning about languageTeaching aims:1. Learn expressions and phrases.2. Learn language points.Teaching important points:Language pointsTeaching methods:Presentation and practiceTeaching aids:A blackboard, chalk and a computerTeaching procedures:Step 1 Revis
2、ion Retell the passageStep 2 Language points 1. It is a way of making an exact copy of another animal and plant.exact adj.精确的, 准确的, 原样的, 精密的What were his exact words?I dont know the exact size of the room.exactly adv.正确地, 严密地,恰恰Thats exactly what I expected.Youve arrived at exactly the right moment.
3、exactly speaking准确地说2. It also happens in animals when twins identical in sex and appearance are produced from the same original egg.这种现象也发生在动物身上，从同一个原生卵子产生性别和相貌相同的双胞胎也是克隆。(1)It 指代上文的cloning(2)happen vi. occur by chance; take place (偶然地）发生；出现 happen to do happen to sb. It happened that happening n.
4、事件；偶然发生的事(常用复数)(3) identical in sex and appearance 是一个形容词短语作后置定语,修饰twins identical adj.(常与with连用)完全相同的，用identical 翻译如下句子这两种样式几乎完全相同。These two designs are almost identical.我的意见和他的相同。My opinion is identical with his.我们双方对应当怎么办的看法是一致的。We are identical in our views of what should be done.这是我们去年住过的那家旅馆。T
5、his is the identical hotel that we stayed in last year.3. Firstly, gardeners use it all the time to produce commercial quantities of plants. 第一，园艺师一直用它生产大量的供商用的植物。commercial adj. 商业的, 贸易的a commercial loan /law /activity商业贷款/法规/活动商务的He is taking a commercial course at the local college.他在本地学院学商业课程。4.
6、 The whole scientific world followed the progress of the first successful clone, Dolly, the sheep.整个科学界都在关注着首例成功的克隆动物多莉羊的成长。follow to have a great interest in something or watch something closely:倾听; 注视; 注意(情况的发展等) The Presidents wife follows his every word. 总统夫人总是注意听他说的话。5. Cloning scientists were
7、cast down to find that Dollys illness were more appropriate to a much older animal.研究克隆的科学家们沮丧地发现多莉得的病更容易发生在年老的羊身上。1) cast down：feeling unhappy and depressed使沮丧, 低沉be cast down = feel discouraged He is not easily cast down. 很少见他情绪低落. 2) be appropriate to: be suitable for a particular person, conditi
8、on, occasion or place; fitting 适合于的，与相称的Write in a style appropriate to your subject.用与你的题目相称的体裁写。Ordinary shoes are not appropriate to paddy fields.普通鞋不适于下稻田。6. On the other hand , Dollys appearance raised a storm of objections and had a great impact on the media and public imagination. 另一方面，多莉的出生引
9、起了一阵强烈的反对，对媒体和公众的想象力也产生了巨大的影响。(1)raise 在此是“唤起、引起、使出现”之意。=bring aboutHis absence raised fears about his safety.他的缺席引起人们对他安全的担心。The use of animals in scientific tests raises some difficult ethical questions.用动物作科学试验引起了一些棘手的道德问题。A funny remark raises a laugh.滑稽的话惹人发笑。（2) a storm of:常指感情猛烈爆发或强烈表现sudden
10、violent outbrust or display of strong feeling a storm of protest 一阵猛烈的抗议a storm of bullets /arrows一阵弹雨/箭雨a storm of applause /cheers一阵暴风雨般的掌声/暴风雨般的欢呼声a storm of abuse /criticism一阵辱骂/评击（3）have/make a strong/ great impact on.对.有（或产生）巨大影响翻译：The anti-smoking campaign has had quite an impact on young peo
11、ple.这场反对吸烟的运动对年轻人有极大的影响。This book made a great impact on its readers.这本书对读者产生了巨大的影响。7.Governments became nervous and more conservative.各国政府恐慌不安, 对克隆更加保守。conservative 保守的 His conservative views made him unpopular. 他保守的观点使他不受欢迎。 This is a conservative estimate of the population in the year 2000. 这是对公元
12、二年时人口的保守估计。 The Conservative Party is now in power. 现在由保守党执政。 8. Some began to reform their legal systems and forbade research into human cloning.一些政府开始改革他们的法律制度，命令禁止进行克隆人类的研究。forbid 禁止, 不许 做（某事）或用（某物）forbid 后面可以接三种搭配名词，代词或动名词作宾语sth./ doing sth./sb. doing sth.不定式的复合结构作宾语sb. to do sth.双宾语sb. sth.9. s
13、ome countries such as China and the UK， continued to accumulate evidence of the abundant medical aid that cloning could provide. 但其他国家，如中国和英国，则仍然在继续收集克隆技术有可能提供丰富的医疗救助的证据。1) accumulate vt. /vi. : to gather or pile有收集、堆集、积累的意思（=to gather or pile) ,强调经过一段比较长的时间由少及多的积累，使用范围较广，似乎凡是在数量方面的增长都可以表示。它既可作为及物动词
14、也可作为不及物动词The company has accumulated great wealth within a few years.2) evidence 意思为证据、根据，是不可数名词。(= a thing or things helpful in forming a conclusion or judgment) Is there any evidence for/of his guilt?有什么证据证明他犯罪了？The broken window was evidence that a burglary had taken place.Step3Discovering useful words and expressionsPart1:Complete the sentences.Part2 :Replace the underlined parts with words that have the same meaning.Rewrite the sentence when necessary.Part3：Complete the passage using the correctforms of the words below.Step4 HomeworkReview the language points.资
