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1、 Unit 2 Cloning课文学案课题: Unit 2 Cloning (模块8) 学习目标: Learn the text on the 11th page教学重点：Get the main idea and learn the language points (了解文章大意掌握相关知识点)课堂前置 1 准备上个导学案的检查2 阅读课文内容并完成下面Step 2中关于课文理解的练习Teaching Steps ；（教学步骤）Step1 Have a check about the last lesson(检查上节课内容)Step 2 Reading 读课文完成下面的问题Fast read
2、ing 1. The main idea of the text is_ 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 scientists are not
3、 sure about its future.2. What about the writers attitude toward cloning in this passage? A. The writer is against cloning. B. The writer is in favor of cloning. C. The writer is neutral towards cloning. D. The writer is in agreement with cloning.3. It can be inferred from the passage that a cloned
4、animal _. A. usually lives as long as the original one B. usually lives longer than the original one C. usually dies earlier than the original one D. is usually as healthy as the original one4. What is peoples fear about human cloning? Which of the following is wrong? A. Cloned Hitlers would do harm
5、 to the world. B. Cloned people may be killed at will for medical aid. C. A woman would have difficulty recognizing her real husband. D. Men will die out because a woman can give birth to a baby without a husband.5. We can infer from the last three paragraphs that _. A. the normal development of Dol
6、ly had no effect on the cloning of other species. B. Dollys serious disease and final death disturbed the whole 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.Ture or false1.Clo
7、ning means making a copy of an animal or a plant.2.Gardeners can make a lot of money by cloning plants.3.Cloning animals is as complicated as cloning plants. 4. Dolly the sheep was the first successful clone of a mammal5.Natural clones happen in animals as will as in plants.Step 3 Learning the langu
8、age points by yourselves.1 new problems arise 新的问题出现 2 use sth. to do 使用做3 medical research医学研究 4 attempt to do 企图做5 remove from 清除掉 6 take out of 取出拿出7 grow into an embryo 成长为胚胎 8 follow the progress 关注进程 9 be appropriate to/for 适合于适当的 10 open ones eyes 开阔眼界11 have a great impact on the media and p
9、ublic 对媒体和公众有重大影响12 attain ones ambitions 实现野心 13 moral questions 道德问题14 reform the legal systems改革司法制度15 extinct wild animal灭绝的野生动物16 pass on 传递 流传 17 die of the illness 死于疾病18 lead a natural life 过正常的生活 19 a suitable habitat 合适的栖息地20 resist the disease 抗病 21 a somatic cell干细胞Step 4 长难句理解1 This hap
10、pens in plants when gardeners take cuttings from growing plants to make new ones当园艺师从生长的植物上剪下枝条来培养新植物时就会产生这种现象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. 事件；偶然发生的事（常用复数）辨析：happen, occur, take place与come about四词都有“发生”之意，但有区别。 happen 是一般用
11、语，词义较广，强调事情发生的偶然性; occur 用法较正式，既可以指自然发生，也可以指有意安排。take place 一般指有计划，按事先安排的进行的含义。come about 往往注重事情发生的原因，常与how 连用。注：以上四组词均为不及物动词，无被动语态。1) When did the explosion _ ?2) Important elections _ this fall?3) The concert will _ next Sunday.4) How did the quarrel _ 2. The nucleus of this cell contains all the
12、genes needed to produce a new sheep.这个细胞得细胞核含有生产一只新的绵羊的必需的基因。needed to produce a new sheep 为过去分词短语作后置定语，修饰其前面的名词genes, 构成动宾搭配关系。contain v. have or hold within itself 饱含， 里面有contain “包含，含有”，侧重于包含的内容或成分，“里面装有”； include “包括”，侧重范围或整体。Eg:1) Whisky _ a large percentage of alcohol. 2) The book _ forty maps
13、, _ three of Great Britain3. The nucleus from sheep B and the egg cell from sheep A are joined using electricity.从绵羊B中取出得细胞核与从绵羊A中取出得卵细胞用电流使之结合。Using electricity 为现在分词短语作方式状语。join hands联手，携手join in sth. / doing sth参加活动join sb. in sth. 和某人一起做事Step 5 语法探究 翻译句子并分析其句法结构1 The fact is that these are both
14、examples of natural clones.2 The fact that she seemed to develop normally was very encouraging.3 Then came the disturbing news that Dolly had become seriously ill.4 Scientists hold the belief that cloning may lead to many important breakthroughs.5 There is also a debate over the question whether human cloning experiments should be allowed.语法小结：1 这是_从句 2_词不能省略 3 从句用_语序 4常见名词fact, idea, word，promise, saying，problem, news hope 5常见引导词 that, whether, where, how, etc. （1）The facts that he succeeded in the experiment pl
