高二英语下学期unit 2 教案

Unit 2 Cloning

Ｉ． 单元教学目标

技能目标Goals Talk about cloning Practice expressing and supporting an opinion Use the appositive clause Write a composition about cloning Ⅱ.目标语言

Expressing and supporting an opinion I’m happy to accept …. But…. I would never accept…. I’m not bothered about….. I don’t mind but…. I hope you’ll carry on…. 功能句式Are you sure you want to…. I agree with you that…. Is it fair to….? Do you think it is wise to….? I think you should…. Well done to you for…. I don’t understand why you don’t…. I can’t help thinking…. I could never agree to…. 1. 四会词汇 Strawberry，differ，exact，straightforward，breakthrough，disturbing，cast， 词汇altogether，objection，media，moral，ceiling，shortly，retire，assumption，merely，decoration，zebra，aloud 2. 认读词汇 identical，nucleus，gene，somatic，embryo，fate，impact，extinct，popularity，

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Jurassic，bison，calf，DNA，habitat，restore，Auroch，Great Auk，Quagga 3. 词组 cast down，object to，the media，in favour of，（be）bound to（do）…, from time to time, bring back to life, pay off 4． 重点词汇 clone， commercial， producer， undertake， arbitrary，object ，forbid， accumulate bother， regulation， resist， unable， argument ，reasonable， obtain 结构Appositive clause — that 可引导同位语从句 It is a way of….P11 The fact is that….P11 重 The question that occurred is….P12 How differently do people think of….P14 The….is …but…P14 The advantage is that….P15 How would you treat….P54 I don’t mind but….P55 I agree with you that….P55 点句子

III. 教材分析与教材重组

1. 教材分析

本单元以Cloning为话题，旨在通过单元教学，使学生了解克隆技术的优缺点，学会表达和支持个人观点，能用所学的有关Cloning的词汇去表述自己对这一新技术的观点和看法。 1.1 Warming Up 提供了四幅有关Dolly the sheep(多莉羊) A strawberry plant(草莓植物) Twins（双胞胎婴儿） Identical dogs(克隆狗)的图片，让学生用已有的知识和经验讨论对克隆技术的看法与观点。

1.2 Listening是关于人类克隆的听力材料，难度中等。

1.3 Speaking 根据材料，四人小组合作，要求把自己对克隆婴儿的态度和感

觉用相关的语言表达出来。语言要得体，锻炼语段表达能力。

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1.4 Pre-reading是Reading的热身活动。它要求采用与同学讨论交流的方式谈

论有关克隆的相关知识。

1.5 Reading是一篇介绍克隆技术的说明文。

1.6 Comprehending第一题所给出的表格让学生根据课文内容列举克隆技术

的优缺点。第二题让学生根据所拥有的知识来评价作者的观点。第三题要求学生用自己的语言阐述对克隆技术的观点并给出理由。

1.7 Learning about Language 分词汇和语法两部分，其中Discovering useful

words and expressions 是根据语境在运用中掌握词汇。Discovering useful structures 是通过阅读和补全句子来练习。

1.8 Using Language中的Reading，Discussing and writing要求学生先读, 然

后完成四个任务型的作业。即 1. 讨论并回答三个问题。回答这些问题，2. 讨论几种已经灭绝的动物，并且讨论哪种动物应该被恢复到这个世界上，并且给出理由。3. listening and speaking 让学生根据所听到的内容选择并列出文中人物观点。

2. 教材重组

2.1 从话题内容上分析，Warming Up 与Reading相一致；而从训练目的上分

析与TALKING比较一致。从教材份量来说，可将Warming Up和Reading整合在一起，设计成一节任务型“阅读课（一）（精读课）”。

2.2 将Listening 和Workbook中的LISTENING整合在一起，设计成一节 \

听力课\。

2.3 将Using Language 与Workbook中的TALKING和SPEAKING TASK 结

合在一起，设计成一节“口语课”

2.4将Learning about Language 与Workbook中的USING WORDS AND EXPRESSION整合在一起上一节“语法课”。

2.5将Workbook中的READING TASK 和PROJECT以及WRITING TASK整合成一节“泛读与写作课”。

3. 课型设计与课时分配

1st period Reading 2nd period Listening 3rd period Speaking 4th period Grammar

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5th period Extensive reading and writing

Ⅳ. 分课时教案

The First Period Reading

Teaching goals教学目标 1. Target language目标语言 a. 重点词汇和短语

clone，commercial，producer，undertake，arbitrary，object，forbid，accumulate，cast down，object to，the media，in favour of b. 重点句子

It is a way of…. The fact is that….

The question that occurred is…. 2. Ability goals能力目标

Enable the students to describe cloning: What is the advantages of cloning？ What is the problems or dangers of cloning？What is your opinion of cloning？ 3. Learning ability goals 学能目标

Help the students learn how to describe cloning. Teaching important points 教学重点 How to describe cloning.

Teaching difficult point 教学难点

Help the students analyze the writing techniques of the article. Teaching methods 教学方法

Skimming, task-based method and debate method. Teaching aids 教具准备

A recorder, a projector and some slides. Teaching procedures & ways教学过程与方式

Step I Lead-in

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This topic is difficult for students. So teacher should help the students learn more about it. Do this in the way of asking and answering questions.

T: You can imagine how rapidly the modern 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. It sounds very different and complicated to us. In fact, I mean, 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 the same original egg. The fact is that cloning plants is straightforward but the cloning of animals is more complicated. The possibility of human cloning, raised when Scottish scientists at Roslin Institute created the much-celebrated sheep \worldwide interest and concern because of its scientific and ethical implications. You can give your questions if you are interested in this topic. I am here today one of the scientists who work in this field. I am ready to answer any of your questions. S: Now we know what is cloning. Are there different types of cloning?

T: When the media report on cloning in the news, they are usually talking about only one type called reproductive cloning. There are different types of cloning however, and cloning technologies can be used for other purposes besides producing the genetic twin of another organism. A basic understanding of the different types of cloning is

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