2020年高中英语 Unit 4 Welcome to the unit and reading I教案 牛津译林版选择性必修第二册.doc

1、Unit 4 Living with technologyWelcome to the unit & Reading (I)I. Learning objectivesBy the end of the lesson, students will be able to:1. grasp the topic and the general idea of the lesson;2. understand some important details;3. form their own opinions based on the text.II. Key competence focus1. Le

2、arn how to apply reading strategies to reading tasks.2. Learn how to get a deep understanding of the reading material.III. Predicted area of difficultyUse specific example to express ones own idea.IV. Teaching proceduresStep 1 Welcome to the Unit Brainstorming: stimulating reading interest1. T greet

3、s the class.T: Class begins, boys and girls! Good morning/afternoon!T: Open your book at page 43. Lets have a look at the picture on this page. What do you see on it?T: Yes. A handsome young man is enjoying VR and a robot is standing on the beach. Now lets go through Bill Gates words under the topic

4、 “Living with technology”. It reads “The advance of technology is based on making it fit in so that you dont really even notice it, so its part of everyday life.” What does it mean?T: Right. What Gates says is about the relationship between technology and life. He emphasizes that technology sneaks i

5、nto our lives and brings us benefits. T: Now. You have known something about the topic of the unit: How technology is woven into our life.2. T Now watch a video carefully and fill in the blanks. T: Watch the video again and answer the three questions on page 43. Answer 1 the moon, computersAnswers 2

6、 1. In the popular science fiction TV series, Star Trek, the people in the future use a device called a “communicator”, which looks similar to the cell phones of today. 2. Yes, I agree with Jules Vernes statement. Looking around today, many things that people in the past believed could never happen

7、have become a part of our daily lives. No, I dont agree with Jules Vernes statement because even though humans may feel capable of achieving the impossible, there are some dreams that are beyond our capabilities. 3. In the future, I think our hands will be implanted with sensors to become scanners t

8、hemselves. Using our hands as scanners would make it more convenient to identify ourselves and pay for items. Our hands could even be used to exchange digital business cards or any other information through a handshake. Sophisticated scanners with sensors created for professionals, such as a doctors

9、 hand, would mean a patient could be diagnosed in an easier way.【设计意图：由43页上的图片、Bill Gates的话以及译林所提供的短视频让学生对本单元主题有个概念，并引发学生的对本单元学习的兴趣。】Step 2 A1 Reading for the structure of the text T: Would you please have a glimpse of the pictures on pages 44 and 45? T: What do you know about artificial intelligenc

10、e? How is the author likely to organize the information on artificial intelligence?(No fixed answers available. Any imaginative answers will be acceptable.)T: Please read through the whole text and complete the chart on P46, using full sentences to conclude each paragraph.Answer: Para. 2: AI is a br

11、anch of computer science that aims to create intelligent machines imitating the complex networks of human brain.Para. 3: AI has developed over a long time and had some major breakthroughs.Para. 4: AI is being applied in various fields, transforming the way we live.Para. 5: The development of AI has

12、also caused concerns and fears.Para. 6: We need to make sure that we will not fall victim to AI.T: Have you got another way to conclude each paragraph? I have got a more concise way to express them. Lets complete the following chart with some phrases to conclude each paragraph. Para. 1 Introduction

13、to AIPara. 2 _Para. 5 _Para. 4 _Para. 3 _Para. 6 _Answers: Para. 2. Concept Para. 3. Origin and development Para. 4. Application Para. 5. Concern Para. 6. Conclusion【设计意图：通过完成练习A1帮助学生整体把握课文结构，培养学生快速阅读以获取主干信息的能力，也为掌握本单元的学习策略（理解说明文的文章结构）埋下伏笔。此处用了两种总结方式，第一种是完整句子，总结细致一点。第二种是短语，总结更为抽象、概括。】Step 3 A2 Readi

14、ng for the detailed informationT: Now you have got the general idea of the text. Please go through the questions in A2. 1. What is deep-learning AI capable of doing?Answers:1. By learning from the results of its previous actions.2. What events were considered as major breakthroughs in AI?2. Deep Blu

15、e beat the world chess champion Garry Kasparove in 1997, and AlphaGo defeated Ke Jie, arguably the best human Go player, in 2017. 3. What are ordinary people using AI to do?3. To get instant translations of text in foreign languages.4. What are we getting closer to according to the author?4. We are

16、getting closer to the dividing line between humans and machines.【设计意图：通过A2练习促使学生再次深入课文，此项活动旨在帮助学生获取文章重要的细节信息，培养关注重要细节的习惯。】Step 4 A3 Reading for InferenceT: We have read through the whole text and varieties of ideas may appear in our mind. Certainly there are some arguments, some of which have been l

17、isted in A3. 1. What is the authors attitude to artificial intelligence? 1. Answers: The author is not only excited but also cautious about AI. He uses the example of having a robot do all the work and says “How cool that would be!” He also explains how AI could benefit us by listing various applica

18、tions of AI, such as health care and machine translation. However, while looking forward to its potentials, he is clearly concerned about the possible dangers of AI. He asks a series of questions about the future of AI and quotes Stephen Hawking to show the potential dangers. In the conclusion the a

19、uthor also warns, “We need to make sure that we will not fall victim to AI”2. In lines 44-46, Stephen Hawking is quoted as saying, “The development of full artificial intelligence could spell the end of the human race.” Do you agree with him? Why or why not?2. No. I dont agree with Stephen Hawking.

20、I think that scientists fully understand the concerns about AI, and they will surely be careful about developing it. Even if we are able to create true artificial intelligence, we will know how to control it. According to the Three Laws of Robotics, put forward by science fiction author Issa Asimov,

21、 robots may not injure human beings or allow them to be harmed, they must obey the orders given by human beings except where such orders conflict with the First Law, and they must protect their own existence if that does not conflict with the First or Second Law. Yes. I agree with Stephen Hawking. W

22、ith the development of full artificial intelligence, machines may become so intelligent that human beings could no longer control them. If super-intelligent that human beings could think and act completely on their own, it remains to be seen how they would treat human beings. It would be extremely d

23、angerous if they decide that humans are their enemies. So I think we need to be very careful with full artificial intelligence, and it is important that we consider possible dangers before it is too late. 3. What do you think intelligent machines will be capable of doing in the future?3. Intelligent

24、 machines will certainly have a lot of influence on our lives in the future. For example, we might all have an AI machine in our homes which can tell us whether we have a medical problem and if we need to go to hospital. It might even take the place of the human doctor and treat us at home or in hos

25、pital. I think an AI machine will look after our homes for us: it will be able to tell when we are running low on food or cleaning products and order them for us based on what we usually get. It might also be able to read our digital calendars and order things like plane tickets and taxis based on w

26、here we need to go.【设计意图：通过几个问题的讨论帮助学生走出课文，形成自己的观点和看法。此项活动也有助于学生灵活运用语言来表达思想。】V. Homework1. Watch the micro lesson: Structure of an expository essay. (Optional)2. Write a summary of the text.Answer:AI is created to develop intelligent machines, which can imitate the complex work of human brain. Fortu

27、nately enough, with some major breakthroughs over a long times research, it is being applied in various fields and is transforming the way we live. However, with the increasing development of AI, it has also aroused concerns and fears for us humans to fall victim to it. So . So its necessary for us to be careful about it.