《英语》（选择性必修·第二册）
Unit 2 Living with technology
Extended reading
I. Learning objectives
By the end of the lesson, students will be able to: 1. grasp the general information of the dialogue; 2. deeply understand some texts of the dialoged; 3. learn and use the core vocabulary; 4. analyse some complex sentences
II. Key competence focus
1. Get Ss to review some strategies learnt in lessons 1 & 2. 2. Learn how to find the references.
III. Predicted area of difficulty 1. Find the references.
2. Analyse the complex sentences.
IV. Teaching procedures T greets the class.
T: Class begins, boys and girls! Good morning/afternoon! Step 1 Reading
1. Reading for the structure of the text
T Revise the techniques learnt in Lesson 2 to conclude a paragraph.
T: There two ways to boil a paragraph down. One is “brief”, using as few words as possible; another is “descriptive”, offering important information. T: Now try the “brief” to conclude the text. Title Definition Function Barriers Future Answer: Title Definition Function Virtual reality Reality that is not real. Surrounding you with virtual three-D images, sounds and other sensory information. Time, cost and technical limitations. 1
Virtual reality Application Application Education; medicine; entertainment shopping and travelling. Barriers
Future Endless possibilities T: Now turn to page 54. Let’s come to AP54 and try the “descriptive” way to conclude the text. Items What is VR Applications Barriers Future Answers: Items What is VR Description VR (virtual reality) means “reality that is not real”. How it works Description VR (virtual reality) means “reality that is not real”. How it works Wearing a VR headset equipped with sensors and a screen, you’re surrounded by three-D images, sounds and other sensory information, which creates a super-realistic effect called “presence”. Though you know the sensory information surrounding you is not real, part of your brain believes it is — and acts accordingly. Applications Barriers Future VR is widely used in education, medicine, entertainment, shopping and travelling. The barriers include time, cost and technical Limitations. There are endless possibilities.
2. Reading for extended information B P54
T: What other applications of VR do you know about? Answer:
Virtual reality in the courtroom: Lawyers usually use photos to try to explain the mechanics of a crime or an accident to a jury. It is challenging to show the judge and jury what actually happened at a crime scene or at the precise moment of impact during a serious accident. With VR, lawyers are now able to transport them directly into the scene of the crime or accident.
Virtual reality in sport: Athletes use this technology to fine-tune certain aspects of their performance and VR is also used in the design of sporting clothes and equipment, such as running shoes. Virtual reality has been used to improve the audience’s experience of a sporting event too, like walking through a stadium, or even taking part in a game or an event. …
【设计意图：本单元一个阅读策略是“理解文章结构”，此步承接第一课，复习这一策略并运用这一策略来理解本文结构。】
Step 2 Building Core vocabulary 1. practical Definitions a. concerned with practice and action rather than theory b. suitable for the purpose for which it was
Vocabulary web practise→ practice→ practical→practically practicable 2
made; useful T: Match the underlined words with their right definitions. 1) Your invention is interesting, but not very practical. 2) It's an interesting idea in theory but there are many practical difficulties in reality. 3) Can you give some examples of the practical applications VR has? (Line 10 P53) Answers: 1) b 2) a 3) b 2. engage Definitions Vocabulary web a. arrange to employ sb; hire sb engage→ engaged→ engagement b. begin fighting with be engaged in c. occupy or attract (sb's thoughts, time, etc) d. (of parts of a machine, etc) lock or fit together e. (cause sb to) take part in or be occupied in sth f. have agreed to marry T: Match the underlined words with their right definitions.
1) The two cog-wheels (齿轮) engaged and the machine started. 2) Nothing engages his attention longer than reading novels. 3) I have no time to engage in gossip. 4) Mary was engaged to be married to Joseph, a carpenter who was two years older. 5) Our school has engaged a foreign teacher as a spoken English teacher. 6) The two armies were fiercely engaged for several hours. 7) By delivering the content in a meaningful way, this new approach to learning manages to engage students’ interest and enhance learning efficiency. (Line16-18 P53) Answers: 1) d 2) c 3) e 4) f 5) a 6) b 7) c 3. twin Definitions a. n. either of a pair of children or young animals born of the same mother at the same time b. n. either of a pair of similar, usually matching, things c. adj. used to describe two things that happen at the same time and are related to each other d. v. form a relationship between two places, people, or ideas T: Match the underlined words with their right definitions. 1) Oxford in Britain is twinned with Bonn in Germany. 2) The twins were separated at birth and brought up in entirely different environments. 3) The plate was one of a pair, but I broke its twin. 4) Would you prefer twin beds or a double bed? 5) What if I told you that doctors could create a virtual “twin” in order to practise a delicate surgery before attempting it on the patient? (Lines 25-27 P53) Answers: 1) d 2) a 3) c 4) b 5) b 4. clone
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Definitions a. n. group of plants or organisms produced asexually from one ancestor b. someone or something that looks and behaves exactly the same as someone or something else c. v. to produce an animal or plant as a clone T: Match the underlined words with their right definitions. 1) They were the first to clone a sheep from adult cells. 2) Tom was in some ways a younger clone of his handsome father. 3) Although two clones are identical genetically, they may develop in different ways. 4) In shopping, you can look forward to being able to have your own virtual reality clone try on clothes and to see products with 360° views. (Lines 37-39 P54) Answers: 1) c 2) b 3) a 4) b
【设计意图：本单元的阅读另一个重点阅读策略是“根据上下文猜词释义”，此步设计承接第二课，将核心词汇训练与阅读策略有机结合起来。最后一句来自课文。】
Step 3 Find out reference
T: To understand the precise meaning of a reading material, we have to dig out the reference of a noun or a pronoun. Here are some sentences from the text. Let’s explore what the underlined nouns or pronouns refer to.
1. It really boils down to three things —— time, cost, and technical limitation. We will need time to develop and fine-tune the hardware and software. The initial cost will discourage most people in the beginning but that should be fixed over time. (Lines 45-46 P54) T: What does “The initial cost” refer to?
Answer: Time, cost and technical limitation. T: What does “that” refer to? Answer: the initial cost.
2. Fox example, 5G technology, with its potential to serve up more stable mobile connectivity at faster speed, will make it possible for people to enjoy a more immersive VR experience wherever they are. (Lines 54-57 P54) T: What do the three underlined parts refer to?
Answers: The word “its” refers to “(of) 5G technology”. The word “it” is formal object, referring to the actual object “to enjoy a more immersive VR experience”. The word “they” refers to “people”. 【设计意图：指代关系是阅读难点之一，准确理解名词和代词的指代是顺利理解上下文的前提。本文中多处出现复杂的指代，需要借助文理、语法才能准确理解】
Step 4 Analyse the complex sentences
T: There’re some complex sentences in the text. To get accuracy of the meaning, you have to analyse their components.
T helps Ss to find out some complex sentences and ask some of them to analyse their components. 1. When you wear a VR headset equipped with cameras and sensors, you are surrounded by 3-D images, sounds and other sensory information, which creates a super-realistic effect called “presence”. (Lines 5-8 P53) Answers
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1. The main body of the sentence is “…you are surrounded…”. The conjunction “When” guides time adverbial clause. The part “equipped with cameras and sensors” modifies “headset”. The conjunction “which” guides attributive clause, modifying the main idea of the former part of the sentence.
2. What if I told you that doctors could create a virtual “twin” in order to practise a delicate surgery before attempting it on the patient? (Lines 25-27 P53)
2. The main body of this sentence is an ellipsis. Its full sentence is “What would you feel if I told…”. This sentence uses a subjunctive mood contrary to the present fact. The conjunction “if” guides virtual conditional sentence, in which the secondary main body is “I told you…”. The conjunction “that” guide an object clause，in which the secondary main body is “doctors could create a…twin”, with the part “in order to practise a delicate surgery” as adverbial of purpose and the part “before attempting it on the patient” as adverbial of time modifying verb “practise”. 3. They’re well equipped to become part of a technological generation that will develop and use VR to do things we might think of as impossible today. (Line 59-61 P54)
3. They main body of the sentence is “They’re well equipped”. The word “equipped” is an adjective transformed from a past participle. The part “to become part of a technological generation” is adverbial. The conjunction “that” guides attributive clause. The part “we might think of as impossible today” guides the attributive clause, modifying antecedent “things”. 【设计意图：高中重要语法项目已学习完毕，借助语法分析有助于学生更准确地理解句子意思，实际上本册课本已出现不少长而复杂的句子，帮助学生进行长句分析很有必要】
V. Homework
1. Revise the core vocabulary.
2. Watch the micro lesson: Tips to interview an expert. (Optional)
3. Read the text again and discuss the question “What future development do you think VR will have? CP54”
(Ss will answer the question next period.)
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