北师大版必修二Unit4CyberspaceLesson3Virtual Reality课件

1、高一北师大版模块二,Unit 4 Cyberspace Lesson 3 Virtual Reality,What is Virtual Reality?,虚拟现实,就是说本来没有的事物和环境,通过各种电脑技术虚拟出来,让人感觉到就如真实的一样。,The use of computers to make situations feel and look real.,虚拟现实技术就是人们利用计算机生成一个逼真的三维虚拟环境，通过自然技能使用传感设备与之相互作用的新技术。它将模拟环境、视景系统和仿真系统合三为一，并利用头盔显示器、图形眼镜、数据服、立体声耳机、数据手套及脚踏板等传感装置, 把操作者

2、与计算机生成的三维虚拟环境连结在一起。操作者通过传感器装置与虚拟环境交互作用，可获得视觉、听觉、触觉等多种感知，并按照自己的意愿去改变“不随心”的虚拟环境。如虚拟博物馆是用计算机虚拟技术重现展示古代或现代物品及当时的真实场景。整个场景以三维和交互式探索形式重现。由于虚拟物展品和场景全部存在于计算机中，物体的3D模型可以无限期展示，没有被毁坏、被偷窃的危险。,What do you know about virtual reality technology?,Have you ever played virtual reality computer games?,Have you ever pl

3、ayed virtual reality computer games?,Have you ever played virtual reality computer games?,headsets and special gloves and suits equipped with sensors,the user can directly interact with a 3D (dimension) computer programme by moving inside it,The science Museum,American Central University,1. Which we

4、bsite do you think is real?,2. Would you like to visit the Science Museum website?,3. Would you like to go to a virtual university ?,Before you start,What will Cathy have to do this weekend? A. She will go to the Science Museum. B. She will go camping with her parents. C. She plans to go to use the

5、library computer. D. She has to finish the project on the history of the Internet.,Read the text quickly and choose the best answer to the following questions.,D,2. What will Tom want to do this weekend? A. He will go camping if the weather is good. B. He will help Cathy with the project. C. He will

6、 have an around-the-world tour. D. He will visit some world-famous universities.,A,3. Which is NOT the advantage of the virtual reality holiday? A. People can visit any place they like. B. People do not worry about the weather. C. People need a long time to travel. D. People will not suffer from lon

7、g- time travel.,C,4. How could you study in a world-famous university without going out of your room? A. We have the high ability of self- teaching. B. We can receive the teaching programs through TV. C. We can get information from these universities through the cyberspace. D. We can go to these uni

8、versities once a week.,C,Read the dialogue again and answer these questions.,1. Why cant Cathy go out this weekend? She has to finish her project. 2. Where is Tom planning to go? Hell go camping if the weather is good. 3. Does Cathy have a programme for “virtual” holidays on her computer? No, she do

9、esnt.,4. Does she really think she will have the chance to go on a world tour? No, she doesnt. 5. What would Tom like to do with virtual reality? He would like to go to a world-famous university. 6. Why is Cathy so excited about the technology? Because she thought she would be able to go anywhere sh

10、e liked.,Read the text carefully and organize right sentences to finish the chart below.,Virtual Reality,Toms plan,Cathys plan,Virtual university education means,Virtual reality holidays mean,to go camping with his parents if the weather is good,to finish the project on the history of the Internet,s

11、tudying in famous universities without going out of our rooms,going to any place we like without the problems of weather, time, and the means of transportation,now,future,Language points,1. What are you up to this weekend? 这个周末你打算做什么？ be up to常用在口语中问对方在做什么， 如： Tom locked himself in his room for a wh

12、ole morning. What is he up to? Tom 把自己关在房间里一个上午，他要干什么？ Wheres that naughty child now? Im sure hell be up to no good wherever he is. 那调皮孩子哪儿去了? 我看, 他到哪儿也做不出好事来。,2. Do you have anything planned for Saturday and Sunday? 你周六、周日有什么安排吗？ = Do you have anything that you have planned for Saturday and Sunday?

13、 planned for Saturday and Sunday 是过去分词短语作定语。又如： Dont use words, expressions or phrases known only to people with specific knowledge. 不要运用只有具有特别知识的人才能懂的词汇和表达方式。 The bridge built last month needs repairing. 上个月建造的那座桥需要修理。,3. Can you suggest any good books for my project? 你能提供一些和我所做的项目有关的好的参考书吗？ sugges

14、t vt. 1) 提议、建议，后可跟名词、代词、动名词和从句（从句中谓语动词用虚拟语气，即should+动词原形，should也可省略。）如： John suggested going for a walk. John 建议去散步。 I suggested to him that we (should) solve the problem another way. 我向他建议我们用另一种方式处理这个问题。,2) 暗示、表明，后跟的从句中谓语动词用陈述语气。如： His pale face suggests bad health. 他面色苍白，说明他身体不好。 There was nothing

15、 to suggest that she wanted to kill herself. 没有任何迹象显示她想自杀。 拓展 suggestion n. 建议，提议，意见 make a suggestion at sbs suggestion,提建议,由于某人的提议,Grammar: Conditional,1. Zero Conditional 零条件句，表示 “命令，建议，客观事实，经常性的事” 等。如： If I have milk before breakfast, I feel ill. 如果我早餐前喝牛奶，就会不舒服。(经常性，客观事实） If we heat the ice, it

16、 melts. 如果给冰加热，冰会融化。（客观事实） If you dont understand, ask the teacher. 如果你不明白，就问老师。（命令，建议）,2. First Conditional 第一条件句，表示 “将来有可能实现的事”。如： If I dont finish my project on the history of the Internet for next Mondays lesson, the science teacher will be angry. (Line 3 on page 12) If its good, Dad, Mum and I

17、will probably go camping. (Line 7 on page 12) If you tell me some titles, Ill look for them in the library. (Line 12 on page 12),3. Second Conditional第二条件句，又称“虚拟条件句，非真实条件句”。 1) 虚拟现在：if 从句用过去式(be用were) ，主句用would (should, could, might) +动词原形 If I were you, I would try it again. 如果我是你，我会再试一次。 If I had

18、one million dollars, I would buy the plane. 如果我有一百万美元，我会买下这架飞机。,2) 虚拟将来：if从句用were to (should)+动词原形，或用过去式，主句用would (could) +动词原形 If he came here tomorrow, I would tell him about it. 如果他明天来的话，我会告诉他这件事。 3) 虚拟过去：if 从句用had done，主句用would (should, could, might) +have done If he had worked hard, he would ha

19、ve passed the examination. 如果他努力学的话，他就通过这次考试了。,3. Second Conditional第二条件句，又称“虚拟条件句，非真实条件句”。 1) 虚拟现在：if 从句用过去式(be用were) ，主句用would (should, could, might) +动词原形 If I were you, I would try it again. 如果我是你，我会再试一次。 2) 虚拟将来：if从句用were to (should)+动词原形，或用过去式，主句用would (could) +动词原形。 3) 虚拟过去：if 从句用had done，主句用

20、would (should, could, might) +have done。,条件状语的倒装：,如果条件状语中有were, had, should时,可以倒装成：Were/ Should / Had +主+其他,Were I you, I would try it again.,Had he been there yesterday, he would have seen the film.,Should it snow tomorrow, we wouldnt go out.,If I were you, I would try it again.,If he had been there yesterday, he would have seen the film.,If it should snow tomorrow, we wo