1、Unit 4 Cyberspace Lesson 3 Virtual Reality模块二模块二What is Virtual Reality?虚拟现实虚拟现实,就是说本来没有的事物和环就是说本来没有的事物和环境境,通过各种电脑技术虚拟出来通过各种电脑技术虚拟出来,让人让人感觉到就如真实的一样。感觉到就如真实的一样。The use of computers to make situations feel and look real.虚拟现实技术虚拟现实技术就是人们利用就是人们利用计算机计算机生成一个逼真的生成一个逼真的三维三维虚拟虚拟环境，通过自然技能使用传感设备与之相互作用的新技术。环境，通
2、过自然技能使用传感设备与之相互作用的新技术。它将它将模拟环境模拟环境、视景系统视景系统和和仿真系统仿真系统合三为一，并利用合三为一，并利用头盔头盔显示器、图形显示器、图形眼镜眼镜、数据、数据服服、立体声耳机、数据、立体声耳机、数据手套手套及及脚踏脚踏板板等等传感装置传感装置,把操作者与计算机生成的三维虚拟环境连结把操作者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“不随心不随心”的虚拟环境。如虚拟博物馆
3、是用计算机虚拟技术的虚拟环境。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，物体的于计算机中，物体的3D3D模型可以无限期展示，没有被毁坏、模型可以无限期展示，没有被毁坏、被偷窃的危险。被偷窃的危险。What do you know about virtual reality technology?Have you ever played virtual reality computer ga
4、mes?Have you ever played virtual reality computer games?Have you ever played virtual reality computer games?headsets and specialgloves and suitsequipped with sensors the user can directly interact with a 3D(dimension)computer programme by moving inside it.The science Museum American Central Universi
5、ty1.Which website 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 Listen to the dialogue and answer the above questions.Listen carefully to the dialogue between Tom and Cathy,and try to fill in the blank with t
6、he right words.Tom:Hi,Cathy!What are you _ this weekend?Cathy:I have a lot of work to do.If I dont _ on the history of Internet for next Mondays lesson,the science teacher _ be angry.Do you have anything planned for Saturday and Sunday?Tom:If the weather is good,my family will _.We wont go if it rai
7、ns.If I stay home,Ill help you with your project if you like.up tofinish my projectwillgo campingTom:If you go to the Science Museum _,youll find lots of good information.Cathy:Thanks for your suggestion.Just think,if we had _ holidays,we _ have any problems with the weather.We wouldnt have to spend
8、 a long time travelling to get to our holiday _.In the future,well be able to use modern technology to go anywhere we like.websitevirtual realitywouldntdestinationsTom:Do you mean well use the _ to travel around the world?Cathy:Thats right!Just _it.We would also be able to go to study in any world f
9、amous _ we wanted to.Tom:Great!But personally,I prefer _ universities to virtual reality holidays.imagineuniversitiesvirtualcomputer1.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 library computer.D.She
10、 has to finish the project on the history of the Internet.Read the text quickly and choose the best answer to the following questions.D2.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 have an around-the-world tour.D.H
11、e will visit some world-famous universities.A3.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 long-time travel.C4.How could you study in a world
12、-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 universities once a week.CRead the dialogue again and answer th
13、ese 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 doesnt.4.Does she really think she will have the chance to go on a world tou
14、r?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 she liked.Read the text carefully and organize right sentences to finish the chart bel
15、ow.Virtual Reality Toms plan Cathys planVirtual university education meansVirtual reality holidays meanto go camping with his parents if the weather is goodto finish the project on the history of the Internet studying in famous universities without going out of our rooms going to any place we like w
16、ithout the problems of weather,time,and the means of transportation nowfutureLanguage points1.What are you up to this weekend?这个周末你打算这个周末你打算做什么？做什么？be up to常用在口语中问对方在做什么，常用在口语中问对方在做什么，如：如：Tom locked himself in his room for a whole morning.What is he up to?Tom 把自己关在房间里一个上午，他要干什么？把自己关在房间里一个上午，他要干什么？Wh
17、eres that naughty child now?Im sure hell be up to no good wherever he is.那调皮孩子哪儿去了那调皮孩子哪儿去了?我看我看,他到哪儿也做不出好事他到哪儿也做不出好事来。来。2.Do you have anything planned for Saturday and Sunday?你周六、周日有什么安排吗你周六、周日有什么安排吗？=Do you have anything that you have planned for Saturday and Sunday?planned for Saturday and Sunday
18、 是过去分词是过去分词短语作定语。又如：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。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。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
19、好的参考书吗你能提供一些和我所做的项目有关的好的参考书吗？suggest vt.1)提议、建议，后可跟名词、代词、动名词和从句提议、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（从句中谓语动词用虚拟语气，即should+动词原形，动词原形，should也可省略。）如：也可省略。）如：John suggested going for a walk.John 建议去散步。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我向他建议我们用另一种方式处理
20、这个问题。2)暗示、表明，后跟的从句中谓语动词用陈述语气。暗示、表明，后跟的从句中谓语动词用陈述语气。如：如：His pale face suggests bad health.他面色苍白，说明他身体不好。他面色苍白，说明他身体不好。There was nothing to suggest that she wanted to kill herself.没有任何迹象显示她想自杀。没有任何迹象显示她想自杀。拓展拓展 suggestion n.建议，提议，意见建议，提议，意见 make a suggestion at sbs suggestion提建议提建议由于某人的提议由于某人的提议Gramma
21、r:Conditional1.Zero Conditional 零条件句，表示零条件句，表示“命令，命令，建议，客观事实，经常性的事建议，客观事实，经常性的事”等。如：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。如果我早餐前喝牛奶，就会不舒服。(经常性，经常性，客观事实）客观事实）If we heat the ice,it melts.如果给冰加热，冰会融化。如果给冰加热，冰会融化。（客观事实）（客观事实）If you dont understand,ask the teacher.如果你不明白，就问老师。如果你
22、不明白，就问老师。（命令，建议）（命令，建议）2.First Conditional 第一条件句，表示第一条件句，表示“将来将来有可能实现的事有可能实现的事”。如：。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 will probably go camping.(Line 7 on page 12)If you te
23、ll me some titles,Ill look for them in the library.(Line 12 on page 12)3.Second Conditional第二条件句，又称第二条件句，又称“虚虚拟条件句，非真实条件句拟条件句，非真实条件句”。1)虚拟现在：虚拟现在：if 从句用过去式从句用过去式(be用用were)，主，主句用句用would(should,could,might)+动词原形动词原形 If I were you,I would try it again.如果我是你，我会再试一次。如果我是你，我会再试一次。If I had one million doll
24、ars,I would buy the plane.如果我有一百万美元，我会买下这架飞机如果我有一百万美元，我会买下这架飞机。2)虚拟将来：虚拟将来：if从句用从句用were to(should)+动词原动词原形，或用过去式，主句用形，或用过去式，主句用would(could)+动动词原形词原形 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。如果他明天来的话，我会告诉他这件事。3)虚拟过去：虚拟过去：if 从句用从句用had done，主句用，主句用would(should,could,might)+h
25、ave done If he had worked hard,he would have passed the examination.如果他努力学的话，他就通过这次考试了。如果他努力学的话，他就通过这次考试了。4.Second Conditional第二条件句，又称第二条件句，又称“虚虚拟条件句，非真实条件句拟条件句，非真实条件句”。1)虚拟现在：虚拟现在：if 从句用过去式从句用过去式(be用用were)，主，主句用句用would(should,could,might)+动词原形动词原形 If I were you,I would try it again.如果我是你，我会再试一次。如果我
26、是你，我会再试一次。2)虚拟将来：虚拟将来：if从句用从句用were to(should)+动词原动词原形，或用过去式，主句用形，或用过去式，主句用would(could)+动动词原形。词原形。3)虚拟过去：虚拟过去：if 从句用从句用had done，主句用，主句用would(should,could,might)+have done。条件状语的倒装：条件状语的倒装：如果条件状语中有如果条件状语中有were,had,should时时,可以可以倒装成：倒装成：Were/Should/Had+主主+其他其他Were I you,I would try it again.Had he been t
27、here 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 wouldnt go out.If you smoked here,you would be fined 500.If you drove too fast,you would hu
28、rt a child.Write sentences as Second Conditionals according to the picture.If you went through this gate,a dog would bite you.If you rode your bike,the police would stop you.If you sat here,you would get paint on your clothes.If you made a noise,the library worker would ask you to go out.If you took
29、 a photograph,you would have to pay 300.If you swam in the river,maybe you would die.Homework1.Discuss the advantages and disadvantages of a virtual university?2.Do Exercises 6,8,9 and 10 on page 13.What is this animal?It was an Elephant!What is this animal?The elephant is the largest animal that li
30、ves on land.Some male elephants can grow to be thirteen feet tall.Thats more than twice as tall as many human adults.Elephants can weigh as much as a school busbetween ten and fourteen thousand pounds!It was an Elephant!In the USA the elephant is the symbol of the party.Turn the page to find out whi
31、ch party!The elephant is the largest animal that lives on land.Some male elephants can grow to be thirteen feet tall.Thats more than twice as tall as many human adults.Elephants can weigh as much as a school busbetween ten and fourteen thousand pounds!The traditional symbol for the Republican Party first appeared in a cartoon in the 7 November 1874 edition of Harpers Weekly by the artist Thomas Nast.Ans.The RepublicansIn the USA the elephant is the symbol of the party.Turn the page to find out which party!
