2. Period Three

4. Definition of virtual reality virtual reality: Pictures made by computers that seem real-life to the person looking at him or the use of computers with sounds and pictures that make you feel as if you were in a real situation.

5. headsets and special gloves and suits equipped with sensors the user can directly interact with a 3D (dimension ) computer programme by moving ‘inside’ it.

7. Playing virtual reality computer games Possible uses for virtual reality now

8. Learning to fly using virtual reality simulator

9. Visiting virtual museums on the Internet

10. (1) Is virtual reality holidays possible now? (2) Do we have virtual universities now?.

11. 1. Why can’t Cathy go out this weekend? 2. Where is Tom planning to go ? 3. Does Cathy Have a programme for‘virtual’holidays on her computer?. Read the dialogue and answer the questions below. 4. Does she really think she will have the chance to go on a world tour? 5. What would Tom like to do with virtual reality? 6. Why is Cathy so excited about the technology?

12. Why can’t Cathy go out this weekend? She has to finish her project. Where is Tom planning to go ? He’ll go camping if the weather is good. Does Cathy Have a programme for ‘virtual’ holidays on her computer? No.

13. Does she really think she will have the chance to go on a world tour? No. What would Tom like to do with virtual reality? He would like to go to a world-famous university. Why is Cathy so excited about the technology? Because she thought she would be able to go anywhere she liked.

14. 时 间 If 条件句主 句 过 去 had done Would 等 +have done 现 在 did / were Would 等 + do 将 来 should do were to do did / were Would 等 + do Subjunctive mood :

15. 1) The volleyball match will be put off if it _____. A. will rain B. rains C. rained D. is rained 2) --- Would you have called her up _ ____ possible? --- Yes, but I _____ busy doing my homework. A. had it been … wasB. if it was … were C. if it had been … had beenD. if it were … would be B A 3) You didn’t let me drive. If we ____ in turn, you ____ so tired. （ 96 N ） A. drove…didn’t getB. had driven…wouldn’t have got C. drove…wouldn’t get D. were driving…wouldn’t get B

16. 4) It is hard for me to imagine what I would be doing today if I _____ in love, at the age of seven, with the Melinda Cox Library in my hometown. (02 上海 ) A. wouldn’t have fallenB. had not fallen C. should fallD. were to fall B 5 ） What would have happened, _____ as far as the river bank? A.Bob had walked fartherB. if Bob should walk farther C. had Bob walked fartherD. if Bob walked farther 6 ） If you _____ him yesterday, you _____ what to do now. A.asked … would knowB. had asked … would have known C. asked him … knowD. had asked … would know C D

17. 7 ） Jack ____ yet, otherwise he would have phoned me. (N 97) A. mustn’t have arrivedB. shouldn’t have arrived C. can’t have arrivedD. needn’t have arrived C 8 ） The teacher demanded that the work _____ before 4 o’clock. A. finished B. be finished C. should finish D. finish 9 ） --- What did the doctor say about your mother’s illness? --- He suggested that she _____ an operation at once. A. must haveB. hadC. haveD. had had B C Check answers on your work book ！

18. Harvard University

19. University of Cambridge

20. University of Oxford

21. Tsinghua University

22. Beijing University

23. What are the advantages and disadvantages of a virtual university? Would you like to go to such a university? Why?

24. Real university Advantages: 1.Learn and improve one’s social skills 2.Attend all kinds of colorful activities 3.Communicate with different sorts of people 4.…….. Disadvantages: 1.Have to pay a lot of money for study 2.Not safe enough 3.……..

25. Save money to build the walls and teaching buildings. Anytime, anyplace It is convenient to attend More comfortable learning environment Don't have to pay tuition Save transportation time Lower cost :download text material instead of buying Advantages of a virtual university

26. 1. Can’t learn and improve someone’s social skills 2. Nonverbal languages like gestures are important cues in FFC (Face-to-face communication ) 3. Can’t go to a virtual university without special equipments (special headset and gloves) Disadvantages of a virtual university

27. 什么是虚拟现实技术呢？简单地说，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。它与传统的模拟技术完全不同，是将模 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。

28. 比如，计算机虚拟的环境是一座楼房， 内有各种设 备、物品，操作者会如同身 临其境一样，可以通过各种传感装置在 屋内行走查 看、开门关门、搬动物品； 对房屋设计上的不满意之处，还可随意 改动。

29. Writing: Write a short passage about “The advantages and disadvantages of a virtual university”.