Unit 4 Cyberspace示范公开课教学课件【北师大版必修2】.ppt

Advantages of a virtual university Save money to build teaching buildings. It is convenient to attend (anytime, anyplace) More comfortable learning environment Don't have to pay tuition Save transportation time Lower cost :download text material instead of buying can’t learn and improve someone’s social skills lack of Face-to-face communication can’t go to a virtual university without special equipments (special headset and gloves) Disadvantages of a virtual university Read the conversation in pairs to find out: first conditional sentences; second conditional sentences; sentences or expressions about arrangements or plans; good expressions. you did maths homework in a Chinese class; you broke a tube in a chemistry class; you were late for school today; you lost the money for the next month’s lunch; your close friend didn’t talk to you this morning; you were the only one who didn’t wear school uniform Think about what would happen/what you would do if … Different ideas Pessimistic Optimistic Crime in cyberspace: hackers can get into the computers of banks and governments terrorists may attack the world’s computers, cause chaos, and make plane and trains crash Now we can buy books, find out about holiday offers, book tickets, and get all sorts of information from the Internet. “It is clear that we are going to see a huge growth in the shopping on the Internet.” We will get entertainment from the Internet. Television and mail service may disappear. Our future in virtual reality The use of computers will _____________________________________ Virtual reality will _____________________________________ make you feel as if you are in a real situation. become a part of modern life. An interview at an international conference A journalist is interviewing three experts about the future of cyberspace at an international cyberspace conference. A—journalist B—an expert who is pessimistic about the future C—an expert who is optimistic a