北師大版高中英語必修2 Unit4 Lesson1 精品課件

1、 Unit 4Lesson 1Tomorrows WorldStep 1 Warm up Modern technology (現(xiàn)代科技）現(xiàn)代科技）helps us do many things. Digital Cameras 數(shù)碼相機數(shù)碼相機MP3computersrobots (機器人）機器人）the Internetcellphones (無線電話）無線電話）CD (Compact Disc) 光盤光盤DVD(Digital Video Disc) 數(shù)字化視頻光盤數(shù)字化視頻光盤smartconvenientmulti-functionalsend SMS, call,alarm clo

2、ck, games,take photos, mp3, go on linetypical cell phoneOnly for callsHave you ever seen such a camera?Digital cameragramophonemp3walkmanmp4Can you imaginewhat a computerlooked like in the 1980s?But in the 21st. century, Step 1 Warm up But modern technology (現(xiàn)代科技）現(xiàn)代科技）can also cause problems. Work i

3、n small groups of 4 and discuss : Group1: the advantages(優(yōu)點）優(yōu)點）of robots Group2: the disadvantages（不足）（不足）of robots Group3: the advantages of computers Group4: the disadvantages of computersTechnology AdvantagesRobots Disadvantages1.Robots can work in dirty and dangerous places.2. Robots can work wi

4、thout sleep and food.1. Robots cant think or make decisions.2. People may lose jobs if robots are used instead of humans.Technology AdvantagesComputers Disadvantages1. Computers are expensive.2. Computers cant think or make decisions.1. Computers help us work faster.2. Computers can help us solve di

5、fficult problems. Step 2 Guessing:Which of these topics do you think it will mention? Read fast and find out!the Internet artificial human time travel robots global warmingvirtual reality （虛幻（虛幻/模擬現(xiàn)實）模擬現(xiàn)實）Step 3 DiscussionTake out a sheet of paper. Work in groups of 4 and write down the structure of

6、 the passage. (文章的寫作結(jié)構(gòu)）文章的寫作結(jié)構(gòu)）Tips:（提示）從文章的兩類人的觀點著手。（提示）從文章的兩類人的觀點著手。 1. Why are some experts pessimistic (悲觀的）悲觀的） about the future of the Internet? 2. Why are some people optimistic （樂觀的）（樂觀的） about the future of the Internet? pessimistichackersCyber terroristsnowin the futurecybercriminaloptimis

7、ticin the future virtual realityworkshopstudyget entertainment TV & postal servicewill disappearalreadyin the next few yearsshop on the Internetget informationbuy booksfind out holiday offersbook ticketsThe structure of the passage (文章的寫作結(jié)構(gòu)）文章的寫作結(jié)構(gòu)）bad : pessimistic (悲觀的）悲觀的）good : optimistic （樂

8、觀的）（樂觀的）How doesthe computerand the Netare going to affect our lives.Topic Sentence （中心句）（中心句）Step5 Learning vocabulary Read the article and match the vocabulary from the text below with the definitions.hacker, chaos, terrorist, the Net (Internet), virtual reality, crash1、a person who enters other p

9、eoples computer programmes in secrethacker2. The use of computers to make situations feel and look real virtual reality3. have an accident by violently hitting something 4. someone who does terrible things to harm countries, governments and peoplecrashterrorist5. computer system that allows millions

10、 of people around the world to share information the Net6. A terrible situation in which everything goes wrongchaosStep 5Enjoy the reading.summaryThe article talks about _.Different people have different ideas. Some are_. They worry about the crime, hackers and terrorists in cyberspace. However, man

11、y people are_. They think computer can make our life easier. People can buy books, _ticket, etc. Some experts believe that we will live in a_ in the future.the future of cyberspacepessimisticoptimisticbookvirtual worldStep 6 Creation and Speaking After reading the article and discuss:What will you do to bring the machinesand people both together and mak