2019-2020学年北师大版英语必修2课件：Unit 4 Period One

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1、,The future of science can only belong to the diligent and modest younger generation! 科学的未来只能属于勤奋而谦虚的年轻一代！,单元核心素养：思维品质,Can you imagine a world without the Internet？Its surprising to think about it. Now，China has more than 162 million Internet users，according to the China Internet Network Information

2、 Centre.This is the second largest number of users in the world after the United States.Today,66% of Chinese netizens(网民) are teenagers.“They spend about thirteen hours every week online，” said Qian Hulin，an Internet expert.Doctor Song in Beijing Xuanwu Hospital said，“About 14% of Chinese netizens w

3、ho are teens often last over ten hours to play online games.”,话题导入,The main reasons why teenagers surf the Net are to search for information，to communicate with others and to have fun.On the Internet，teenagers can find out almost anything.And surfing the Net can help students with their homework and

4、 widen their knowledge. Li Dong，a teacher in No.41 Middle School in Shijiazhuang，likes her students to use the Internet.“When we talk in class，students who surf the Net usually know more background information than the others，” she said. In addition，people can use the Internet to write letters or st

5、ories，send e-mails and chat.Many teens keep in touch with their friends online.It is cheaper than phoning somebody far away and also much quicker.,1.Which country has the most Internet users in the world according to the article? _ 2.Why does Li Dong in No.41 Middle School like her students to use t

6、he Internet? _ _,查看答案,Because she thinks her students can get more background information by using the Internet.,America/The United States.,根据上文回答下列问题,PART 1,读前清障,PART 2,课文理解,Period One Warm-up & Lesson 1 Tomorrows WorldPre-reading,PART 1,读前清障,匹配左边的单词与右边的汉语意思 第一组,查看答案,1.climate A.快，迅速地 2.flood B.影响

7、3.reality C.真实，现实 4.affect D.洪水，水灾；淹没 5.rapidly E.气候,6.growth A.消失 7.attack B.乐观的 8.chaos C.攻击，进攻 9.disappear D.混乱，无秩序 10.optimistic E.增长；生长,第二组,查看答案,11.entertainment A.病毒 12.harm B.明显的，显而易见的 13.crash C.伤害，损害 14.virus D.娱乐；款待 15.obvious E.(汽车、飞机等)撞毁；坠毁,第三组,查看答案,PART 2,课文理解,Skim the text and match th

8、e headings with the proper paragraphs. Para.1 A.The future of virtual reality. Para.2 B.Pessimistic ideas towards the future of cyberspace. Para.3 C.The growth of the Internet. Para.4 D.Optimistic ideas towards the future of cyberspace.,查看答案,Step 1 Fast-reading,.Tell whether the following statements

9、 are true(T) or false(F). 1.More and more computers will be connected to the Internet.( ) 2.The Internet came into the world in the 1990s.( ) 3.Some experts are pessimistic about the future of the Internet because they are worrying that the world wont be safe.( ) 4.Peter Anderson thinks people will

10、be able to work in a virtual world.( ) 5.We can live in virtual reality completely.( ),F,T,Step 2 Careful-reading,T,T,F,查看答案,.Choose the best answer according to the text. 1.The writer writes this passage in order to . A.show us the bright future of cyberspace B.tell people the disadvantages of the

11、Net C.build up the future picture of the influence of the Net on our life D.make people know about the advantages of the Net,查看答案,2.We can infer from the passage that . A.cyberspace will affect peoples life greatly B.communicating with your friends on the Internet is always secret C.the Net is sure

12、to have a good effect on peoples life D.the Net is sure to have a bad influence on peoples life,查看答案,3.Angela Rossetto thinks that . A.e-mail will surely replace mail B.most people think the Net has a bright future C.people will book tickets from the Net D.more and more people will buy what they nee

13、d on the Net,查看答案,4.The word “chaos” in the second paragraph can be replaced by “ ”. A.an accident B.a disordered situation C.a fire D.an interruption,查看答案,5.The main idea of the last paragraph is that . A.people can do everything in virtual reality B.cyberspace will play an important role in people

14、s life C.the prediction of our life in virtual reality D.people can not live without the Net,查看答案,After reading the text，please fill in the following blanks. In the last thirty years，the Internet 1. (grow) rapidly，and this growth is 2. (clear) going to continue. Some experts are pessimistic 3. the f

15、uture.One worry is crime in cyberspace.In the future,4. (terror) may “attack” the worlds computers，cause chaos，and make planes and trains crash.,查看答案,Step 3 Post-reading,has grown,clearly,about,terrorists,5. ，many people are optimistic about the future of the Internet. Already，users can buy books，fi

16、nd out about holiday offers and so on.Angela Rossetto says that in the next few years，it is clear 6. we are going to see a huge 7. (grow) in shopping on the Internet.She also believes that，in the future，we 8. (get) entertainment from the Net and that television will probably disappear.The mail servi

17、ce may also disappear with the 9._ (increase) use of e-mail. Some experts see our future in virtual realitythe use of computers with sounds and pictures that make you feel as if you are in 10. real situation.,查看答案,However,that,growth,will get,increasing,a,1.She also believes that，in the future，we wi

18、ll get entertainment from the Net and that television will probably disappear. 句式分析自主翻译 _ _,她还确信，我们将来可以在网上进行娱乐活动，而且那时电视很可能不复存在。,Step 4 Sentence-learning,She also believes that,in the future,we will get entertainment from the Net,and that television will probably disappear.,查看答案,主句,插入语,宾语从句一,宾语从句二,连接

19、两个宾语从句,2.Some experts see our future in virtual realitythe use of computers with sounds and pictures that make you feel as if you are in a real situation. 句式分析 本句为复合句，破折号后的成分作virtual reality的同位语。同位语中that引导定语从句，as if引导表语从句。 自主翻译 _ _,一些专家预见了虚拟现实的未来计算机通过声音和图像模拟现实，以使人感到仿佛置身于一个真实的空间中。,查看答案,3.We will work in virtual offices，shop in virtual supermarkets，and we will even study in virtual schools. 句式分析自主翻译 _ _,我们将来会在虚拟办公室工作，在虚拟超市购物，甚至在虚拟学校学习。,We will work in virtual offices,shop in .,and we will even study in virtual schools.,并列分句一,并列分句二,并列连词,查看答案,两个并列谓语动词,