2019_20學(xué)年高中英語Unit4CyberspacePeriodOne課件北師大版必修.pptx

,The future of science can only belong to the diligent and modest younger generation! 科學(xué)的未來只能屬于勤奮而謙虛的年輕一代！,單元核心素養(yǎng)：思維品質(zhì),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 Centre.This is the second largest number of users in the world after the United States.Today,66% of Chinese netizens(網(wǎng)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 who are teens often last over ten hours to play online games.”,話題導(dǎo)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 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 stories，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 the Internet? _ _,查看答案,Because she thinks her students can get more background information by using the Internet.,America/The United States.,根據(jù)上文回答下列問題,PART 1,讀前清障,PART 2,課文理解,Period One Warm-up & Lesson 1 Tomorrows WorldPre-reading,PART 1,讀前清障,匹配左邊的單詞與右邊的漢語意思 第一組,查看答案,1.climate A.快，迅速地 2.flood B.影響 3.reality C.真實(shí)，現(xiàn)實(shí) 4.affect D.洪水，水災(zāi)；淹沒 5.rapidly E.氣候,6.growth A.消失 7.attack B.樂觀的 8.chaos C.攻擊，進(jìn)攻 9.disappear D.混亂，無秩序 10.optimistic E.增長；生長,第二組,查看答案,11.entertainment A.病毒 12.harm B.明顯的，顯而易見的 13.crash C.傷害，損害 14.virus D.娛樂；款待 15.obvious E.(汽車、飛機(jī)等)撞毀；墜毀,第三組,查看答案,PART 2,課文理解,Skim the text and match the 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 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 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 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 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 need 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 peoples 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 future.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，find 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 service 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 will get entertainment from the Net and that television will probably disappear. 句式分析 自主翻譯 _ _,她還確信，我們將來可以在網(wǎng)上進(jìn)行娛樂活動(dòng)，而且那時(shí)電視很可能不復(fù)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,插入語,賓語從句一,賓語從句二,連接兩個(gè)賓語從句,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 本句為復(fù)合句，破折號(hào)后的成分作virtual reality的同位語。同位語中that引導(dǎo)定語從句，as if引導(dǎo)表語從句。 自主翻譯 _ _,一些專家預(yù)見了虛擬現(xiàn)實(shí)的未來計(jì)算機(jī)通過聲音和圖像模擬