外研版英语九上M4Unit2课件.ppt

How long has it been used? It’s used for more than 50 years.Who invented it? It’s invented by Americans. When was it invented? It was invented in 1946.What can it be used for…? It can be used for …Free talkWhat can you do on Internet ?shoppinginformationchat with friendslisten to the musicCan books be replaced by computers? Why?外研初中三年级上册Module 4 Great inventions Unit 2 Books could be produced more quickly and cheaply.New words• produce • invention • look through • create • cotton • wood • at a time • by hand• 生产 • 发明 • 浏览 • 创造 • 棉花 • 木材 • 一次 • 用手工(制造)• ink • block • at the beginning of • knowledge • spread • introduction • rather than • CD-ROM• one day•墨水 •板子；街区 •在……的开始 •知识 •散播，传播 •传入；介绍 •而不是…… •只读光盘，只读光盘存储器 •某天Read the passage and match the main ideas with the paragraphs. c. Life on paper and in print a. The world before books b. The invention of printing d. Technology and books e. Can books be replaced by computers?Para 1Para 2 Para 3Para 4Para 5Read the passage again. Make notes to complete the timeline.today2,000 years ago11th centuryin the futurePaper first createdPrinting developedInformation downloaded from the InternetBooks may be replaced by computersRead the passage again and answer the questions. 1. Why were books expensive and rare before the invention of printing?Because they were written by hand.Because more people learned toread and bought books.2. Why did ideas spread more quickly when books became cheaper?Answer the questions. Use the words in the box to help you.create develop hold keep produce receive spread1. When was paper first created? When do you think were first created? Paper was first created about 2,000 years ago. Books were first created soon after paper.2. Were books produced by hand or by machine at first? By hand.3. What was the paper held against?4. When was printing developed?Paper was held against wooden blocks.At the beginning of the 11th century.5. What can be kept on CD-ROMs?6. What can be received online?Information.Information.Read and get the main ideasof the paragraphsEvery morning my father buys a newspaper on his way to work. Every day I open my books in class and start my lessons. Every evening my mother looks through magazines at home. And Every night, I look at the posters with photos of David Beckham and Yao Ming on my bedroom wall before I go to sleep. Can we imagine life without paper or print?c. Life on paper and in printRead and get the main ideasof the paragraphs Paper was first created about 2,000 years ago, and has been made of silk, cotton, bamboo, and since he 19th century, of wood. People learned to write words on paper to make a book. But in those days, books could only be produced one at a time by hand. As a result, they were expensive and rare. And because there weren’t many books, few people learned to read.a. The world before booksRead and get the main ideasof the paragraphs Then printing was invented in China. The first printed books were made by putting ink against a wooden block and holding the paper against it. When printing was developed greatly at the beginning of the 11th century, books could be produced more quickly and cheaply. As a result, more people learned to read. After that, knowledge and ideas spread quickly, in a way that can be compared with the introduction of the Internet in the 20th century. b. The invention of printingRead and get the main ideasof the paragraphsBut will books be needed in the future? Today information can be received online, downloaded from the Internet rather than found in books, and information can be kept on CD-ROMs or machines such as MP3 players. These machines are smaller and lighter than books so that they can be carried very easily.d. Technology and books Read and get the main ideasof the paragraphsComputers are already used in classrooms, and newspapers and magazines can already be read online. So will books be replaced by computers one day? No, I don’t think the Yao Ming poster on my bedroom wall will ever be replaced by computer two meters high!e. Can books be replaced by computers? Language Points5. put… against 将…放进/刻进hold… against 将…贴到 6. at the beginning of 在…初/ 开始时after that 然后,之后in a way 以…方式7. compare…. with…. 与….相比 , 与….相媲美 You can’t compare him with Tom, they’re different.as compared with… 与…比较 He’s really done better as compared with last term.Language Points9. rather than 胜过,而不愿 Eg. He would choose Sunday rather thanSaturday. I would like to go with you rather thanstay at home.prefer to do… rather than do… 情愿…而不10.be replaced by 被….所替代be read online 在网上阅读 Language Points1. looks through 浏览，温习 Eg. He looked through many books in order to find the correct answer. 为了找到正确答案,他查阅了许多书籍.2. with– without 带有… / 没有… eg. He found a house with many trees around.他找到了一所周围有许多树的房子.He went to school without breakfast today.他今天没有吃早饭就去上学了.Language Points3. be made of ----be made from--- be m。