外研版英语九上M4Unit2课件.ppt

How long has it been used? Its used for more than 50 years.,Who invented it? Its invented by Americans.,When was it invented? It was invented in 1946.,What can it be used for? It can be used for ,Free talk,What can you do on Internet ?,shopping,information,chat with friends,listen to the music,Can 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 1,Para 2,Para 3,Para 4,Para 5,Read the passage again. Make notes to complete the timeline.,Paper first created,Printing developed,Information downloaded from the Internet,Books may be replaced by computers,Read 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 to read 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 spread,1. 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 ideas of the paragraphs,Every 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 print,Read and get the main ideas of 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 werent many books, few people learned to read.,a. The world before books,Read and get the main ideas of 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 printing,Read and get the main ideas of the paragraphs,But 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 ideas of the paragraphs,Computers 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 dont 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 Points,5. 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 cant compare him with Tom, theyre different. as compared with 与比较 Hes really done better as compared with last term.,Language Points,9. rather than 胜过,而不愿 Eg. He would choose Sunday rather than Saturday. I would like to go with you rather than stay at home. prefer to do rather than do 情愿而不,be replaced by 被.所替代 be read online 在网上阅读,Language Points,1. 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 Points,3. be made of - be made from- be made up of - be made in- be made by be made into -,由材料制成(看得出材料),由材料制成(看不出材料),由组成(部分或成员),出产于(某地),由制成(生产者),制成.(产品),Ex. 1. Look at the camera, Where is it _? Japan. 2. The table is _wood, while paper is _wood. 3. Our class is _twenty boys and twenty three girls. 4. The metal can be _ a knife. 5. This kind of car is _ many workers in the factory.,made in,made of,made from,made up of,made by,made into,Language Points,4. write words on- make a book - in those days - at a time - by hand - as a result -,在上写字 做成书 在过去 一次,每次 手工地 结果