人教版_英语_必修二第三单元教学案 2

Unit 3 Computers单元学习目标:单元背诵:1.And my memory became so large that even I couldn't believe it！2.Anyhow, my goal is to provide humans with a life of high quality.3.Today an increasing number of people have realized that law education is of great importance.4. The two cultures have a lot in common.5.As time went by,I gradually adapted myself to the school life .6.With winter coming ,it is getting colder and colder.7. As a result,I have made steady progress in my study.8. So precious is the time that we can't waste it.9.I would appreciate it if you can give me some good advice .10.what has impressed us most is her devotion to work.单元重难点:重点句型:1．As time went by, I was made smaller.2．My memory became so large that even I couldn’t believe it!3．I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage.重点语法：现在完成时的被动语态Period oneReading WHO AM I?Over time I have been changed quite a lot. I began as a calculating machine in France in 1642. Although I was young I could simplify difficult sums. I developed very slowly and it took nearlytwo hundred years before I was built as an analytical machine by Charles Babbage. After I wasprogrammed by an operator who used cards with holes, I could "think" logically and produce an answer quicker than any person. At that time it was considered a technological revolution and the start of my "artificial intelligence". In 1936 my real father, Alan Turing, wrote a book about howI could be made to work as a "universal machine" to solve any difficult mathematical problem. From then on, I grew rapidly both in size and in brainpower. By the 1940s I had grown as large as a room, and I wondered if I would grow any larger. However, this reality also worried mydesigners. As time went by, I was made smaller. First as a PC (personal computer) and then as a laptop, I have been used in offices and homes since the 1970s.These changes only became possible as my memory improved. First it was stored in tubes, then on transistors and later on very small chips. As a result I totally changed my shape. As I have grown older I have also grown smaller. Over time my memory has developed so much that, like an elephant, I never forget anything I have been told! And my memory became so large thateven I couldn't believe it! But I was always so lonely standing there by myself, until in the early 1960s they gave me a family connected by a network. I was able to share my knowledge with others through the World Wide Web.Since the 1970s many new applications have been found for me. I have become veryimportant in communication, finance and trade. I have also been put into robots and used to make mobile phones as well as help with medical operations. I have even been put into space rockets and sent to explore the Moon and Mars. Anyhow, my goal is to provide humans with a life of high quality. I am now truly filled with happiness that I am a devoted friend and helper of the human race!一级阅读目标:Ⅰ. Look up the words in the dictionary and then match them with the pictures.A. host computerB. screenC. keyboardD.mouseE.monitorD. speakerⅡ. Guessing game: Do you know who I am?1.I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they don’t like me now.2.I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems.3.I can be used for calculating. Besides, I can also be used for watching DVD, sending e-mail and communicating through the Internet. However, I am not a PC, becauseI’m small enough for you to take me with you.4. I can be used as a laptop. However, I am not a laptop, becauseI’m small enough for you to hold me in your hand.III. Skimming1.Who is the speaker in this story?2. What’s the main idea of the text?A. The computer wants to find “who he is”.B. The function of the computer.C. The computer becomes popular around the world.D. The changes and the applications of the computer.二级阅读目标:Detail-readingⅠ.Choose the best answer according to the passage.1.Who was the first person to make the earliest computer?A. Alan TuringB. Charles BabbageC. Charles TuringD.Alan Babbage2. When was the computer biggest?A. In 1642.B. In 1936.C. In the 1940s.D. In the 1970s.3. According to the text, the computer has grown smaller mainly because .A. it use good materialB.it was too large in the pastC.its memory has improved a lotD.there is less room on the beath4.which of the following is in the right order of time?a.The computer was connected with other computers.b.Alan Turing wrote a book about the computer.c. The computer has been sent to explore the Moon and Mars.d.The computer began to simplify difficult sums.A. abcd. B, bcad. C, dacb. D.dbacⅡ.Fill in the form according to the passage.1642The computer began as a 1. machine.About 200 years later The 2. machine was built by Charles Babbage and it was the start of 3. “ intelligence”1936Alan Turing wrote a book to describe how computers could be made to work as a 4. “ Machine”1940s～1970s Because information can be stored in tubes, then on 5.and later on very small 6. , computers became smaller.1960s The first family of computers was 7. to each other by a 8.1970s Computers were used in offices and 9. .now Computers 10. people all over the world together.三级阅读目标I .SummaryFill in the blanks with proper words according to the passage.I began as a ___________ machine in 1642 in France. About 200 years later I was built as an _________ machine. Then in 1936 Alan Turing wrote a book and built a “ _________ machine”.As time _____ _____, I was made smaller. These changes became possible because my memory improved. In the 1960s they gave me a family connected by a _________ . Now people call it the World Wide Web. I have been used in _________ and homes since the1970s. So I became a PC. I’m happy to become a _________friend and helper of the_________ _________.Ⅱ. Discuss in groups the advantages and dis advantages of the computer.Period two vocabulary课前自测·预习（homework）I.Please translate the following sentences into Chinese and pay attention to the words in black.1.With the development of technology，our life is more convenient and happier than before.2.English is referred to as a universal language.3.The industrial revolution took place in England first.4. Though Einstein is ordinary-looking, he is highly intelligent.5.It may snow, but anyhow I will go to the town.6.Personally, I think he is a very good man, but you may not agree.7.You’d better set a goal before you begin to learn English.8.The sum of 5 and 3 is 8.9.The experts are exploring every part of the island and want to find something unusual.10.I was fitted an artificial tooth by the dentist.II. Finish the following phrases1.in common ___________2.go by ___________3.as a result ___________4.from…on ___________5.so…that…___________6. ___________与…分享…7. ___________和…一样；和；也8. ___________提供某人某物9. ___________充满… 10.______________总计III.word formation (try to finish the following words )1. ____________ vt.计算→calculator n. 计算器2.universe n. 宇宙→___________ adj.普遍的；通用的；宇宙的→universally adv.普遍地3.simple adj. 简单的→__________ vt.简化4. ___________ adj.合逻辑的；合情理的→logically adv.逻辑上；合逻辑地；有条理地5. ___________ n. 工艺；科技；技术→ _________ adj.科技的6. ____________ n. 智力；聪明；智能→___________adj.智能的；聪明的7. ___________ n. 真实；事实；现实→ real adj.真实的，真的8. ___________ adj. 私人的；个人的；亲自的→____________ adv.就个人而言；亲自9. ___________adj. 总的；整个的→___________ n. 总数；合计→__________ adv.完全地；整个地10. solve vt.解决；解答→ ____________n．解答IV 选词填空have…in common; from then on; as a result; in total; so…that…;in the early 1960s; share…with…; go by1.There were about 40 people _____.2.As time _________, his mother’s hair turned grey.3.He was ill. _________, he didn’t go to school.4.She was _____excited _____she couldn’t go to sleep.5.Great changes took place in China _________.6. _________, he refused to talk about it.7.I _________ nothing _________with jane.8.Children should be taught to _________ their toys _______other children.V长难句分析1. In 1936my real father, Alan Turing, wrote a book about how I could be made to work as a “universal machine” to solve any difficult mathematical problem.2.By the 1940s I had grown as large as a room, and I wondered if I would grow any larger.分析：（1）本句是由_____连接的并列句，前半句是简单句，后半句是复合句。