人教版-英语-必修二第三单元教学案2.doc
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1、 Unit 3 Computers单元学习目标: 单元背诵: 1.And my memory became so large that even I couldnt 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.A
2、s 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 cant waste it.9.I would appreciate it if you can give me some good advice.10.what has impress
3、ed us most is her devotion to work.单元重难点: 重点句型: 1As time went by, I was made smaller.2My memory became so large that even I couldnt believe it!3I 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 one Readi
4、ngWHO 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 nearly two hundred years before I was built as an analytical machine by Charles Babbage. After I was pr
5、ogrammed 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 how I could be made
6、 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 my designers. As time went by, I was ma
7、de 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.
8、 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 that even I couldnt believe it! But I was always so lonely standing there by myself, until in the early 1960s th
9、ey 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 very important in communication, finance and trade. I have also been put into robots and used to make mobil
10、e 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:. Loo
11、k up the words in the dictionary and then match them with the pictures.A. host computer B. screen C. keyboardD.mouse E.monitor D. speaker. Guessing game: Do you know who I am?1.Iamveryoldnow.Iwas born in China. Many people used me for calculating in the past, but nowIama bit lonely because they dont
12、 like menow. 2.Iamverysmall.Ican be used for calculating. In China, a lot of students use me when solving mathematical problems. 3.Ican be used for calculating. Besides,Ican also be used for watching DVD, sending e-mail and communicating through the Internet. However,Iamnot a PC, becauseIm small eno
13、ugh for you to take me with you. 4. Ican be used as a laptop. However, I am not a laptop, becauseIm small enough for you to hold me in your hand. III. Skimming1. Who is the speaker in this story? 2. Whats the main idea of the text?A. The computer wants to find “who he is”.B. The function of the comp
14、uter.C. The computer becomes popular around the world.D. The changes and the applications of the computer.二级阅读目标: Detail-reading.Choose the best answer according to the passage.1. Who was the first person to make the earliest computer?A. Alan Turing B. Charles BabbageC. Charles Turing D.Alan Babbage
15、2. 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 follo
16、wing 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.dbac.Fill in the form according
17、to the passage.1642The computer began as a 1. machine.About 200 years laterThe 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”1940s1970sBecause information can be stored
18、in tubes, then on 5. and later on very small 6. , computers became smaller.1960sThe first family of computers was 7. to each other by a 8. 1970sComputers were used in offices and 9. .nowComputers 10. people all over the world together.三级阅读目标 I .SummaryFill in the blanks with proper words according t
19、o the passage. Ibegan as a _ machine in 1642 in France. About 200 years laterI was built as an _ machine. Then in 1936 Alan Turing wrote a book and built a “ _ machine”. As time _ _,Iwas made smaller. These changes became possible because my memory improved. In the 1960s they gave me a family connec
20、ted by a _ . Now people call it the World Wide Web.Ihave been used in _ and homes since the 1970s.So I became a PC. Im happy to become a _friend and helper of the _ _. 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 fol
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