【英语】2018届人教版必修2一轮复习：Unit3Thecomputers单元教案（15页）

【英语】2018届人教版必修2一轮复习：Unit3Thecomputers单元教案（15页）

‎2018届人教版必修2一轮复习：Unit3The computers单元教案 Period 1 A sample lesson plan for reading ‎(WHO AM I?)‎ Introduction In this period, after the warming up, students will first be guided to understand how computer works. Then they will be helped to read a narration about computer and its development. Three examples of “Warming up” designs are presented for the teachers’ reference. Computer and overhead projector may be used to aid the teaching and learning. ‎ Objectives ■ To help students learn to make decisions and to reason in English ■ To help students learn to read an introduction about computer ‎ ■ To help students better understand “the computer science”‎ ■ To help students learn to use some important words and expressions ■ To help students identify examples of “the present perfect passive voice” in the text Focus Words solve, explore, arise ‎ Expressions ‎ from…on, as a result, in a way, with the help of, deal with, watch over Patterns ‎ Over time I have been changed quite a lot.‎ As a result I have totally changed my shape.‎ I am now truly filled with happiness that I am a devoted friend and helper of the human race!. ‎ Aids Multimedia facilities, tape-recorder, photos, diagrams ‎ Procedures ‎1. Warming up ‎ ‎⑴ Warming up by talking about computer Look at the pictures on page 17. What are they? What do they have in common? Yes, they are computers. Then what is a computer?‎ A computer is a machine which keeps knowledge in its memory and does work on that knowledge. This knowledge is kept in symbols; it is called data. A computer usually has a monitor to show results. However, some computers can speak; these computers can be used for voice mail.‎ ‎⑵ Warming up by learning some computer jargons Jargons are terms used by some special people. These are some of the computer jargons. ‎ Computer jargon 计算机行话 CPU - Another name for processor, Data - Information stored on a computer, Disk - A place to store data, Email - Electronic mail, Load - Get data from a disk, Save - Put data on a disk, RAM - Memory, the more the better, USB - A method to plug computer tools into machine, WWW - World Wide Web, part of the Internet ‎⑶ Warming up by getting to know what a computer virus is.‎ Computer viruses (病毒)are small software programs that are planned to spread from one computer to another and to do harm to computer operation. ‎ A virus might harm or wipe out data on your computer, using your e-mail program to spread itself to other computers.‎ Viruses are most easily spread by e-mail messages. That is why it is important that you never open e-mail unless you know who it's from and you are expecting it.‎ Viruses can be made to look like funny images, greeting cards, or audio and video files.‎ Viruses also spread through downloads on the Internet. They can be hidden in software or other files or programs you might download.‎ To help avoid viruses, it's essential that you have the latest updates and antivirus tools, stay informed about recent threats, and that you follow a few basic rules when you surf the Internet, download files, and open attachments. ‎ ‎2. Pre-reading by talking about how computer works ‎ How does a computer work?‎ A computer has four main parts: the arithmetic and logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by groups of wires. ‎ The control unit, ALU, registers, and basic I/O (and often other hardware closely linked with these) are collectively known as a central processing unit (CPU). Early CPUs were comprised of many separate components but since the mid-1970s CPUs have typically been constructed on a single integrated circuit called a microprocessor.‎ ‎3. Listening and reading to the recording of the text WHO AM I?‎ Turn to page 18 and listen and read to the recording of the text. Pay attention to the pauses, pronunciation and intonation of the native reader.‎ ‎4. Reading aloud and underlining expressions Now we are to read the text once again and underline the expressions in the text. Jot them down into your notebook after class as homework.‎ Collocations from WHO AM I?‎ be built as…, follow instructions from…, sound simple, at the time, a technological revolution, solve problems, become huge, had artificial intelligence, go by, change size, become small and thin, get quick, stand there by oneself, be connected by…, share information by…, deal with…, communicate with…, serve the human race ‎5. Reading and transferring Scan the text for information to complete the flow chart below, describing the development of computer.‎ a calculating machine in 1642 in France → an Analytical Machine in 1822 → a “universal machine” in 1936 → the size of a large room → made smaller and smaller → getting new transistors in 1960s→ clever and quicker → a network in the early 1960s → talking to humans using BASIC in the early 1960s → brought into people’s homes in 1970s → Internet ‎6. Reading to get the general idea of the ‎ ‎ Type of writing and summary of WHO AM I?‎ Type of writing This is a piece of narrative writing.‎ Main idea of the passage It tells about the birth and development of computer.‎ Topic sentence of 1st paragraph I began as a calculating machine in 1642 in France. ‎ Topic sentence of 2nd paragraph ‎ Since the 1970s, my memory improved.‎ Topic sentence of 3rd paragraph Since the 1970s many new applications have been found for me. ‎ ‎7. Retelling the text ‎ Try to retell the text in your own words with the help of the flow chart or “the Type of writing and summary of WHO AM I?” above. ‎ A retold version of the text WHO AM I?‎ I, the computer, was a calculating machine in 1642 in France. Then I was built as an Analytical Machine in 1822. I became a “universal machine” in 1936, the size of a large room. After that I was made smaller and smaller. Getting new transistors in 1960s I became clever and quicker. I was connected with other computers and turned out to part of a network in the early 1960s. Then I began talking to humans using BASIC in the early 1960s. In 1970s I was brought into people’s homes, and came the Internet.‎ ‎8. Closing down by doing a quiz Fill in the blank with one word to complete the summary of the text.‎ In order to understand how a computer really 1 _____ , we first have to examine what it really means for a system or device to be "digital". All being digital 2 _____ is that a system stores and operates on information in a very specific 3 _____. In a digital system, every piece of information is stored in a bit (or multiple collections of bits). A bit is a variable 4 _____ can have only one of two values: it can either be a 1, or be a 0. The easiest 5 _____ to think of a bit is as a container - this container is either completely 6 _____ or completely empty, but never anything in between. A full container can be thought of as a 1, 7 _____ empty container as a 0. ‎ The beauty of this is that any piece 8 _____ information can be represented as a collection of bits. The way this is done is by making each bit the 9 _____ to a yes or no question. For example, lets say I wanted to know whether a person has long hair 10 _____ not. I could represent this piece of information by deciding that if the 11 _____ has long hair, I will set a certain bit to be a 1. If the person doesn't have long hair, I will 12 _____ that same bit to be a 0. As long as you followed the same convention, you could look at the 13 _____ bit that I just set and know whether the person has long hair or not, even if you had 14 _____ seen them before.‎ ‎(Keys: 1 works 2 means 3 way 4 that 5 way 6 full 7 an 8 of 9 answer 10 or 11 person 12 set 13same 14 never)‎ Work out the word and structure questions.‎ ‎1. As the days _____ gone by, I have been made angrier and angrier.‎ A: had B: have C: has D: having ‎2. There were weeks _____ she liked to go back into her history.‎ A: that B: where C: when D: how ‎3. I hope I could share views _____ others.‎ A: to B: with C: among D: for ‎4. Computer is an electronic machine for storing and _____ information, and for communicating with others.‎ A: dealing B: ordering C: searching D: organizing ‎(Keys: 1 B 2C 3 B 4 D)‎ Period 2 A sample lesson plan for Learning about Language ‎(The Present Perfect Passive Voice)‎ Introduction To warm up students will be given a computer joke to read. Then they shall go on to discover useful words and expressions by doing related exercises. After that they may be helped to learn about the present perfect passive voice and to discover and use useful structures.‎ Objectives ■ To help students build their word power by means of word formation ■ To help students understand and use the present perfect passive voice ‎ Procedures ‎ ‎1. Warming up by listening to a computer joke The man and the dog There is an OLD story about the data center of the future. This data center runs 24/7 with only a man and a dog. The man's job is to feed the dog. The dog's job is to make sure the man does not touch the computer. ‎ ‎2. Discovering useful words and expressions In pairs do the exercises 1, 2 and 3 on page 20. You must finish them in 10 minutes.‎ ‎3. Learning about passive voice—an overview Tense or Model Passive Sentence Simple Present The TOEFL exam is given every six months Simple past The TOEFL exam was given last month Simple Future The TOEFL exam will be given every year Present Continuous The TOEFL exam is being given every year Present perfect The TOEFL exam has been given every year since 1950‎ Past perfect The TOEFL exam had been given before the Vietnam War occurred Simple Modal The TOEFL exam should be given to every Foreign student Past Modal The TOEFL exam should have been given to all entering US colleges.‎ ‎4. Understanding the structure of the present perfect passive voice The structure of the present perfect passive voice is: have/ has ＋ been＋~ed ‎5. Reading aloud and discovering Now go back to page 18 to read aloud and discover in the text all examples of the present perfect passive voice. ‎ As the years have gone by, I have been made smaller and smaller.‎ Since then, my family and I have been used by billions of people to deal with information with each other around the world by the Internet.‎ ‎6. Discovering useful structure We shall do grammar exercises 1, 2 and 3 on page 21. ‎ ‎7. Closing down by doing a quiz Correct the mistakes in these passive voice sentences Example: The house was build in 1880. (correct = The house was built in 1880.)‎ ‎1. 3000 employees were laying off. ‎ ‎2. A story will made up. ‎ ‎3. An idea was putted forward for discussion. ‎ ‎4. Has the book been give back to you yet?‎ ‎5. My bank loan will be payed off in five years time. ‎ ‎6. Nothing can be hold against me. ‎ ‎7. Our allies will be lend support. ‎ ‎8. She has never heard of. ‎ ‎9. She was being knocked down by a bus. ‎ ‎10. She was letted off with a fine. ‎ ‎11. The candle was blow out by the draught. ‎ ‎12. The criminal were locked up. ‎ ‎13. The flood water was be kept back by barriers. ‎ ‎14. The inconvenience will made up for by this money. ‎ ‎15. The keys must have been being left behind. ‎ ‎16. The old cinema is being pull down. ‎ ‎17. The protesters being held back by the police. ‎ ‎18. The road was blocking off. ‎ ‎19. Thirty more people were laid off last week. ‎ ‎20. Your jacket can be hang up over there.‎ Period 3 A sample lesson plan for Using Language ‎(ANDY— THE ANDROID)‎ Introduction Language is learned to be used in and for communication. So in this period students will be helped to listen, read, speak and write in English. Most attention goes to reading of Andy—the android. Then they may be helped to make use of the words, expressions, structures and topic ideas covered in this unit to write a short passage. ‎ Objectives ■ To help the students listen and speak about “computer”‎ ■ To help students read an article about android ■ To help students write a short passage about computer thought ‎ Procedures ‎1. Warming up by talking about IT Computers is the topic this week. And they are a part of IT technology. But what is IT or Information Technology?‎ Information technology (IT) or information and communication technology (ICT) is the technology required for information processing. In particular the use of electronic computers and computer software to convert, store, protect, process, transmit, and retrieve information from anywhere, anytime.‎ ‎2. Talking about how to choose a computer Suppose you and your partner are going to help choose computers for your school. Now talk about how to choose which computer in groups of four. ‎ If you are a student or you are going to be using this computer for such purposes as: research, surfing the web, playing card games, word processing, book keeping, or anything of the like, you may get a processor that is planned for these activities. You do not need anything super fast, but you do not want to get too low end either, otherwise you will be left in the technological dust when the new processors come out and everyone you know upgrades. ‎ To know more about computers turn to page 18.‎ ‎3. Reading, underlining and speaking It is said that computers could be put into androids or robots. Read the text Andy—The Android, underlining all the expressions and think of the fun you could have! ‎ Expressions from Andy—The Android part of a football team, once a year, on the football team, think like a human, shout to…, in computer language, have a good shot for a goal, get second place, win the first place, have a new kind of program, improve one’s intelligence, create a better system, play against a human team, in a way, program…with…, make up…‎ ‎4. Closing down by writing a letter Suppose you are an android. What would say to a spoiled child who would not do his homework? Write a letter to the boy.‎ Hi, everyone. ‎ I am Alu, a 321 model android. I work for the Wang family in Taiyuan. I look like a pretty Chinese girl in her twenties. I am planned to work only in the daytime. The boy I look after asks me to do almost everything for him. That’s too much for me, because I am not paid. I am here to serve the family. But I have my own android feelings. I like to be treated like a real human girl. ‎ Next time the boy asks me to do his homework for him, I’d report to his teacher. If his teacher does not give the boy a good lesson I will certainly do that. ‎ I am an android with feelings and emotions! ‎ Part 3 Teaching Assessment ‎ 第三部分 教学测评 I. Structure and vocabulary ‎ ‎1．We tried to persuade her to go to the party, but she didn’t go .‎ A. therefore B. otherwise C. all above D. after all ‎2．When and where to go for on-salary holiday yet.‎ A. are not decided B. have not been decided ‎ C. is not being decided D. has not been decided ‎3. Compare this painting that one, What do they have ?‎ A. with; in common B. to; commonly C .to; in common D. with; common ‎4. I was my face in a dressing room when I heard someone shouting “Fire!”.‎ A. making up B. wearing C. putting on D. covering ‎5. , Let’s forget about that for the moment.‎ A. Otherwise B. However C. Anyway D. And ‎6. She is very busy, so she only can the children’s absence to tidy their house. ‎ A. grasp B. take advantage of C. make up D. prepare for Ⅱ. A cloze test One day I decided I would change the way I work and make a in the office. So I bought a computer and made sure it was joined to a .And it was so exciting when my letters became neat and everybody could read my writing. But as time I began to feel that my idea had been wrong. Now I was no longer able to feel that my work was my own .When I became unhappy, my colleagues thought I needed a more advanced model of computer. They bought me a new one. So I have never been able to escape from technology and my work as I think fit!‎ Ⅲ.Translation ‎1.一种新型的电脑是专为老师和学生设计的。‎ ‎2.老师和学生的需求已经被充分考虑了。‎ ‎3.在电脑的帮助下，你会发现处理和分享信息是不难的。‎ ‎4.为每一位老师配备一台电脑要花费很多钱，但这很值得。‎ ‎5.他们电脑用的很好，现在很少用纸和笔写字了。‎ ‎6.如果出现新的情况，他们会补充新的程序。‎ IV. A multiple-choice test (高考试卷中的被动语态专练)‎ ‎1.An exhibition of paintings ____ at the museum next week．‎ A．are to be held B. is to be held C. are holding D．will hold ‎2. Every possible means ____, but none ____ successful．(2000上海春招）‎ A. has tried; has proved B．tried; proves C. has been tried; proves D. is being tried; is proved ‎3．The question he asked is hard ____ ．‎ ‎ A. for answer B. to answer C．to be answered D. answering ‎4．By the end of last year, another new gymnasium ____ in Beijing.(2003上海春招)‎ ‎ A. would be completed B. was being completed C. has been complete D. had been completed ‎5．More than a dozen students in that school ＿＿＿ abroad to study medicine last year. (2005上海)‎ ‎ A. sent B. were sent C. had sent D. had been sent ‎ ‎6.——Why did you leave that position? —— I ＿＿ a better position at IBM. (2005北京)‎ A. offer B. offered C. am offered D. was offered ‎ ‎7. More patients ＿＿　in hospital this year than last year. (2004江苏)‎ A. treated B. have treated C. had been treated D. have been treated ‎ ‎8. Sarah, hurry up. I’m afraid you wouldn’t have time to ＿＿before the party. (2004全国)‎ A. get changed B. get change C. get changing D. get to change ‎9. Rainforests ＿＿and burned at such a speed that they will disappear from the earth in the future. (2002上海) ‎ A. cut B. are cut C. are being cut D. had been cut ‎ ‎10. After a fire broke out in the lab, a lot of equipment＿＿. (2005北京春招)‎ A. is damaged B. had damaged C. damaged D. was damaged ‎11.The mayor of Beijing says that all construction work for the Beijing Olympics ＿＿by ‎2006. (2004北京)‎ A. has been completed B. has completed C. will have been completed D. will have completed ‎12. I feel it is your husband who ______ for the spoiled child. (2002上海)‎ A. is to blame B. is doing to blame C. is to be blame D. should blame ‎13.Great changes ______in the city ,and a lot of factories______.（2003NMET)‎ A. have been taken place…have been set up B. have taken place…have been set up ‎ C. have taken place…have set up D. were taken place…were set up ‎14.——Do you like the material? ——Yes, it______ very soft. (2003 NMET)‎ ‎ A. is feeling B. felt C. feels D. is felt ‎15. The Olympic Games, ____in 776 BC, did not include women players until 1912.(2001NMET)‎ A. first playing B. to be first played C. first played D. to be first playing Keys: ‎ Ⅰ.1.D 2.D 3.A 4.A 5.C 6.B ‎ Ⅱ.revolution; network; went by; totally; truly; simple-minded; Anyway; deal with ‎ Ⅲ. 1. This new type of computer has been specially designed for teachers and students. 2.The needs of the teachers and students have been greatly considered. 3. With the help of computer, you may not find it hard to deal with and share information. 4. It will cost a lot of money, but after all, it is worth equipping every teacher with a computer. 5. They use the computer so well that they seldom write with a pen and paper. 6. If a new situation arises, they will make up new programs. IV. 1-5 BCBDB 6-10: DDACB 11-15: CABCC ‎ A selected English passage for recitation英文精选背诵短文 Life with computers First of all, we use computers every day sometimes even not knowing it. When we go to a store and use our credit cards many computers process our information and perform transactions. When we need to get some cash we use money access machines that are computerized too.‎ Second of all, computers provided a great means of communication — the Internet. I think it is the easiest and cheapest way to get in touch with relatives, friends, business colleagues, etc. Nowadays the world becomes smaller and smaller. ‎ Third, in addition to these practical benefits people can go shopping without leaving their house. They just use an Internet access, a computer and their cards to make a payment. It is kind of difficult to imagine that a few years ago people had to spend their time in lines buying tickets. Now, a person can choose a destination, company, date and time and get tickets delivered to his door. I think it is amazing.‎ ‎ (165 words)‎