人教版高中英语必修二学案：Unit 3 Computers Period 2 Language po

新课标人教版 Unit 3 Computers 计算机核心词汇1．Where can I____________(下载)the exercises from the Internet?2．More problems like those at the nuclear power plant are certain to____________(出现)．3．During the winter holidays，I____________(辅导)some students for English exams.4. They achieved their____________(目标)of increasing sales by five percent. 5．It is such a hard problem that it is impossible for me to____________(解决)．6．Money does not always bring____________(幸福)．7．These changes are due to an increase in the carbon dioxide in the atmosphere since the beginning of the Industrial____________(革命)．8．There is another kind of beauty that has nothing to do with____________(外貌)，but comes from the heart.9．It is just her childhood experiences that affect her____________(性格)and later life.10．After the president made an official announcement，he expressed his____________opinion.____________speaking，I agreed with his opinion.(personal) 11．I would like to____________for the job advertised in the newspaper，so I have sent my____________before July 20,2010.(apply)12．Can you say that dolphins are much more____________than other animals？Well，they are animals of high____________and they can communicate.(intelligent)1.download2.arise3.coached4.goal5.solve6.happiness7.Revolution8.appearance9.character10.personal；Personally11.apply；application 12.intelligent；intelligence高频短语1．________________ 从……时起2．________________ 结果3．________________ 如此……以致于4．________________ 在某种程度上5．________________ 在……的帮助下6．________________ 处理；安排；对付7．________________ 看守；监视8．________________ 共有；共用9．________________ 弥补10．________________ 毕竟1.from...on2.as a result3.so...that4.in a way5.with the help of6.deal with7.watch over8.in common9.make up 10.after all重点句式1．____________，I was made smaller.随着时间的流逝，我被做得更小了。

人教版高中英语必修2《Unit3Computers》教案人教版高中英语必修2《Unit 3 Computers》教案【一】教学准备教学目标1. To practise listening comprehension.2.To practise making decisions and reasoning教学重难点1. To practise listening comprehension.2.To practise making decisions and reasoning教学工具课件教学过程Step1. revision1. check the homework exercises.1). It has been reported that children will be offered free education.It has been reported that free education will be offered to children.2). It has been said that we will be offered the latest computer science course book.It has been planned that the latest computer science course book will be offered to us.3). I have been told by Peter that I will be lent his notebook computer for a week.I have been told by Peter that his notebook computer will be lent to me for a week.2. Question: What can computers be used as?Step2. Lead-inAs we know, science and technology is developing very fastand computers have become smaller and smaller. They have been used in many fields. So, the 21st century is the century of information technology What does it mean? Does information technology/ IT only mean things like computers? Of cause not. Actually, it means more than computers. Computers are just one kind of IT. What else do you know is part of IT?(TV, radio, CD-ROM, DVD, books……)Step3. Listening (SB)1. Pre-listening: What are the changes brought by different forms of IT ?What are the advantages and disadvantages of them ?2. While-listening:Go through the chart and make sure the students look at the chart before they listen to the tape. (This is to sharpen their attention and listen for the answers. This will also help them get the gist of the text.) Then Listen to the tape and finish filling in the chart. (If necessary, play the tape for several times.) Say: After listening to their talk, we know all kinds of IT have both disadvantages and advantages.Let’s check the answers together.Type of IT Advantages DisadvantagesTV You can both listen and watch. You cannot write to friends.Web You can find information. It is very expensive.Radio You can listen to English. You cannot watch a film.Book You can get information. Sometimes it is out of date.3. Post-listening:1) (pair work): decide which type of IT is best for you to use right now. Make your choice and give your reasons by using the following expressions.I think that….In my opinion, ….I believe that….I agree because….I disagree because….I’ve decided that….2) (group work): Discussion :Computers are useful and have brought us lots of good things, but they also cause bad effects. What attitude should we have towards the computer? (Make good use of it but never get trapped by it.)Step4. Speaking1. Pre-speakingSay: From what we have learn, we should admit that computers and the web have a great influence on the school education as well as people’s life. It has come into people’s everyday life and many families hold computers in their homes. Now there is a task for you.2. While-speaking1) Situation: You have been asked by your parents to help choose computers for your home. You and your friend have looked at several computers. Talk about the special things each computer can do. Make a decision about which kind of computer to buy and explain why.Information input: Show students some pictures of different computers (desktop computer & laptop computer & …) Language input: Useful expressions (Repeat it to strengthen students’ ability of use it.)Supporting an opinion Challenging an opinionI think that … , because … Perhaps, but what if / about …?First, … Have you thought about …?One reason is that … What makes you think that …?I think it is better because… I don’t like it because….(Pair work )Use the expressions to support your opinion or challenging other’s opinions.2) Oral report: (individual work )Do an oral report to your father and start your report like this: I looked at many different computers. The one I have chosen is the PEP personal computer. One of the main reasons is that it is suitable for homes. I found that…3. Post-speakingConclusion—What useful expression do we use to make a decision and reason?(In this way, they can review and use the words and phrases again.)Step6 Pre-writingSay: Imagine what problems and delights this android might have to deal with while it is serving you. Try yourself in someone else’s shoes is an important way of understanding how other people feel.Then discuss: You are an android. You work for a family with one child who is very spoiled. The parents want you to do everything for them. The parents are nice, but they often ask you to watch over their child. How do you feel? What would you do if the child asked you to do his/her homework for him/her? Would you ever tell the chi ld “no”?Step7 WritingSay: Write a passage about the result of your discussion! It should contain:What do you have to do?What is the child like?What is the parents’ requirement of the child?What do the parents want you to do?What does the child want you to do?Then what will you do? How do you feel?Sample writing:Hello everybody, my name is Liu Yan.I am a 321 model android.I work for the Li family. Mr and Mrs Li work very hard too.Mr Li is an architect and designs great tall apartment blocks.Mrs Li is a doctor and has to look after many patients.I remember all the plans for Mr Li's projects and can tell Mrs Li which drugs are the best to give any particular patient. And I also look after their library. I store all the books that they borrow from their school or friends in my brain.Of course my brain is as large as a mountain, so work like that is no trouble to me.I really eat books just like people eat food.The Lis have a child who is very spoiled. He needs me to remember all his school textbooks so that I can do his homework for him.He just gives me the information on the subject, what has to be done and the page numbers and I get on with it while he enjoys himself with his friends.Sometimes I don't think it is right to do his homework for him — it's somewhat cheating. However, his parents are very concerned at the pressure of work in school these days.The child has too much homework to do. They like him to go to the key school but they also want him to be able to have hobbies, learn to swim and keep fit! Poor child!So they consider me the most important person in the family after themselves.I am always introduced to their friends and play with visiting children.I am the perfect family academic aid and, although I was not cheap to buy, Mr Li says I was worth every yuan!Step8 AssessmentGet the students to assess their writing ability according to the following the questions:1. Is your composition well developed?2. Are your ideas well organized to the point?3. Do you have a good choice of words and idioms in your writing?4. Do you get a good mastery of complex structures of language?5. What kind of mistakes have you made in your writing?Step9: HomeworkWrite about your discussion. You may begin like this:Hello, everyone. My name is ___. I’m 321 m odel android. I work for the Li family….课后小结学了这节课，你有什么收获?课后习题完成课后习题一、二。

山东省泰安市肥城市第三中学高一英语人教版必修2《Unit 3Computers》word学案1、.personal adj. 私人的；个人的；亲自的根据我个人的意见，你不应该投他的票。

_______________________________________________________________The president made a personal apperance at the event._______________________________________________________________拓展词汇：person ally adv._______________ person n._______________pers onality n.____________________2. anyhow adv. 也作anyway 无论如何；即使如此Anyhow, let’s hurry. _____________________________________________ 无论如何，你也不应该放弃。

______________________________________________ 3、as a result 作为结果；因此as a result of 作为…的结果；由于He didn’t work hard,as a result he failed his exam._____________________________________________________________这经常不下雨，因此我们不得不给菜园浇水。

It doesn’t often rain here._________________________________________拓展：result in ___________ result from____________The accident resulted in three deaths. ________________________________This kind of disease resulted from the pollution._______________________4.in a way 在某种程度上The change is an improvement in a way. ___________________________________ 从某种方面来说，你是对的。

必修Ⅱ Unit 3 Computers 教学案班级姓名小组号【学习目标】1.学生利用早读以及课下时间自学单词，能够熟练读出背出本单元考纲词汇及短语。

2.学生背诵并且能够默写出课标词汇及其相关拓展。

【重点难点】1.重点：熟练记忆课本词汇及相关短语。

2.难点：能运用所学单词和短语写出正确的句子。

【学情分析】学生通过自主学习和小组讨论能够总结出词汇的相关用法，在做题过程中发现并解决一些易出错的语法细节。

【导学流程】自主学习内容一回顾旧知application n. 应用；用途；申请be considered ；As time went by .........二基础知识感知：She programs us with all the possible moves she has seen while watching human games. “while watching human games”为时间状语从句的省略形式，补充完整为while she is watching human games。

他做作业时睡着了。

He fell asleep __________________________________________.三.探究问题I would really like to play against a human team, for I have been programmed to act just like them.(教材P23)for是并列连词，表示“因为”，放在句中，用逗号与前面隔开。

我不想去购物，因为现在正下雨呢。

I don't want to go shopping，__________________________________________.四、基础知识拓展give back 归还；返回；恢复give away 捐赠；赠送；分送；颁发；泄露；暴露give in 呈交；屈服；让步give out 分发；耗尽；公布，宣布；发出(光、热或信号)give up 放弃；投降give way to 让……先行；被……代替与迁移：请及时记录自主学习过程中的疑难：小组讨论问题预设:(1)in a way＝in one way在某种程度上(2)相关短语：in the/one's way 妨碍；挡道in this/that way 用这种/那种方式in no way 绝不on the/one's way 在路上；即将到来by the way 顺便说/问一下①The rainy weather helped me in___________way, which gave me a good excuse to refuse to go to this party or that.②There was a big truck in___________ way.提问展示问题预设：课文中的知识点及重难点词汇短语课堂训练问题预设：①The headmaster____________________the prizes at the school sports day.校长在校运动会那天颁发了奖项。

Unit 3 ComputersI.Lead in (7 min)1.The name of each part of a computer.2. Brainstorming: What can a computer do?II. Before reading (3 min)Look at the pictures, the title and the sub-headings of the article on page 35. Then tick (✓) the facts that the article probably talks about.1. Computers are getting smaller and better. ( )2. Computers can do important jobs like flying planes. ( )3. Computers may work as doctors. ( )4. Computers are expensive. ( )III. While reading (20 min)1.Scanning (3 min)2. Skimming (17 min)(1). Read the first part of the article and complete the mind map.Part 1: Smaller and betterComputer factsPart 1Part 2Part 3The __________ of computers in different timesThe _________of computers in daily lifeThe __________ between humanbeings and computers in the future(2). Read the second part of the article and complete the mind map below.Part 2: what can we do with computers?(3). Read the third part of the article and answer some questions.① Is a computer clever than you? Why?②Is it possible that a computer can do a better job than human beings?③What job may computers be better at?④What will happen to us if computers can do all of our jobs?V. Post reading (10 min)1. Retell the reading (5 min)2.Free talk (5 min)①Do you think the computer is good for us or bad for us? Why?②How can we use computer in a right way?。

Book2 Unit3 Computers课后复习学案Warming up-Reading学习目标：1、通过对计算机阅读课文的学习，课后巩固计算机的发展历程及其在当今社会的广泛应用。

2、鼓励学生找出文章文章结构，文章框架，和文章要点，进行信息重组。

3、深入了解说明文的写法，学会按时间的先后顺序说明描述一件事。

4、使学生了解和掌握现在完成时的被动语态的用法。

对文本进行深层阅读，用思维导图模式对文章信息重组。

Reading one注意下列词组在文中的应用：a calculating machine 计算机器an analytical machine 分析机a technological revolution 科技革命artificial intelligence 人工智能a universal machine 通用机器the World Wide Web 万维网I语篇解读：I. Fast reading: Read the passage and find out the topic sentence of each paragraph.Para1: _____________________________________________________________________ Para2: _____________________________________________________________________ Para3: _____________________________________________________________________II. Second reading. Read the passage for the second time and finish the following exercises. Task 1. Choose the best answer to each question according to the text.1. Look at the pictures and the title of the passage. Predict what it is going to be about._______A. the importance of computers.B. the applications of current computersC. the development of computersD. the future of computers.2. What can you infer from the text? __________A. the computer has artificial intelligenceB. the computer changes a lot over yearsC. the computer was not connected by a network until in the early 1960sD. now the computer can only be used to deal with informationTask 2. Read the passage and finish the timeline below.1642: Computers began as a ____________ machine in _____________.1822: The ___________ machine was made by Charles Babbage.1936: Computers grew rapidly both in ____________ and in ___________.1940s: A computer grew as large as a _____________.1960s: The first ____________ of computers was connected to each other.1970s: Computers were used in _____________ and in ______________.Now：Computers connect people all over the ____________.III.Analyze some important sentences and translate them.1.①Over time I have been changed quite a lot.②Over time my memory has developed so much that, like an elephant, I never forgetanything I have been told!③I have been put into robots and used to make mobile phones as well as help with medical operations.此三句中都包含了一个共同的时态是_____________________,它的基本结构是___________________1.④I developed very slowly and it took nearly two hundred years before I was built as ananalytical machine by Charles Babbage.⑤At that time it was considered a technological revolution and the start of my “artificial intelligence”.认为某人/某物…____________________________________⑥From then on, I grew rapidly both in size and in brainpower.⑦But I was always so lonely standing there by myself, until in the early 1960s they gave me a family connected by a network.standing there by myself在句中作__________________ connected by a network在句中作_____________⑧I was able to share my knowledge with others through the World Wide Web.⑨Anyhow, my goal is to provide humans with a life of high quality.⑩. I am now truly filled with happiness that I am a devoted friend and helper of the humanrace!IV. Find out the following phrases in the passage and try to recite them.1.有共同之处_________________________2. 把…和…相比____________________3. 经过一段时间_______________________4. 从那时起______________________5. 随着时间的推移_____________________6. 结果__________________________7. 如此…以至于… _____________________ 8. 独自地，单独地__________________9. 与…分享…_________________________ 10. 和，也_____________________11. 为某人提供某物_____________________ 12. 高质量的生活___________________ 13. 充满_________________________VReading one拓展提升学案Read the whole passage and fill in the blanks.Over time I have been changed quite a lot. I began as a(n ) ______ machine in 1642 in France. Then in 1822 I was built as a(n) ______ machine. My real father, Alan Turing, built a(n) “______ machine” to solve any ______ problem in 1936. Since I was huge at that time, people thought I was ______. As the years have ______ by, I have been made smaller and smaller.There were times when my size was _______ changed. I became smaller and thinner but I got cleverer and cleverer. In the early 1960s, I was given a family _______ by a network. Since I was brought into people’s homes, my family and I have been used to _______with information and communication each other around the world. I have ______ been built to serve the human race since my birth.。

Unit 3 ComputersLearning about LanguageThe General Idea of This Period：This period includes revision of the text、learning about language.From this period the students will learn how to use some of the key words and expressions in the text and do some exercises for consolidation，and learn how to use the Present Perfect Passive Voice.Teaching Aims：1.Help the students to learn to use some useful words and expressions.2.Enable the students to learn how to use the present perfect passive voice.Teaching Important Point：The use of the present perfect passive voice.Teaching Difficult Points：How to master the usages of some important words and phrases and the Present Perfect Passive V oice.Teaching Methods：1.Task-based learning.2.Cooperative learning.3.Explanation and practice.Teaching Aids：1.A tape recorder.2.A multimedia.Teaching Procedures：Step 1 RevisionT：Boys and girls，in last period we learned something about the history and development of computers.Now who would like to retell the text with the help of these figures?S1：Let me try.In 1642，a calculating machine was used in France.Then in 1922，the Analytical Machine was made by Charles Babbage.It could follow instructions from cards with holes.In 1936，Alan Turing，the real father of computers，wrote a book to describe how computers could be made to work and built a “universal machine”to solve any mathematicalter，people discovered the computer had “artificial intelligence”.In the 1960s，the computer got his new transistors.Its size was totally changes at that time.And in the early 1960s，the first family of computers were connected to each other.In 1970s，computers have brought into people’s homes.Now computers have been used by billions of people to deal with information and communicate with each other around the world by the Internet.T：Congratulations!You’ve done very well.Now try to do the same to your partners，OK!Step 2 Words and ExpressionsTask 1T：Please turn to Page 19 and finish Discovering Useful Words and Expressions.At first，look at Ex.1.From the reading passage，find the words and expressions with the following meanings.Now，ten students will be asked to give the words.Who can?V olunteers!Check the answers together.Task 2.T：Well done.Now please look at Ex 2.and complete the passage with some of the words above.Pay attention to the use and the forms of those words.The possible answers：network so that went by totally truly simple-minded Anyway deal withTask 3T：Please finish Ex.3.Look at the sentences on Page 20.Tick the right word.Then some of you will be asked to read the sentences one by one.The possible answers：1.Life totally changed when I went to university.2.I was amazed to find that I won the competition to design a new computer.3.The competition was so exciting that we cheered all evening.4.I was so excited at the thought of meeting Yang Liwei that I could not sleep.5.Robots can be bought so cheaply that I gave one to each of my friends.6.It was so unlucky that you lost your watch at the concert.Task 4T：Please turn to Page 56 and let’s finish Using Words and Expressions.First look atEx.1.Read through the words in the right-hand box e some of them to name each part of a computer in the left-hand box.We have known about computer.But who can give us the exact names?The possible answers：1.floppy disc2.hard disc3.scanner4.modem5.CD-ROM6.monitor7.keyboard8.printerTask 5T：Now please look at plete the sentences with some of the words in the right-hand box above.You can use each word only once.First do the exercise individually，and then check your answers with your partners.And last seven students will be asked to report their answers to the class.The possible answers：1.A printer is a machine for printing text or pictures onto paper，especially once connected toa computer.2.A CD-ROM or disk is the main device that a computer uses to store information.3.A monitor is used to see your data on a computer.4.A keyboard is used to put data into a computer.5.A CPU is often used to connect computers to each other through phone lines.6.Data can also be stored in a floppy disc，which is small and can be carried easily.7.A hard disc is a disc that contains computer data.It can store a large amount of data.Step 3 Grammar—The Present PerfectPassive V oiceT：Boys and girls，now please pay attention to the following sentences in the text：1.As the years have gone by，I have been made smaller and smaller.2.Since then，my family and I have been used by billions of people to deal with information and communicate with each other around the world by the Internet.3.I have truly been built to serve the human race since my birth.T：What verb tense is used in these sentences?And what verb voice is used in these sentences?Yes，the present perfect passive voice is used in these sentences.Can you tell us the structure of the present perfect passive voice?Quite right.The structure of the present perfect passive voice is “subject＋have/has been done＋object”.The function of present perfect passive voice is indicating verbs’the present perfect and the passive voice.OK，let’s practise the present perfect passive voice.Task 1T：Please turn to Page 20.Let’s finish Discovering useful structures.At first，look at Ex.2.According to examples，change the following sentences into the present perfect passive voice.Put the verbs into the correct form.Suggested answers：1.A new personal computer has been bought.2.Many problems have been found with our new computer.3.A PC has been built the way we wanted.4.Our computer has just joined to the Internet.5.The computer has been used every day since we bought it.6.A lot of e-mails have been written on the computer in the last year.Task 2T：Class，let’s play a game called “What has been decided”.Now，get into groups of four.Y our task is to decide what things have been decided for the class.Take turns to make the ideas as interesting and lively as you like.Y ou may finish them according to EXAMPLES on Page 21，（or finish Ex.3 after class.）Then collect the ones you all like best and be prepared to tell them to the class.Suggested answers：S1：It has been decided that those who know of the computer will be asked to say something in class.S2：It has been decided that those who didn’t clean the blackboard will be asked to come into office after school.Task 3T：Now，please turn to Page 57.Finish using structures.First，look at Ex.1 and change the following sentences according to the model，and pay attention to the passive voice form.First do the exercise individually，and then check your answers with your partners.After that we’ll check the answers in class.Step 4 HomeworkT：OK，it’s almost time for a break.Now look at Ex.2 on Page 57.Translate the following sentences into English after class.The words and expressions in brackets may help you.Step 5 The Design of the Writing on the BlackboardUnit 3 ComputersPeriod 2The Present Perfect Passive V oice1.As the years have gone by，I have been made smaller and smaller.2.Since then，my family and I have been used by billions of people to deal with information and communicate with each other around the world by the Internet.3.I have truly been built to serve the human race since my birth.Structure：“subject+have/has been done+object”Step 6 Record after Teaching。

Period 2 Learning about LanguageThe General Idea of This Period：This period includes revision of the text、learning about language.From this period the students will learn how to use some of the key words and expressions in the text and do some exercises for consolidation，and learn how to use the Present Perfect Passive V oice.Teaching Aims：1.Help the students to learn to use some useful words and expressions.2.Enable the students to learn how to use the present perfect passive voice.Teaching Important Point：The use of the present perfect passive voice.Teaching Difficult Points：How to master the usages of some important words and phrases and the Present Perfect Passive V oice.Teaching Methods：1.Task-based learning.2.Cooperative learning.3.Explanation and practice.Teaching Aids：1.A tape recorder.2.A multimedia.Teaching Procedures：Step 1 RevisionT：Boys and girls，in last period we learned something about the history and development of computers.Now who would like to retell the text with the help of these figures?S1：Let me try.In 1642，a calculating machine was used in France.Then in 1922，the Analytical Machine was made by Charles Babbage.It could follow instructions from cards with holes.In 1936，Alan Turing，the real father of computers，wrote a book to describe how computers could be made to work and built a “universal machine”to solve any mathematical ter，people discovered the computer had “artificial intelligence”.In the 1960s，the computer got his new transistors.Its size was totally changes at that time.And in the early 1960s，the first family of computers were connected to each other.In 1970s，computers have brought into people’s homes.Now computers have been used by billions of people to deal with information and communicate with each other around the world by the Internet.T：Congratulations!You’ve done very well.Now try to do the same to your partners，OK!Step 2 Words and ExpressionsTask 1T：Please turn to Page 19 and finish Discovering Useful Words and Expressions.At first，look at Ex.1.From the reading passage，find the words and expressions with the following meanings.Now，ten students will be asked to give the words.Who can?V olunteers!Check the answers together.Task 2.T：Well done.Now please look at Ex 2.and complete the passage with some of the wordsabove.Pay attention to the use and the forms of those words.The possible answers：network so that went by totally truly simple-minded Anyway deal withTask 3T：Please finish Ex.3.Look at the sentences on Page 20.Tick the right word.Then some of you will be asked to read the sentences one by one.The possible answers：1.Life totally changed when I went to university.2.I was amazed to find that I won the competition to design a new computer.3.The competition was so exciting that we cheered all evening.4.I was so excited at the thought of meeting Yang Liwei that I could not sleep.5.Robots can be bought so cheaply that I gave one to each of my friends.6.It was so unlucky that you lost your watch at the concert.Task 4T：Please turn to Page 56 and let’s finish Using Words and Expressions.First look at Ex.1.Read through the words in the right-hand box e some of them to name each part of a computer in the left-hand box.We have known about computer.But who can give us the exact names?The possible answers：1.floppy disc2.hard disc3.scanner4.modem5.CD-ROM6.monitor7.keyboard8.printerTask 5T：Now please look at plete the sentences with some of the words in the right-hand box above.You can use each word only once.First do the exercise individually，and then check your answers with your partners.And last seven students will be asked to report their answers to the class.The possible answers：1.A printer is a machine for printing text or pictures onto paper，especially once connected to a computer.2.A CD-ROM or disk is the main device that a computer uses to store information.3.A monitor is used to see your data on a computer.4.A keyboard is used to put data into a computer.5.A CPU is often used to connect computers to each other through phone lines.6.Data can also be stored in a floppy disc，which is small and can be carried easily.7.A hard disc is a disc that contains computer data.It can store a large amount of data.Step 3 Grammar—The Present PerfectPassive V oiceT：Boys and girls，now please pay attention to the following sentences in the text：1.As the years have gone by，I have been made smaller and smaller.2.Since then，my family and I have been used by billions of people to deal with information and communicate with each other around the world by the Internet.3.I have truly been built to serve the human race since my birth.T：What verb tense is used in these sentences?And what verb voice is used in these sentences?Yes，the present perfect passive voice is used in these sentences.Can you tell us the structure of the present perfect passive voice?Quite right.The structure of the present perfect passive voice is “subject＋have/has been done＋object”.The function of present perfect passive voice is indicating verbs’ the present perfect and the passive voice.OK，let’s practise the present perfect passive voice.Task 1T：Please turn to Page 20.Let’s finish Discovering useful structures.At first，look at Ex.2.According to examples，change the following sentences into the present perfect passive voice.Put the verbs into the correct form.Suggested answers：1.A new personal computer has been bought.2.Many problems have been found with our new computer.3.A PC has been built the way we wanted.4.Our computer has just joined to the Internet.5.The computer has been used every day since we bought it.6.A lot of e-mails have been written on the computer in the last year.Task 2T：Class，let’s play a game called “What has been decided”.Now，get into groups of four.Y our task is to decide what things have been decided for the class.Take turns to make the ideas as interesting and lively as you like.You may finish them according to EXAMPLES on Page 21，（or finish Ex.3 after class.）Then collect the ones you all like best and be prepared to tell them to the class.Suggested answers：S1：It has been decided that those who know of the computer will be asked to say something in class.S2：It has been decided that those who didn’t clean the blackboard will be asked to come into office after school.Task 3T：Now，please turn to Page 57.Finish using structures.First，look at Ex.1 and change the following sentences according to the model，and pay attention to the passive voice form.First do the exercise individually，and then check your answers with your partners.After that we’ll check the answers in class.Step 4 HomeworkT：OK，it’s almost time for a break.Now look at Ex.2 on Page 57.Translate the following sentences into English after class.The words and expressions in brackets may help you.Step 5 The Design of the Writing on the BlackboardUnit 3 ComputersPeriod 2The Present Perfect Passive V oice1.As the years have gone by，I have been made smaller and smaller.2.Since then，my family and I have been used by billions of people to deal with information and communicate with each other around the world by the Internet.3.I have truly been built to serve the human race since my birth.Structure：“subject+have/has been done+object”Step 6 Record after Teaching。

Unit 3 Computers类别 话题词汇词组、 短语功能语法随堂练习教学目的和要求〔〕Information technologyhistory and basic knowledge of computers robotscalculate calculator PC notebook common analytical simple simple-minded technology technological revolution universal mathematical artificial intelligence anyway totally network truly race birth IT advantage disadvantage type disagree choice material personally create coach move arise brain mop wanderin common in one ’s opin ion go by so ... that ... deal with humanrace in a way make up with the help of after all watch over1. 做出决定〔 Making decisions〕I think that ... In my opinion ... I believe that ...Let ’ s make our decision.I ’ ve decided that ...2. 推理〔 Reasoning 〕The advantage/disadvantage is ...What ’s your reason? Why do you think so?I think this one is better because ...I don ’t like this one because ...现在完成时的被动语态结构和用法I have been made smaller and smaller.I have been used by millions of people.I have truly been built to help the human race.1、 Go over the story and discuss with your partner who the speaker is in thisstory.Now write down three sentences from the story to support your idea. It is a computer because it describes ：Itselfas the analyticalmachine designed by CharlesBabbage 〔 which was the firstdesign of a computer 〕. Then in 1822 I was builtas an AnalyticalMachine by CharlesBabbage.Alan Turing as its real father 〔 and he designed thefirstreal computer 〕 . “ Myreal father was Alan Turing ...〞Having artificial intelligence〔 which only computers have 〕 . People have naturalintelligence.“ However, people thoughtI was simple-mindeduntilthey discoveredI had ‘artificial intelligence’ . 〞课程标准要求掌握的工程 ；Teaching aims and demands2、 Look at the timeline below.Fillin the blanks with information from the reading above.Timeline1642： The computer began as a calculating machine.1822： The Analytical Machine was made by Charles Babbage.1936： Alan Turing wrote a book to describe how computers could be made.1960s：Computers had new transistors and became smaller.1960s：The first family of computers was connected to each other.1970s：Computers were brought into people’ s homes.Now： Computers connect people all over the world together.课堂笔记1、 I know this sounds very simple,but at that time it was a technological revolution.我知道这听起来很简单，但是在那个时候这却是一项技术革命。