Unit3_Computers_教案.doc

Unit 3 ComputersPeriod 1&2, Warming Up, Pre-reading, and Reading Teaching aims 1. Knowledge aims(1) Get the students to learn the useful and expressions in this part.(2) Let students to learn about history and basic knowledge of computers.1. Ability aimsDevelop students reading abilities and let them learn different reading skills.3. Emotion aims :Arouse students great interest in learning computers and let them learn to use the computers in their daily lives.Teaching difficult and important points1. Let the students learn more about history and basic knowledge of computers.2. Get the students to learn different reading skills.Teaching methods1. Task-based teaching and learning2. Cooperative learning3. Discussion Teaching procedures and ways Step1.Warming up Task1: How much do you know about computers? (Make a survey) 1. What does IT mean?Information technology2. How to speak 科学技术 in English?Science and technology3. What does PC mean?Personal computer4. How to speak 人工智能 in English?Artificial intelligence 5. What does PDA mean?Personal digital assistant 6.How to speak 笔记本电脑 in English?Notebook computer/ laptop7. What does W.W.W mean?World wide web8. What can computers be used to do in our daily life?Task2: What is it? Give some sentences to describe different kinds of calculating objects and some pictures to help the students to guess what it is? An old calculating machine used in China until now.An abacus It is a new calculating machine which can solve a large number of mathematical problems.A calculator It is built to solve some mathematical problems. But it is too big. A huge computer It is a computer which can solve all kinds of problems and is used widely now .A PC / desktop It is a kind of computer which can be taken conveniently(方便).A laptop / notebook computerStep2.pre-reading Can you put these inventions in an order according to the time when they appeared?( ) Analytical machine（分析机）( ) Laptop( ) Calculating machine （计算机器）( ) Robotandroid( ) PC( ) Universal machine（通用机器）Step3. Reading (1) SkimmingTask 1. Find out the topic sentences of each paragraph (P19.Ex2)Task 2 .Summarize the general idea of this passage.(2) ScanningTask1. True or False1. In 1642 I began as a calculating machine and could solve any mathematical problem. (F: solve any calculating problem)2. My real father was Charles Babbage, who wrote a book and build me in 1936.(F: Alan Turning)3. After I got my new transistors in the 1960s, I became smaller but cleverer and quicker.(T)4. I was brought into peoples homes in the 1970s.(T)5. Since my birth I have been built to take the place of human race.(F: build to serve human race) (3)Careful- readingTask 1: Look at the timeline below. Fill in the blanks with information from the reading text.TimeThe development of the computers16421822The Analytical Machine was made by Charles Babbage.1940sThe first family of computers was connected to each other. 1970snow1642: The computer began as a calculating machine1822: The Analytical Machine was made by Charles Babbage.1936: The computer grew rapidly both in size and in brainpower.1940s: The computers had grown as large as a room.1960s: The first family of computers was connected to each other. 1970s: Computers were used in offices and homesNow: Computers connect people all over the world together.Step4. Conclusion of the text How did computers develop? A calculating machine _ _ _ many new applications Period 3 Vocabulary and Useful Expressionsu .common n. 1. an area of grassland with no fences which all people are free to use or a piece of open land for recreational use in an urban area (常用于专有名词中): Every Saturday Jean went riding on the village common. Harlow Common is very beautiful in winter.哈洛公园在冬天时风景很美。2. in common: in shared possession 3. out of common: unusual adj. 1. of or associated with the great masses of people: The common people in those days suffered greatly. 2. to be expected; standard: common decency. 3. common to or shared by two or more parties: common friend. 4. of no special distinction or quality; widely known or commonly encountered; average or ordinary or usual: the common man. 5. belonging to or participated in by a community as a whole; public: for the common good. 6. commonly encountered: a common (or familiar) complaint. 7. being or characteristic of or appropriate to everyday language: common parlance. 8. lacking refinement or cultivation or taste: behavior that branded him as common. 9. of low or inferior quality or value: produced.the common cloths used by the poorer population. u simple n. 1. any herbaceous plant having medicinal properties 2. a person lacking intelligence or common sense adj. 1. not elaborate in style; unornamented: a simple country schoolhouse. 2. (botany) of leaf shapes; of leaves having no divisions or subdivisions 3. having few parts; not complex or complicated or involved: a simple problem. 4. easy and not involved or complicated: a simple game.) 5. lacking mental capacity and devoid of subtlety 6. exhibiting childlike simplicity and credulity: simple courtesy.u technology n. 1. the practical application of science to commerce or industry 2. the discipline dealing with the art or science of applying scientific knowledge to practical problemsu universal n. coupling that connects two rotating shafts allowing freedom of movement in all directions: In motor vehicles a universal joint allows the drive shaft to move up and down as the vehicle passes over bumps.) adj.of worldwide scope or applicability: universal experience.u mathematical adj.1. statistically possible though highly improbable: have a mathematical chance of making the playoffs. 2. beyond question: a mathematical certainty. 3. of or pertaining to or of the nature of mathematics: a mathematical textbook. 4. characterized by the exactness or precision of mathematics: mathematical precision. 5. relating to or having ability to think in or work with numbers: a mathematical whiz.u artificial adj. 1. contrived by art rather than nature: artificial flowers. 2. not arising from natural growth or characterized by vital processes 3. artificially formal: Her husband hated the artificial humility .disagree v. 1. be different from one another 2. be of different opinions: She disagrees with her husband on many questions.u disadvantage n. the quality of having an inferior or less favorable position v. put at a disadvantage; hinder, harm: This rule clearly disadvantages me.u choice n. 1. the act of choosing or selecting: Your choice of colors was unfortunate.) 2. one of a number of things from which only one can be chosen: My only choice is to refuse. adj. 1. of superior grade: choice wines. 2. appealing to refined taste: choice wine.u material n. 1. things needed for doing or making something: writing materials. 2. information (data or ideas or observations) that can be used or reworked into a finished form: The archives provided rich material for a definitive biography.) 3. a person judged suitable for admission or employment: He was university material. 4. the tangible substance that goes into the makeup of a physical object: Coal is a hard black material. 5. artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers: She measured off enough material for a dress. adj. 1. directly relevant to a matter especially a law case: His support made a material difference. 2. concerned with or affecting physical as distinct from intellectual or psychological well-being: material needs. 3. concerned with worldly rather than spiritual interests: material possessions. 4. derived from or composed of matter: The material universe. 5. having substance or capable of being treated as fact; not imaginaryu mate n. 1. the partner of an animal (especially a sexual partner): He loved the mare and all her mates. 2. a fellow member of a team: It was his first start against his former teammates. u create v. 1. invest with a new title, office, or rank: Create one a peer. 2. create by artistic means: Create a poem. 3. bring into existence: The company was created 25 years ago. 4. make or cause to be or to become: create a furor. u move n. 1. the act of deciding to do something: He didnt make a move to help. 2. the act of changing your residence or place of business: They say that three moves equal one fire. 3. the act of changing location from one place to another: The movement of people from the farms to the cities. 4. a change of position that does not entail a change of location: Movement is a sign of life. v. 1. dispose of by selling: The chairman of the company told the salesmen to move the computers. 2. live ones life in a specified environment: She moves in certain circles only. 3. go or proceed from one point to another: The debate moved from family values to the economy. 4. arouse sympathy or compassion in: Her fate moved us all. 5. move so as to change position, perform a nontranslational motion: He moved his hand slightly to the right. 6. cause to move, both in a concrete and in an abstract sense: Move those boxes into the corner, please. 7. change residence, affiliation, or place of employment: We moved from Idaho to Nebraska. 8. perform an action, or work out or perform (an action): We must move quickly. 9. change location; move, travel, or proceed: The soldiers moved towards the city in an attempt to take it before night fell. 10. give an incentive for action: This moved me to sacrifice my career.u brain n. 1. part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord 2. mental ability: Hes got plenty of brains but no common sense. u spoil n. 1. the act of stripping and taking by force 2. the act of spoiling something by causing damage to it: Her spoiling my dress was deliberate.3. (usually plural) valuables taken by violence (especially in war): To the victor belong the spoils of the enemy. v.1. become unfit for consumption or use: The meat must be eaten before it spoils. 2. have a strong desire or urge to do something: He is spoiling for a fight. u mop n. cleaning implement consisting of absorbent material fastened to a handle; for cleaning floors v.1. make a sad face and thrust out ones lower lip: Mop and mow.) 2. to wash or wipe with or as if with a mop: Mop the hallway now.u wander v. 1. go via an indirect route or at no set pace: After dinner, we wandered into town. 2. move about aimlessly or without any destination, often in search of food or employment: The wandering Jew. 3. lose clarity or turn aside especially from the main subject of attention or course of argument in writing, thinking, or speaking: Her mind wanders. 4. be sexually unfaithful to ones partner in marriage: Might her husband be wandering? 5. to move or cause to move in a sinuous, spiral, or circular course: Sometimes, the gout wanders through the entire body.Period 4 Grammar and Useful ExpressionsTeaching IntroductionThis is the fourth teaching period of this unit. To test whether students have grasped the important and difficult language points they learned in the last period, the teacher should first offer some revision exercises. The Pattern “And my memory become so large that I couldnt believe it.” is a bit important, so special exercise should be designed.This teaching period mainly deals with the grammar: the present perfect passive voice. Firstly, the teacher can ask students to read the reading passage again, tick out the sentences in the present perfect passive voice from the reading passage and translate them into Chinese. Secondly, compare and discover the structure and usages of the present perfect passive voice by giving a lot of example sentences. Thirdly, do the exercises in Discovering useful structures on page 21 and more exercises for students to master the present perfect passive voice. Finally, summarize the present perfect passive voice.Teaching goals: Knowledge goals 1. Get students to know the structure of the present perfect passive voice.2. Let students learn the usages of the present perfect passive voice. Ability goalsEnable students to use the present perfect passive voice correctly and properly. Emotion goals1. Get students to become interested in grammar learning.2. Develop students sense of group cooperation.Teaching important pointsGet students to master the structures and usages of the present perfect passive voice.Teaching difficult pointsEnable students to learn how to use the present perfect passive voice correctly.Teaching methods1. Task-based teaching and learning2. Cooperative learning and practiceTeaching process Step 1 Revision ( 5 minutes)1. Check the homework exercises.2. Dictate some new words and expressions.3. Translate the sentences into English:1) 他太聪明了，大家都喜欢他。2) 他是一个如此聪明的男孩，以致于大家都喜欢他。3) 他取得如此大的进步，以致于老师们都对他很满意。4) 他出了太多的差错，所以考试失败了。Suggested answers:1) He is so clever that everybody likes him.2) He is such a clever boy that everybody likes him.3) He made such great progress that the teachers were pleased with him.4) He made so many mistakes that I failed the exam.Step 2 Grammar revision ( 8 minutes)1. Review the passive voice 1) 被动语态的结构：be + p.p.2) 一般现在时被动语态的结构：am/is/are (not)+p.p.3) 一般过去时被动语态的结构：was/were (not)+p.p.4）含有情态动词被动语态的结构：can/could/may/might/will/would/shall/should/must/need(not)+be + p.p.5）一般将来时被动语态的结构：will (not)/be (not) to+ be+ p.p. 2. Fill in the blank with the right form of the verb given.1) Running races (hold) on the playground yesterday.2) Food (serve) between 12:00 and 14:00 every day.3) Nobody can (allow) to enter the stadium without a ticket.4) Whoever breaks the law, he (punish).Suggested answers:1) were held 2) is served 3) will be allowed 4) will be punished Step 3 Grammar learning ( 15 minutes)1. DiscoveringAsk students to look at the exercises 1 on page 21. Look at the following sentence, paying attention to the underlined part.EXAMPLE: Over time I have been changed a lot. Ask students to go back to page 18 to read the passage Who am I ?, let them pick out the sentences in the present perfect passive voice and translate them into Chinese.Suggest answers:1) Over time I have been changed quite a lot.随着时间的逝，我已经被改变了许多。2) I have been used in offices and homes since the 1970s.自从20世纪70年代以来，我已经被应用于办公室和家庭。3) I never forget anything I have been told.我从来不会忘记告诉我的任何事情。4) Since the 1970s many new applications have been found for me.自从20世纪70年代以来，许多新的用途已经为我开发出来。5) I have also been put into robots and used to make mobilephones我也已经被装入机器人体内，并应用于制造移动电话6) I have even been put into space rockets我甚至已经被装入太空火箭2ThinkingLet students look at the tense used in the sentences they picked out and think over this question: What is the structure of the present perfect passive voice?3. Summing upThe structure of the present perfect passive voice is “have/has+ been + p.p.”. It is a combination of the present perfect tense (have/has + done) and the passive voice (be + p.p.).Ask students to turn to page 87 and look at the chart of the present perfect passive voice.现在完成时的被动语态的构成（以动词ask为例）肯定式否定式疑问式I havebeen askedYou have He/She/It hasWe haveYou have They haveI havenot been askedYou have He/She/It hasWe haveYou have They have Have I Have you been asked?Has he/she/itHave weHave yourHave they Step 4 Grammar practice ( 12 minutes)Ask students to finish the exercise 2 and 3 on page 21.Exercise 2 Change the following sentences into the present passive voice.1. My friend has bought a new personal computer.2. The shop has repaired my computer very quickly.3. An unknown virus has just attacked my computer.4. We have not solved the problem yet.5. The company has given its computers away to a local school.6. The scientists have developed a kind of intelligent robot.Suggested answers:1. A new personal computer has been bought by my friend.2. My computer has been repaired by the shop very quickly.3. My computer had just been attacked by an unknown virus.4. The problem has not been solved by us yet.5. Its computers have been given away to a local school by the company.6. A kind of intelligent robot has been developed by the scientists.Exercise 3 1. Underline the use of the present perfect passive voice in the following poem. Then fill in the chart below.Look at the way your face has been washedLook at the way your hair has been combed Look at the way your shoes have been cleanedYoud better do them again.Look at the way the flowers have been planted Look at the way the grass has been cutLook at the way the paths have been sweptI hope that youll come here again.Things that have been done wellThings that have been done badlySuggested answers:Look at the way your face has been washedLook at the way your hair has been combed Look at the way your shoes have been cleanedYoud better do them again.Look at the way the flowers have been planted Look at the way the grass has been cutLook at the way the paths have been sweptI hope that youll come here again.Things that have been d