人教版必修二Unit 3《Computers》word教案

河北省康保一中英语组高一年级集体备课教案 主备课人: 殷桂雁

参加人： 王培珍 杨静慧 安秀云 马艳丽 郝康 李纬 周燕娜 备课时间： 2010年11 月17日 知识目标：

Topic：Information technology ; history and basic knowledge of computers; robots New words: calculate universal, simplify, sum, operator, logical, logically, technology

revolution artificial intelligence intelligent solve reality personal personally tube total totally network web application finance mobile rocket explore anyhow goal happiness download virus signal type coach arise electronic appearance character mop nice

Phrases; from…on as a result so...that human race in a way with the help of deal with watch over

Sentence patterns ; 1 making decisions

I think /I don’t think that… I believe that… I’ve decided that… Let’s decide…

let’s make a decision 2 Reasoning

The advantage/disadvantage is … I agree/don’t agree…because … Give me your reasons: First……second.

What makes you think so? As/since……,I think……

Grammar :现在完成时态被动语态的建构和用法 Over time I have been changed quite a lot.

First as a PC and then as a laptop , I have been used in offices and hones since the 1970s Since the 1970s many new applications have been found for me

I have also been put into robots and used to make mobile phones as well as help with medical operations 能力目标：

让学生学习用英语表达自己的观点并进行简单的理由阐述及做出决定，并能按时间先后顺序来描述某事。 情感目标：

通过本单元的学习，使学生了解计算机的发展历程及其在当今社会的广泛应用；明确高科技在当今社会发展和国际竞争的重要地位，从而激发其热爱科技，奋发进取的决心，时刻准备用自己的知识为祖国服务。

课时安排：本单元教学可分为10课时

第一课时：New words learning ;Warming up 第二课时：Pre-reading ;reading; comprehending; 第三课及第四课时：Important language points

第五课时：Learning about Language (discovering useful words and expressions)

第六课及第七课时：Learning about language (discovering useful structures );Grammar 第八课时：Speaking and Reading

第九课时：Writing, Summing up and Learning tip 第 十课时Revision and Exercises

人教版新课标必修二 unit3 Computers

The first period New words learning and warming up

学习目标： 1 语言目标：Read all the new words and phrases , paying attention to the pronunciation and stress 2 能力目标 1) Master the usage of the word “common” 2) talk about the development of computers 3课前自主学习： I 英汉互译：

1 ____________adj.共同的 2 _______________ n.发展 3_________________n. 计算机 4_____________n.机器人 5 calculator n.___________ 6. laptop n. _ 7 abacus n.___________ 8 the development of computers ___________ 9 和……有共同之处______________________________________ Suggested answers:

1.common 2. development 3. compuer 4. robot 5. 计算机 6.手提电脑 7. 算盘 8. 电脑的发展 9. have…..in common

IＩ 根据句意及首字母提示补全单词 10 The twins have a lot in c____________

11 Schools should pay more attention to the healthy d_______________ 12 Our maths teacher asked all of us to buy c____________ Answers: 10.common 11 development 12 computers Teaching procedures:

Stept 1:Learn the new words and expressions 识记下列单词的发音和同源词：

1.calculate v.计算---calculator n..计算器 2. universe n.宇宙----universal adj.普遍的，通用的 3. simple .adj 简单的，朴素的, simply adv 简单地，仅仅，简直，simplify v.简化 4. operate v.操作，手术— operator n.操作员，接线员，operation n. 操作，手术 5. logical adj. 合乎逻辑的，--- logically adv. 合乎逻辑地 ，有条理地 6. technology n. 科技，技术，----technological adj. 科技的 7. revolution 8. artificial 9. intelligent adj. 智能的，聪明的 ——intelligence n. 10. reality

11. person—personal—personally 12. tube 13. total –totally 14. apply v .应用-，申请-, application n. 用途，申请 15. mobile 16. rocket 17. explore –exploration

18. virus 19. signal 20. electricity n .电. / electrical adj. 关于电的 / electric 带电的，用电的，/ electronic 电子的 21. appear –disappear ,appearance 22. character-characteristic 23. niece

Step 2. warming up 1. lead –in

T :This unit is concerned with a little more of the history and development of computers and their applications. Computers are very important in everyday life and we need to know about them. understanding the history of computers will help us to see that there will be many changes ahed in

the development of comprters. Now look at the pictures and let’s talk about the development of computers.

2.Free talk of computers Questions:

Have ever gone surfing ?

Do you have a computer of your own ? And do you often go surfing ? What do you usually do online?

What do you think will happen if we don’t have a computer? 3. language points

1. Discuss what they have in common. have a lot / much / little / something /nothing in common with 有许多 /几乎没有/ 一些 /没有/ 共同之处 What do the two pictures have in common? 这两个图片之间有什么共同之处? 他们彼此毫无共同之处.

They have nothing in commom with one another. common people 老百姓，普通人 common sense 常识

common knowledge 总所周知的事 common interest 共同的兴趣 近义词辨析：

common 多表示”普通的;常见的;共有的”指符合或具有全体所共有的特征. normal 多表示”标准的;正常的”强调在正常范围内.

ordinary 多表示”普通的;平淡无器奇的”,强调无特别之处. usual 多表示”习惯性的;遵守常规的” general 多表示”公众的;普遍的”

1. It has become a ___________ flower. You can find it here and there.(common) 2. It is _______ to start a speech by introducing oneself.(usual )

3. Although she was rich, she was always in _________ dress.(ordinary) 4. The __________ temperature of human body is 37.(normal)

5. The ____________ public believed that it was unfair to refuse a disabled young man to

do the job.( general)

6. I haven’t a thing ____ common ____ my father.( B) A. in, about B. in , with C. on, of D. with, in 2. What do you think will be the next development? 本句中的 do you think 为插入语，插在特殊疑问句的中间，前后不必用逗号隔开，除think 外，作插入语的动词有believe , imagine suppose suggest consider say suggest 等。

注意： 1）疑问句在句中作主语时，将插入语放在疑问词后谓语动词前，其他不变，如将插入语撤走，原句式部变。Eg. Who do you think ate the cake ?

2) 疑问词在句中不作主语，将插入语放在疑问词后，think其他成分要成为 的宾语从

句，即要用陈述句语序。Eg. Why do you think she was late again ?

拓展：常见得插入语还有：I think , I hope , I guess , I ‘m afraid , I believe, you know, you see 等。这些插入语常用逗号分开。

Eg. The diet , I think , will do good to your health. 1. _______ be sent to work there?(A)

A. Who do you suggest

B. Who you suggest that should C. Do you suggest who should D. Do you suggest whom should

2. --- We haven’t heard from Jane for a long time.(C) --- What do you suppose _______ to her?

A. was happening B. to happen C. has happened D. having happened 3. _______ is going to marry Lily?(A)

A. who do you think B. Do you think so C. who you think D. Homework

1. Read the new words and expressions 2. Preview the reading part

The second period : Pre-reading ;reading; comprehending; Teaching goals:

1. To have a better understanding of the main idea of the passage. 2’.To enable the students to grasp the progress of computers Teaching procedures: Step 1. Lead-in Step 2 Pre-reading

1. Do you know in what ways computers are used today? Suggested answers:

1.) use a computer for school work 2. )play games on the computer 3.) send e-mails to friends 4. )download music and films 5. )surf the web for fun 6.) take part in chat groups

7.) use the Internet to search information for school tasks 8.) buy things on line

9.) look at photographs on the computer

10) read news both at home and abroad, read books and magazines 2. try to put the right order of page 17 Step 3 Skimming

. Who am I ? ( A computer ) Step 4. Fast reading

1. . check the answer of pre-reading (put the right order) Suggested answer :

1. calculating machine 2. analytical machine 3. universal machine 4. PC 5. laptop 6. robot 2.What is the main idea of the passage? (the development of the computer ) Step 5 Reading again

Does you think who Please fill in the table 1642 1822 1936 1940S 1960s 1970s now The computer began as a calculating machine． The “analytical machine” was made by Charles Babbage. The computer grew rapidly both in size and in brainpower The computer had grown as large as a room. The first family of computers was connected to each other. Many new applications have been found for the computer. Computers connect people all over the world together. Careful reading:

read paragraph one and complete the chart Topic sentence Supporting details 1. 2. 3. 4. 5. Read the second paragraph Topic sentence Supporting details Tubes network transistors world Wide Web small chips Read pa ragraph three and complete the chart

Paragraph two 1. These changes only become possible as my memory improved. _____________machine analytical machine universal machine pc laptop Paragraph one 1. Over time I have been changed quite a lot. Topic sentence Paragraph three 1. Since the 1970s many new applications have been found for me. Supporting details 1. cmmunications 2. finance 3. trade 4. robots 5. mobile phones 6. medical operations 7. space rockets True or false

1. Step 8 H The computer began as a calculating machine in 1742.(F) 2. The Analytical Machine was made by Charles Babbage in 1822.(T) 3. Computers had new transistors and became smaller in the 1960s.(T)

4. Alan Turing wrote a book to describe how computers could be made smaller.(F) 5. In the past people thought the computer was simple-minded.(T)

6. In the 1960s the first family of computers was connected to each other.(T) 7. Computers could share information and express their feelings.(F) 8. Computers connect people all over the world together.(T) Step 6. Summary I was born as a _ calculating machine in 1642. When I was young, I was good at____________ difficult sums. About 2 hundred years had passed before I could think _________ and produce_______ answers. At that time, I was called an ___________ machine. In 1936, I was built as a ___________ machine . I had the ability to _______any mathematical problem. From then on, I grew rapidly both in _______ and memory. After I stored my memory on __________instead of in _____. I became _______ in size but _________in intelligence. As time went by, I became even smaller, for I put my memory on a very small ______, which made me become PC and laptop.

In the 1960s, I could be connected with other computers by a ___________. From then on, I was able to share my knowledge with others through the _____ _____ ______. After that, I had many new______________. Now, I am glad to serve human beings as a ________ _________ and a pleasant ___________.

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