unit3computers教案

1、广州市白云区成龙中学2015学年第一学期牛津版八年级上册英语教案Unit 3 ComputersPeriod 1教学内容：Getting ready(p.33), Reading(pp.34-35), Vocabulary C1,C2(p.36)教学目标：语言知识：1. 认读和理解单词：brain,keyboard,monitor,mouse,speaker,calculate,control,depend,operate,type,railway,tiny，以及短语depend on , in addition, (be) unaware of, work as等：2. 初步了解文章大意，了

2、解电脑在人类社会中的重要作用。语言技能：1. 能用英语说出电脑相关配置的名称；2. 能通过阅读文章的小标题了解文章的大致内容。情感态度：增强对新鲜事物的求知欲，努力探索不断发展中的信息技术。教学重点：认读和理解与“电脑”话题的词汇。教学难点：根据上下文语境猜测词义。Teaching procedures:Step 1 Pre-reading A. What do you know about computer? (Read the Getting ready and talk about the topic of this unit,then answer the following ques

3、tions.)1. Do you have a computer at home?2. What do you usually do with it?B.Before you read(How much do you know about computers? Look at the photo below and complete the sentences with the correct names.)1 .The _ shows words and pictures.2 .We use the _ for typing.3 .The “brain” of a computer is i

4、n the _.4 .We move the _ to control the computer.5 .We hear sound from the _.(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 job

5、s like flying planes.( )3 .Computers may work as doctors.( )4 .Computers are expensive.( )Step 2 Vocabulary1. Can you write more words about computers(有关电脑的词汇)? Computer2. C1 The words in italics explain the meanings of some words on page 35. Find these words to complete the sentences. Change their

6、forms if necessary.1. If something is very small, it is _. (line 5)2.Some young people always need help from their parents. They should learn to _ themselves. (line 8)3.We had fun and learnt something new as well. We had a good time. _, we learnt a lot. (line 14)4.When we make a machine work, we _ i

7、t. (line 16)3. C2 Complete the conversation below with the words from the box.depend on expensive In addition speedMark:I bought a new computer.Helen: Why?Mark:I bought my first computer five years ago. I used it almost every day, and it became really slow.Helen: I see. So hows your new computer?Mar

8、k:It was really _, but it works at a must faster_ than my old one. _, it has a larger monitor. Helen:I also _ my computer a lot these days. I use it to write reports, and to get on the Internet too. My computer Works well , so Im not going to buy a new one. Step 3 Post-readingD1 Read the article on

9、page 35 and complete the answers with the example from the article.1 S1: There may be tiny computers in your home. S2： where，for example？ S1：Inside your _ or _.2 S1: We can do many things with computers in our daily life. S2: For example? S1: We can _,_ and_with hem.3 S1: Computers can do some impor

10、tant jobs. S2: For example? S1: They can _and_.4 S1: One day, computers may be able to do a better job than human beings. S2: For example? S1: They_.Step 4 Homework1.抄写单词和短语：monitor， speaker， main unit，keyboard，mouse，type，brain，control，expensive，tiny，depend，calculate，speed，operate，railway， work as，(

11、be) unaware of，depend on，in addition等。 2.思考：除了银行的ATM机，电脑还被广泛运用于日常生活中的哪些领域？ 3.熟读课文。Reflect:Unit 3 ComputersPeriod 2教学内容： Reading, language points教学目标：语言知识：1. 深入学习课文中的语言知识；2.能够用中文译出文章的意思。语言技能：1.能够灵活运用所学的语言知识；2.能够有感情的流利地朗诵课文。情感态度：深入理解电脑与人之间的关系。教学重点：深入学习课文中的语言知识。教学难点：能够灵活运用所学的语言知识。Teaching procedures:St

12、ep 1 Review the wordsRead the words together.Step 2 Translate the reading1. Listen to radio part by part. Smaller and better What can we do with computers? Is a computer cleverer than me?2. Read the reading part by part. Smaller and better What can we do with computers? Is a computer cleverer than m

13、e?3. Ask student translate the reading part by part.Step 3 Learn the language points1.Now computers are becoming smaller and better.比较级+ and +比较级 表示“越来越”，常与become/get连用。2.You may be unaware of them.unaware 是形容词，意为“未察觉的；不知道的”，常见的搭配有 be unaware of sth/sb.unaware 由前缀un-加aware 构成。前缀un-意为“不；无；非”，常放在一些形容词

14、、副词和名词之前，构成该词的反义词。例如：unfair 不公平的3.In addition, computers can do important jobs . 除此之外，电脑还能做重要的工作短语in addition 常用作副词，意为“除以外(还)”，相当于besides，两者可以互换使用。in addition 在句中常单独使用，放在句首。例如：他钢琴弹得好，除此之外，他还能唱歌。He can play the piano well. In addition / Besides, he can sing. 【拓展】in addition to . 意为“除了 之外(还)”，后面常接名词、代

15、词或动词ing，可与besides互换使用，常放在句子中间。例如：除了英语之外，我还喜欢化学。 I like Chemistry in addition to / besides English. 4. What will happen to us if computers can do all our jobs?happen 意为“(偶然)发生”，常用所发生事情的名词或代词作主语，可与take place 互换使用；与介词to 构成动词短语，意为“发生在身上”。故事发生在1990年6月。 The story happened / took place in June, 1990. 昨天他出了

16、车祸。 A traffic accident happened to him yesterday. Step 4 Practice1. Finish the practice on page 44.(阳光学业评价)2. Check the answer.Step 5 Homework1.完成英语周报第9期第三版reading部分； 2.记前10个单词；3.A层同学背文章第一部分。Reflect:Unit 3 ComputersPeriod 3教学内容： Grammar教学目标：语言知识：1. 学习形容词比较级和最高级的含义；2. 懂得形容词比较级和最高级的用法。语言技能：1. 能正确运用形容词

17、比较级和最高级来比较两者或以上的人或事物等。2. 通过发现语言、学习语言，最终能运用语言。情感态度：增强合作学习、互相帮助的意识。教学重点：学习形容词比较级和最高级的含义。教学难点：懂得形容词比较级和最高级的用法。Teaching procedures:Step 1 Discovering the language1.In the 1940s,the first computers were bigger than cars.2.Now computers are becoming smaller and better.3.You depend on computers more than y

18、ou realize.4.Is a computer cleverer than me?5.For example,they may be better than doctors at doing their jobs.Find out:_Step 2 Learning the language1. Check the result of discussion.2. The comparative of adjectives and The superlative of adjectives a. fast-faster-fastest b.nice-nicer-nicest c.heavy-

19、heavier-heaviest d.big-bigger-biggest eresting-more interesting-most interesting f.good-better-best 3. Summer the rules单音节和少数多音节词比较级和最高级的规则变化：规则原级比较级最高级1.直接在词尾加-er/-esttalltallertallest2.大多数以e结尾的形容词，加-r/-stnicenicernicest3.以辅音字母加y结尾的形容词，先把y改为i，再加-er/-esthappyhappierhappiest4.重读闭音节词尾只有一个辅音字母时，双写

20、该辅音字母，再加-er/-estthinthinnerthinnest其他双音节词或多音节词，在该词前面加more/most.例如：beautiful-more beautiful-most beautiful;useful-more useful-most useful.不规则变化原级比较级最高级good/wellbetterbestbad/badlyworseworstmany/muchmoremostlittlelessleastfarfarther 较远farthest 最远further 进一步 furthest 最大程度oldolderoldesteldereldestStep 3

21、 Use the language1.原级的常用句型：a.程度副词very, too, so, quite等修饰形容词的原级，如：very tall、 too hot、 so cold The car is quite/very cute.b.as+adj.+as 和.一样 as funny as as big as as happy as as smart as否定形式： not as+adj.+as 和 不一样The story is as interesting as that one.The question is not as difficult as that one.2. 比较级

22、的常用句型： a.比较级+than This cake is more delicious than that one. b.倍数 + 比较级+than . This garden is 9 times larger than that one. c.the +比较级+of the two Amy is the shorter of the two.3.最高级的常用句型：（三者或三者以上） a.the+最高级+of/in Shanghai is the largest in China. b. One of+the+最高级+名词复数“最的之一” One of the most importan

23、t languages is English. c. the+序数词+最高级+单数名词+in短语 “在中是第几个” China is the third largest country in the world.Step 4 Homework1. 熟记形容词的比较级和最高级的构成方式。2. 完成英语周报第10期第三版的Grammar部分。Reflect:Unit 3 ComputersPeriod 4教学内容： Grammar 教学目标：语言知识：懂得运用形容词比较级和最高级的用法。语言技能：1.能正确运用形容词比较级和最高级来比较两者或以上的人或事物等。2.通过发现语言、学习语言，最终能运用

24、语言。情感态度：增强合作学习、互相帮助的意识。教学重点：懂得运用形容词比较级和最高级的用法。教学难点：灵活运用形容词比较级和最高级的用法。Teaching procedures:Step 1 Review the grammar rulesLet students recall the following rules together.单音节和少数多音节词比较级和最高级的规则变化：规则原级比较级最高级1.直接在词尾加-er/-esttalltallertallest2.大多数以e结尾的形容词，加-r/-stnicenicernicest3.以辅音字母加y结尾的形容词，先把y改为i，再加-er/

25、-esthappyhappierhappiest4.重读闭音节词尾只有一个辅音字母时，双写该辅音字母，再加-er/-estthinthinnerthinnest其他双音节词或多音节词，在该词前面加more/most.例如：beautiful-more beautiful-most beautiful;useful-more useful-most useful.不规则变化原级比较级最高级good/wellbetterbestbad/badlyworseworstmany/muchmoremostlittlelessleastfarfarther 较远farthest 最远further 进一步

26、 furthest 最大程度oldolderoldesteldereldestStep 2 Review the language1.原级的常用句型：a.程度副词very, too, so, quite等修饰形容词的原级，如：very tall、 too hot、 so cold b.as+adj.+as 和.一样 as funny as as big as as happy as as smart as否定形式： not as+adj.+as 和 不一样3. 2.比较级的常用句型： a.比较级+than . b.倍数 + 比较级+than . c.the +比较级+of the two 3.

27、最高级的常用句型：（三者或三者以上） a.the+最高级+of/in b. One of+the+最高级+名词复数“最的之一” c. the+序数词+最高级+单数名词+in短语 “在中是第几个” Step Practice the language1.写出下列词的比较级和最高级。important _ _ easy_ _ wet_ _ happy_ _ careful _ _ thin _ _ good_ _ hot _ _ easily _ _ many_ _ nice _ _ big _ _heavy_ _delicious_ _much_ _2. 选择正确的答案。1. The air i

28、n Beijing is getting much _ now than a few years ago. A. clean B. cleaner C. cleanest D. the cleanest 2. John is _runner of all the classmates. A. good B. better C. best D. the best 3. Beijing is one of _ cities in China. A. very beautiful B. much beautiful C. more beautiful D. the most beautiful 4.

29、 The Yellow River isnt so _as the Changjiang River. A. long B. longest C. longer D. the longest 5. Who is _, Jim, Li Lei or Ling Feng? A. tall B. taller C. the tallest D. much taller3. 讲解英语周报第10期第三版的Grammar部分的练习。Step 4 Homework1. 完成阳光学业评价unit3 Grammar 部分。2. 预习More practice。Unit 3 ComputersPeriod 5教学

30、内容：More practice教学目标：语言知识：1. 认识和理解单词serious,health;认识单词effect。2. 学习相关的语言点。语言技能：1. 能用英语说出沉溺电脑的坏处并提出建议。2.能运用语言点的知识。情感态度：合理安排使用电脑的时间，使之成为学习的好帮手。教学重点：学习相关的语言点。教学难点：能用英语说出沉溺电脑的坏处并提出建议。Teaching procedures:Step 1 Pre-readingTalk about:The harmful of playing computer games for a long time.Brainstorming:Play

31、ing computer gamesStep 2 While-readingMore practice1. First reading Read the passage on page 45 quickly,and answer the two questions.(1) Who is the man in the picture? _(2) What is the man doing? _2. Second readingRead the passage again and answer the following questions and then check the answers w

32、ith your partner.(1) Who is attending the meeting? _(2) Why did the student become ill? _(3) What is the serious problem? _(4) Who will talk to the students tomorrow? _(5) What will they talk about? _Step 3 Post-readingHow can young people stop themselves from playing computer for too long? Discuss

33、this with your classmates.First, we should_Second, we should_Third, we should_Step 4 Language point1.The student played computer games on the Internet all day Saturday without stopping to drink, eat or sleep. 这个学生星期六整天上网玩游戏，不喝不吃不睡。(1) stop to do sth 停下来去做某事(表示停下手中的事去做另外一件事)。例如：他看见我时，停下来跟我打招呼了。 He st

34、opped to say hello to me when he saw me. (2) stop doing sth 停止做某事(表示不做某事了)。例如：我爸爸戒烟了。My father stopped smoking.2.I hope we can all work together to stop students from spending too much time playing computer games.我希望我们能一起努力阻止学生们花太多时间玩电脑游戏。stop sb (from) doing sth 阻止某人做某事(from经常被省略)。例如：他阻止我出去。 He sto

35、pped me from going out.3.Theyll also give some advice on how to use computers for studying.他们也会给一些关于怎样利用网络学习的建议。some advice on 关于某方面的建议（advice 不可数）how to do-怎样做某事（必须接宾语）Step 5 Homework1. 写一篇关于How can young people stop themselves from playing computer games for too long?的短文，谈谈自己的看法。2. 利用搜索引擎查找更多关于“形容

36、词比较级和最高级”的信息，并整理成笔记。3. 选择性完成英语（八年级 上册）B第45至48页Integration的练习。Reflect:Unit 3 ComputersPeriod 6教学内容：Speaking(Talk time & Speak up)教学目标：语言知识：掌握特别重读这一语言现象。语言技能：1. 能用特别重音强调句中想要突出的单词；2. 听录音，跟读对话，能分析特别重读某些单词的原因；3. 通过小组合作，就他人在家使用电脑的情况做一个问卷调查，记录调查结果，并向全班口头汇报。学习策略：能根据重音规则分析并判断练习中应特别重读的单词。Teaching procedures:S

37、tep 1ReadingA1 Read the conversation below and practise it in pairs. Give extra stress to the words underlined twice.(page 42)Amy: What do you think of computers, Frank? Are they cleverer than human beings?Frank: No, I dont think so .Amy: Why not? Computers can do a lot of things!Frank: Maybe, but h

38、uman beings created computers!Amy: Thats true .Step 2 ThinkingRules about sentence stress:1 Stress nouns, verbs, adjectives, adverbs and numbers.2. Do not stress words like a, the, is and have except for special reasons.3. Give extra stress to the most important word in the sentence. You, the speake

39、r, must decide what the most important word is.Step 3 Listening Listening to the radio(Book A P42 A1,A2),and read the conversation together.A1 Amy: What do you think of computers, Frank? Are they cleverer than human beings?Frank: No, I dont think so .Amy: Why not? Computers can do a lot of things!Fr

40、ank: Maybe, but human beings created computers!Amy: Thats true .A2Frank: Which kind of computers are better,desktops or laptops?Amy: Laptops, I think.Frank: Why?Amy: Laptops are lighter. Theyre easier to carry around than desktops!Frank: Yes, but desktops are often cheaper than laptops. And I dont r

41、eally have much money. Amy: Well, then a desktop is probably a better choice for you.Step 4 Talking Go around the class and interview other students. Make notes of their answers. Then each group should report their findings to the class. Use the following questions to help you.1. Do you have a compu

42、ter at home?_2. How often do you use the computer?_3. What do you usually do on the computer?_4. How much time do you spend playing computer games every day?_5. How do you use the computer to help you study?_6.You own questions:_Step 5 Homework1. 运用重音和特别重音的知识，朗读教材第39至40页的对话。2. 背诵单元的单词和短语。Reflect:Uni

43、t 3 ComputersPeriod 7教学内容：Listening教学目标：语言知识：1. 认读和理解单词company,order,price,total 和短语grand total;2. 听一段订购办公用品的电话对话，掌握电话对话购物的用品。语言技能：1. 通过听一段订购办公用品的电话录音，训练在听的过程中能准确捕捉特定信息的技能；2. 运用速记的方法，能准确记录办公用品型号、数量、单价各物品总价和所有物品的总价等关键信息。文化意识：了解计算机和互联网技术日新月异的发展。学习策略：1. 提高听力中获取关键信息的能力；2. 提高听前预测能力。Teaching procedures:St

44、ep 1Pre-listening1. Brainstorming A.Which do you like/dislike? Why? B.Which do you prefer, shopping on the phone or on the Internet ? Why?2. PredictionStep 2While-listening1.Listen to the tap carefully and complete the table with the key words.2. Check the answer.1. A1961 150 1,500 2.C4091 1,200 1,2

45、00 3.300 4.3,000Step 3Post-listeningRole play: A:Man B:Mabel和同伴开展对话活动，其中一个扮演顾客Mabel，一个扮演销售人员。A:Top office.How may I help you?B:This Mabel Wang from Hi-Lo company.Id like to place an order,please.A:Good morning,Ms Wang.What would you like to order?B:Ill give you the numbers.First is A1691.A:A1691.Tha

46、ts A4 paper.B:Id like ten boxes,please.A:Ten boxes,at 150 yuan each.Thats 1,500 yuan.Anything else?B:Yes,Id like a monitor.Its number is C4091.A:C4091.Its 1,200 yuan now.B:I need some CDs too.The number is D2791.Id like to order fives boxes.How much is one box?A:One box is 60 yuan,so the price for f

47、ive boxes is 300yuan.B:OK.Thats all.A:Altogether thats 3,000 yuan. Thank you very much.Well send you those tomorrow morning.B:Great.Thank you.Goodbye.A:Goodbye.Step 4 Homework1. 完成英语（八年级 上册）B第38至39页Listening。2. A层同学背文章第二部分。Reflect:Unit 3 ComputersPeriod 8教学内容：Writing教学目标：语言知识：1. 了解英语书信的格式；2. 掌握英语书信的写作类型。语言技能：根据实