九年级英语上册Chapter2Computers教案上海牛津版

1、Chapter 2 ComputersOverview:This chapter is about computer and other machine. The main passage is a set of short texts about different aspects of computers and their effects on our life.The listening section requires students to listen to a telephone order andcomplete an order form for some office p

2、roducts. The language section featuresexercises on various products including suitcases and cameras. The main task inthe speaking section includes a task in which students have to compare two radio-controlled cars, and then two flats.ReadingA What do you know about?This exercise introduces the subje

3、ct of computers further, and teaches someusefulbasicvocabularyitems.Ask studentsto completethe exercise.Those studentswho are very familiar with computers can help those who are not.B Find the factsAs before, use this exercise to develop scanning skills.Vocabulary1.Learn the new words.2.Do some exer

4、cises about the words.C Find the meanings1. Tell students to do Ex C1 and C2. They must look carefully at the words in context and see which option has the correct meaning.2. Tell students to compare their answers with their partners, and then to discuss any differences.Text “Computers”This is an in

5、terview between Pansy and Detective Ken.1.Listento the tape twice.2.Read the text after the tape.3.Answer questions.(1)What do we call computers?(2)What kind of jobs can they do?(3)How do we give a computer instruction?(4)Who write the program?(5)Are all the programs the same or different?(6)Is a co

6、mputer cleverer than a man?(7)What is the CD-ROM used for?4.Analyze the text.D Read and thinkThis simple exercise draws attention to one of the principal methods of sentence building.用心爱心专心- 1 -Notes:1. Introduce students to such as as an alternative way of including examplesin a sentence. When we u

7、se for example, we must have already defined what we aretalking about. Such as can be used in the same way, but sometimes it can be the part of the definition.2. Such as must be placed directly next to the words it refers to, and it mustbe followed by a noun or nouns. Unlike for example, such as can

8、not be followed by a finite clause.ListeningFill in an order form1.This exercise gives students practice in two skills: selecting the relevantinformation from a dialogue, and filling in a form correctly.2.As usual. Explain the situation clearly. Students must act the role of theman, and writedown th

9、e information.Explainany difficultwords.Play the recordingtwice.3.Check their answers.4.Teach the new words:Screen filter contact reference no quantity本章听力练习是将所给的图片排序。在做这类听力练习前同学们应该将所有的图片都看一遍。通常给出的图片构成一个完整的故事情节，图片与图片之间也有着很强的逻辑关系。利用听录音前的时间，迅速地捕捉每幅图片所提供的信息，预测短文中可能涉及到的内容，这样听录音材料是就有的放矢。在看图片， 也要努力辨别出图片与图

10、片之间的不同之处，以便于准确找出与短文相匹配的图片。LanguageA Comparing two things1.Draw some dissimilar pairs of lines, shapes or simple objects on the boardand ask the class to tell you the differences between them. They should be able tomake short sentences telling you.2.Readthe introductionto the class.Ask studentsto giv

11、eyou examples of thingswhich are cheaper, higher, and more useful than the others.3.Point out that, usually, one-syllable adj take the -er ending. Two-syllablewords ca n use eitherthe -erendingor the more construction,but longeradjalwaysuse more. Many two-syllable adj are almost found the -er form.

12、Lucky-luckier funny-funnier quiet-quieter clever-cleverer 4.Ask students to do Ex A1 on their own.5.Tell students to do Ex A2 and A3 with their partners.B Comparing more than two things.1 R ead the introduction with the class. Note that the rules for the formation of superlative adjectives are simil

13、ar to those for the formation of comparative用心爱心专心- 2 -adjectives. The -er ending of the comparative adjective is replaced by the -est ending of the superlative, and more is replaced by the most. Irregular forms are considered on page 27.2 Tell students to do Exercises B1 and B2 on their own.3 Do Ex

14、ercises B3 with the class, telling the students to follow the given instructions.4 Stress to the class the need to use the article the. There can only be oneocean that is the biggest, so there is definite reference, and the definite article must be used.C Using good, bad and farRead the introduction

15、 with the class. Ask students to do Exercises C1 and C3 on their own, and to do Exercises C2 with their partners.Notes:1 Further and furthest have the same meaning asfarther and farthest, exceptthat further hasthe additional meaningof extra/ more (e.g., Thedoctor will tellyou if there are any furthe

16、r developments.).2The adjectiveillisnot usuallyused in the comparativeor superlativeforms.We use worse and worst instead.SpeakingA Talk timeGiving opinions, agreeing and disagreeing1This sectioncontinuestopracticethe comparativeand superlativeforms andhelps students to take part in conversations exp

17、ressing opinions.2Linguistsoftenuse the conceptof maintainingface toexplainmany languagestructures.Ifsomeone disagreeswithyou but does not wish to offendyou,they mustuse language formsthatsoftenany threatto you. When we say so mething thatpleasessomeone, such as agreeing with them, we can be much mo

18、re straightforward.3 Read the examples in the Students Book, and then point out the followingadditional expressions of agreement.Yes, indeed.Yes, (thats) exactly what I think.I agree totally/ 100%/ completely.Thats just what I was going to say.I think so, too.Yes, thats right.How true!4 Expressing d

19、isagreement is sometimes more of a problem. Here students aretaught a very bare form, suitable to their level. Certainly, a direct form such asI dont agree should be spoken with some hesitation in the voice.5Adverbs are oftenused toweaken theforceof the disagreement( e.g.,I dontreallyagree;Idontalto

20、getheragree.).Pointouttheseotherformsofdisagreements.Im not so sure about that.用心爱心专心- 3 -Do you really think so?Im a bit surprised you say that.Well, thats a matter of opinion.I wouldnt say that.6 Do ExA1. Read the dialogue to the class and tell them to practise it. Then ask one or two pairs of stu

21、dents to perform it.7 Do Ex A2 and A3.B Speak up1 This activity requires students to prepare and carry out a simple survey in English. It also allows them to have some variety in the task. It is not essential for of them to have the same survey questions.2 Let students work in pairs or in groups of

22、three to produce eight questionson this topic. If possible, check their questions (mainly to make sure they makesense) before the nextstage.Sample questions are given below but students are free to have differencequestions.3 If time permits, let some students report back to the class. They cam thisb

23、y simply reading out their questions and summarizing some of the results.Asking Yes, No questionsThisisa familiargame which issometimes calledTwentyQuestions.The gamepractices the skill of forming questions in English, which most students finddifficult.However, thisisan importantskillin both lifeand

24、 exam. Thisgame alsodevelops logical thinking. In this variation, students must imagine that they are a famous person or a character.Sample questions:Are you alive/dead/real/fictional?Were you in books/songs/films/poems?Do/Did you live in Europe/Asia/China?Did you live hundreds/thousands of years ag

25、o？Did you live in the 18th/21st century?Did you write books/paint pictures/fight battles?Are you a film star/singer/politician/sportsman/woman?Have you ever been in a film/visited China?Are you a cartoon character/character in a legend?Using English Abbreviations1 Abbreviations are useful in note-ta

26、king, as well as being items that the students will see frequently. Ask the class to do Exercise A.WritingThis exercise gives further practice in using the comparative form of adjectives in a context analyzed task. It also practices information-transfer skills. Ask用心爱心专心- 4 -students to work individ

27、ually to complete the two exercises.Additional activity:Ask students to write a few sentences comparing:their primary school and their secondary school;Shanghai and Beijing;Trams and buses.本章的作文是记叙文。记叙文是以叙述描写为主要手法、以记人叙事为主要内容的。记叙中，记叙的可以是人，可以是事，也可以是景和物。写好记叙文要注意以下几个要点：1 审题分析题意， 仔细研究和审查题目的含义及要求， 避免写出文不对题的作文，犯作文中写作忌讳。2确定中心思想即“立”什么样的“意”，它是文章的灵魂。3 选材与组材选择生动有趣而又紧扣主题的典型事例，恰当安排写作次序，一般是以情节发生的时间先后