八年级英语Computer technology课件1.ppt

1、一间半教室大一间半教室大它由17468个电子管、6万个电阻器、1万个电容器和6千个开关组成，重达30吨，占地160平方米，耗电174千 瓦，耗资45万美元 monitor keyboard mouse main unit主机主机 drive CD-ROM/CD-ROM/DVD-ROMDVD-ROM speakers flash diskradioironrice cookerTV setelectric fanvacuum cleaner telephonewashing machine ice box air conditioner camera computer/refrigerator/

2、fridge mobile phone/cell phone Look at the pictures of a computer below and try to write the correct name of the parts to complete the sentences.A What do you know about?monitor keyboard mouse main unit主机主机 drive CD-ROM/CD-ROM/DVD-ROMDVD-ROM speakers flash disk1.The _ shows words and pictures.2.We u

3、se the _ for typing in information.3.The _ _ stores information.4.The _ helps us control the computer.6.We can hear the sound from the _.7.We put the _ or _ into the _.monitorkeyboardflash diskmousespeakersCD-ROMDVD-ROMdrivesB Look and thinkLook at the titles of the articles and the pictures on the

4、next page.Then discuss the following statements with a partner and correct any mistakes.True or False Computers 1.are inside many machines in our homes.()2.can do important jobs like flying planes.()3.Are already cleverer than people.()FsomeTplaces and spaceshipsnotF Read Hidden helpers and answer:W

5、hat are“hidden helpers”?Why do we call them“hidden helpers”?“Hidden helpers”are computers.We callthem hidden helpers because sometimes they are inside the machine,we might be unaware of them.Listen to the recording and fill in the blanks:What kind of jobs can a computer do?Computers can:1_.2_ _ and

6、_.3 _you and _ _with you.4 _railways,_ aeroplanes and spaceships.calculatetypeprintdrawteachplay gamesoperateflyWhat kind of jobs can a computer do?1.Is a computer cleverer than human beings?Why?The answer _ this question is,for the time being,“_”.Because human beings have _ understanding of the mea

7、ning of things _ computers and can _ new ideas.2.What will happen in the future because of Computers?One day computers may be able to do more things than a human brain and do them better.Computers will change our lives.toNogreaterthancreatecan=be able to 能够能够Is a computer cleverer than I am?C Find t

8、he meaningsC1 Find these words and expressions in the passage.Then read the words round them and choose the best meanings.1.hardly evera.sometimes b.seldom c.often2.tinya.very important b.very big c.very small 3.realizea.allow b.understand c.decide4.operatea.make something work b.make something stop

9、c.make something grow5.for the time beinga.in the past b.at present c.in the future6.raise a.lift up b.put down c.bring to our attentionC1 Find these words and expressions in the articles on Page45.then read the words around them and choose the best meanings.C2 Find the words in Column A in the arti

10、cles.Then read the words around them and choose the meansing from column B.1.hidden2.be unaware of3.railway4.type5.judgesa.a track with rails on itb.senior law officersc.write something with a computer,typewriter,etc.d.difficult to see or finde.do not know about ABE Read and thinkPeople often expect

11、 you to give examples to explain something.Read the statementsbelow and give examples to support each one.Put one word in each bank.1.S1 There may be tiny computers in your home.S2 Where,for example?S1 Inside your _ _,_ or _ _.2.S1 Computers can do many things.S2 Can you give me some examples?S1 The

12、y can _ _ _ and _.3.S1 Computers can do some important jobs.S2 For example?S1 Computers can _ _ and _ _ and _.TV set telephone washing machinecalulate type print draw operate railwaysfly aeroplanes spaceships4 S1 A human brain can do some things better than a computer.S2 For example?S1 It can _ _ _.

13、5 S1 In the future,computers may change our lives a lot.S2 For example?S1 We many have _ _ _.create new ideas computer doctors computer judges computer teachers1.write an article about 2.hardly ever=seldom4.be unaware of be aware of5.for example such as 6.be dependent on depend on 7.in the world8.at

14、 the moment9.be fast at doing sth.be good at doing sth.写一篇关于写一篇关于的文章的文章几乎没有几乎没有没有意识到没有意识到意识到意识到例如例如依靠依靠;信赖于信赖于Useful Expressions世界上世界上此时；目前此时；目前做做很快很快善长于善长于10.play games with sb.11.more importantly12.operate railways13.fly planes and spaceships14.for these reasons15.electronic brains16.the answer to

15、 this question和和一起玩游戏一起玩游戏更重要的是更重要的是操控铁路操控铁路操控飞机和宇宙飞船操控飞机和宇宙飞船由于这些原因由于这些原因电子脑电子脑这个问题的答案这个问题的答案Useful Expressions17.for the time being18.of ones own19.be able to do sth.20.human brain21.happen to 22.in the future23.change our lives24.have nothing to do 25.make our lives better26.have great understand

16、ing of 暂时暂时（属于）某人自己的（属于）某人自己的能够做能够做人脑人脑发生发生(在）将来在）将来改变我们的生活改变我们的生活无所事事无所事事Useful Expressions使我们的生活更好使我们的生活更好对对有很深的了解有很深的了解1.Tony collects some information to write an article about computer.托尼为写一篇关于计算机的文章，收集了一些信息。托尼为写一篇关于计算机的文章，收集了一些信息。information 信息信息（不可数名词）（不可数名词）If you surf the Internet,you can f

17、ind_ information there.A.many B.a number of C.a lot D.muchmuch/little/a little/some/any/a lot of/lots of/a deal of/enough/no可修饰不可可修饰不可数名词数名词Importance and Difficulty2.There are also many tiny,hidden computers in your home,but you might be unaware of them.在你家里也有微型的、隐藏的计算机，但是在你家里也有微型的、隐藏的计算机，但是你没有意识到它

18、们。你没有意识到它们。hidden helpers神秘助手神秘助手(hidden是过去分词是过去分词作定语修饰后面的作定语修饰后面的helpers)a broken cup 一只破怀子一只破怀子 boiled water开水开水 fallen leaves落叶落叶 be unaware of=dont realize/know没有意识到没有意识到反义：反义：be aware of=realize/know意识到意识到Some students are unaware of the importance of English learning.Importance and Difficulty

19、3.You are more dependent on computers than you realize.你比你意识到的更加依赖计算机。你比你意识到的更加依赖计算机。be dependent on 依赖于依赖于All living things are dependent on the sun.万物依靠太阳。万物依靠太阳。翻译：中学生不应该太依赖父母。翻译：中学生不应该太依赖父母。Middle school students shouldnt be dependent on their parents too much.拓展：拓展：depend on依靠；依赖依靠；依赖翻译：好的健康依赖于

20、好的食物。翻译：好的健康依赖于好的食物。Good health depends on good food.Importance and Difficulty4.The answer to this question is,for the time being,NO.目前这个问题的答案是目前这个问题的答案是“不不”。the answer to the question 这个问题的答案这个问题的答案(这里要注意介词这里要注意介词”to”的固定用法。）的固定用法。）拓展：拓展：the key to the door门上的钥匙门上的钥匙 the way to the school去学校的路去学校的路

21、the entrance to到到的入口的入口 the reply to .的回答的回答 但：但：the ticket for tomorrow明天的票明天的票 the homework for today今天的作业今天的作业Importance and Difficulty5.Will computers make our lives better or worse in the future?计算机会使我们将来的生计算机会使我们将来的生活更好或更坏？活更好或更坏？make our lives better使我们生活更好使我们生活更好 此处是此处是”make+宾语宾语宾补（形宾补（形/名名/

22、过去分词过去分词“结构结构 Too much food made him ill.(形容词）形容词）We make him our monitor.(名词）名词）I cant make myself understood.(过去分词）过去分词）拓展：拓展：make sb.do sth.使某人做某事使某人做某事 My mother always makes me _ housework.A.doing B.to do C.do D.doneImportance and DifficultyListen to the summary of the text.Fill in the blanks a

23、nd then recite it.Workbook P39In order to write an article about computers,Tony(1)_ some information.Now he knows a lot about(2)_.Not many years ago,we could(3)_ ever see computers.But now they are everywhere.There are(4)_,hidden computers in your home,but you might be(5)_ of them.Computers can do a

24、 lot of things.They are faster at(6)_ than people.They can also type,(7)_ and draw.collectscomputershardlytiny unawarecalculatingprint More importantly,they can(8)_ railways and fly planes and spaceships.For these(9)_,we often call them electronic(10)_.But for the time(11)_,computers are not as clev

25、er as(12)_ beings.We have(13)_ understanding of the meaning of things than computers and can also(14)_ new(15)_ of our own.However,one day computers may be able to do more things than a human brain.operatereasonsbrainsbeinghumangreatercreateideasFilling in an order form Mabel Wang is ordering some o

26、ffice products for her company.You are the man from Top Office Supplies.Listen to the recording,and complete the details of Mabels order on the form below.After you finish,work out the grand total.fill in an order form填写一张订单表格填写一张订单表格 pay attention to 注意注意 product n.产品产品 quantity n.数量数量 as quickly a

27、s possible 尽可能快尽可能快 supply n.供应；提供供应；提供 order n.订单订单 v.下订单；命令下订单；命令 company n.公司公司 reference n.标识；编号标识；编号 ballpoint pen n.圆珠笔圆珠笔 price n.价格价格 medium adj.中等的；中号的中等的；中号的 useful words and expressionsTOP OFFICE SUPPLIES Company name:_Customer name:_Customer No.:_ Hi-Lo Company Mabel Wang KY-73620Referen

28、ceNo.ProductColour/SizeQuantityPrice(each)TotalJ-1505ballpoint pensblack3 boxes￥38￥114(1)A4 paper(2)(3)(4)(5)(6)(7)medium(8)￥190(9)(10)(11)(12)(13)(14)(15)Grand total:(16)P-1961white10 boxes￥30￥300C-4091 keyboard1￥190￥1800￥2404C-4083 office chair￥18001blackLanguageAdjective 形容词形容词A The comparative o

29、f adjectives When we compare two things,we add er to Short adjectives and use more with long adjectives.We often use than when we compare two things.Examples:cheap cheaper high higher useful more useful expensive more expensiveBooks are cheaper than computers.Computers are more expensive than books.

30、形容词的比较级和最高级形容词的比较级和最高级B The superlative of adjectives When we compare two things,we add est to Short adjectives and use most with long adjectives.We usually use the in front of a superlative.Examples:fast fastest long the longest difficult the most useful interesting the most expensive.Money is valu

31、able.Time is more valuable than time.Water is the most valuable of all.形容词的比较级和最高级形容词的比较级和最高级Liu Xiang is_.Yi Jianlian is _ _Liu Xiang.Yao Ming is _ _of the three.talltaller thanthe tallest注意：最高级后面可用注意：最高级后面可用in,of,among等短语来说明比较范围。等短语来说明比较范围。AmericaRussiaAmerica is very_.China is _ _ America.Russia

32、is _ _ of all.largelarger thanthe largestjadediamond1,000 dollars500 dollars10,000 dollarsThe jade is very _.The computer is _ _ _ the jade.The diamond is _ _ _ among them.expensive.more expensive than the most expensive单音节形容词的单音节形容词的构成方法构成方法原级原级比较级比较级最高级最高级一般在词尾加一般在词尾加-er 或或-est tall taller tallest

33、以字母以字母e结尾的结尾的单词后加单词后加-r 或或-st nice fine nicer finer nicest finest 以以“辅音字母辅音字母+y”结尾的双音节词，结尾的双音节词，先改先改y为为i,再加再加-er或或-estearlyheavy earlier heavier earliest heaviest规则变化规则变化形容词比较级和最高级的构成形容词比较级和最高级的构成more usefulmorebeautifulthinnerbiggerhottermostusefulmostbeautifulthinnestbiggesthottestuseful beautiful

34、多多音节词音节词 或少数或少数双音节词双音节词，在词，在词前加前加more 或或 mostthinbighot重读闭音节词尾重读闭音节词尾只有一个辅音字只有一个辅音字母时，应先母时，应先双写双写这个辅音字母，这个辅音字母，再加再加-er或或-est形容词比较级和最高级的构成形容词比较级和最高级的构成形容词比较级和最高级的构成形容词比较级和最高级的构成C The comparative and superlative of good,bad and far1.nice-_-_ 2.thin-_-_3.early-_-_4.hot-_-_5.happy-_-_6.easy-_-_7.difficu

35、lt-_-_8.beautiful-_-_9.popular-_-_10.careful-_-_ 11.good/well-_-_12.bad/ill-_-_13.many/much-_-_14.little-_-_15.far-_-_默出下列形容词的比较级与最高级默出下列形容词的比较级与最高级 nicer nicestthinner thinnest earlier earliest hotter hottest happier happiest easier easiest more difficult most difficultmore beautiful most beautiful

36、 more popular most popular more careful most careful better best worse worst more most farther/further farthest/furthest less leastComplete the sentences with the camparative forms of the given adjectives in the box.Add than if necessary.expensive young large popular short slow heavy 1.Ava is 18.Her

37、 sister is 21.Ava is _ her sister.2.Lev runs 1 mile in 7 minutes.Doris needs 8 minutes.Doris is _.3.Annika has a lot of friends.Her brother has only one.Annika is _.4.John pays$50 for his shoes.His brothers pays$100 for his.Johns brothers buys _ shoes.younger than slower more popular more expensive5

38、.Leas room is 20 square metres.Her sisters is 12 square metres.Leas room is _ her sisters.6.Todd weighs 125 pounds.His brother weighs 110 pounds.Todd is _ his brother.7.Natalie is 1.55 metres tall.Her sister is 1.6 metres tall.Natalie is _.expensive young large popular short slow heavy larger than h

39、eavier than shorterP49ADavid is going abroad for the first time and needs to buy a suitcase.He is talking to a salesman in a shop.Use the adjectives in the box to complete their conversation.Keys:(1)more expensive(2)cheaper(3)heavier(4)lighter(5)bigger(6)smallerP50BB1 Pansy is shopping for a camera.

40、Look at the pictures and write the correct letters or the cameras after each statement.Keys:(1)b (2)a (3)c (4)c B2 Later,Pansy told Tony about her shopping trip.Complete Pansys sentences with the adjectives in the box.Keys:(1)most expensive model￥3,580(2)oldest model 2006(3)lightest model 0.16kgP50

41、B3 Work in pairs.S1 asks the questions.S2 gives the answers.Follow the example.Remember to use the with the adjectives.Examples:(big)Earth,the moon or the sun?S1 Which is the biggest,Earth,the moon or the sun?S2 The sun is the biggest.Keys:1 S1 Which is the smallest,a bee,a butterfly or an ant?S2 Th

42、e ant is the smallest.P50 B3 Work in pairs.S1 asks the questions.S2 gives the answers.Follow the example.Remember to use the with the adjectives.Examples:(big)Earth,the moon or the sun?S1 Which is the biggest,Earth,the moon or the sun?S2 The sun is the biggest.Keys:1 S1 Which is the smallest,a bee,a

43、 butterfly or an ant?S2 The ant is the smallest.P51 2 S1 Which is the largest,the Atlantic,the Pacific or the Indian Ocean?S2 The Pacific is the largest.3 S1 Which is the most valuable,iron,silver or gold?S2 Gold is the most valuable.4 S1 Which is the hottest,the North Pole,the South Pole or the Gob

44、i Desert?S2 The Gobi Desert is the hottest.5 S1 Which is the heaviest,a bear,a whale or an elephant?S2 A whale is the heaviest.6 S1 Which is the fastest,a rocket,a plane or a train.S2 A rocket is the fastest.P51 C Look at the school record below and work in pairs.S1 asks questions about it,with the

45、correct formOf the adjectives in brackets.S2 replies.Keys:3.has the worst marks;Pauline4.has better marks;Daisy5.has better marks;Alice6.has the worst marks;Eric7.farther;Belindas8.the farthest;Eric形容词形容词比较级的比较级的基本句型基本句型拓展：形容词比较级的基本句型拓展：形容词比较级的基本句型1.AB或或AB（比）（比）Im much taller than my father.Tom is m

46、ore careful than his elder brother.2.A B C或或A B C(最）最）Mary is the tallest girl in her class.This is the most difficult of the three.3.A=B(和和一样）一样）This exercise is as easy as that one.Tom is as tall as John.4.AB(不如不如)Our classroom isnt as/so clean as yours.Tom is not so/as tall as John.拓展：形容词比较级的基本句型

47、拓展：形容词比较级的基本句型5.最最之一之一Shanghai is one of the biggest cities in the world.My brother is one of the best students in his school.6.more and more(越来越越来越)It is getting darker and darker.Our country is becoming stronger and stronger.7.the morethe more(越越越越.)The busier he is,the happier he feels.The more y

48、ou eat,the fatter you will become.Giving opinions（表达观点）（表达观点）I think(我认为我认为)In my opinion,(据我看来，据我看来，.)Agreement(表示同意）表示同意）I agree.(我同意）我同意）Yes,indeed.(是的，的确如此）是的，的确如此）Thats just what Im going to say.(那也那也是我想说的）是我想说的）I think so.(我也这样想。）我也这样想。）Yes,thats right.(恩，说对了）恩，说对了）Disagreement(表示不表示不同意）同意）I d

49、ont agree.(我不同意）我不同意）Im not sure about that.（我不确定）（我不确定）I wouldnt say that.(我可不会这样说。）我可不会这样说。）Giving opinions,agreeing and disagreeingP52 Speaking A Talk timeA2Keys:1.Tony thinks Cantonese food is better than Sichuan food.2.Joyce thinks Sichuan food is better than Cantonese food.3.Yes.Joyce agrees S

50、ichuan food is hotter than Cantonese food.P52 Speaking B Speak upBKeys:1.Do you ever use computer in your home to do homework?2.How do you play computer?3.Do you have a computer in your home?4.Is there any homework on computer?5.Do you enjoy playing computer?6.Would you like to write e-mails?How do