廣州新版八年級(jí)上冊(cè)Unit3Computers

1、精選優(yōu)質(zhì)文檔-傾情為你奉上Unit 3 Computers課文重難點(diǎn)詳解1. In the 1940s, the first computers were bigger than cars. in the 1940s意為“在20世紀(jì)40年代”，例：在20世紀(jì)50年代 表示在某個(gè)年代初期或末期，可以在年份前加early或late. 例：in the early 1940s2. You may be unaware of them. be unaware of 意為“未察覺，沒有意識(shí)到” 譯：那個(gè)男孩沒有意識(shí)到危險(xiǎn)。 3. There is probably one inside your TV

2、or washing machine. one 此處用作代詞，用于泛指前面提到過的名詞。辨析：one 和itone泛指上文提到的同類事物中的一個(gè)I lost my pen. I must buy one.it特指上文提到的同一物品The coat is hers. Its very beautiful.例 ：The banana pie tastes delicious. Could I have another ? A one B it C this D that4. You depend on computers more than you realize. depend on意為“依靠，

3、指望”，主語可以是人，也可以是物，其含義有所不同。人依靠 depend on 物 取決于dependent adj. 依賴的， 反義詞：independent “獨(dú)立的” depend on = be dependent on 譯：she depends on us to help her. Our plan depends on the weather. 5. Computers almost never give wrong answers. almost never = hardly 意為“幾乎不”辨析：hardly和hardhardly“幾乎不”Alice hardly wears s

4、kirts.hard“努力地，困難地，猛烈地”It rained very hard last night.6. However, one day computers may be able to do a better job than human beings. be able to 意為“能夠”，后接動(dòng)詞原形。7. Will we have nothing to do?to do為動(dòng)詞不定式，此處用來修飾nothing,如果不定式中的動(dòng)詞是不及物動(dòng)詞，需要帶上必要的介詞。例：Do you want something to drink?There is a warm clothes to

5、 live in.例：-Why dont you go out to play, Rose?-Im afraid I cant. I have much homework .A do B does C doing D to do8. What were the first computers like? What + be + 主語 + like? 意為“.怎么樣？”, like 是介詞，意為“像，相似”譯：今天天氣怎么樣？ 辨析：whats sb like, what does sb like 與what does sb look likeWhats sb like“某人如何”用于詢問某人的

6、性格，品質(zhì)等What does sb like“某人喜歡什么”用于詢問某人的愛好What does sb look like“某人長(zhǎng)什么樣”用于詢問某人的外貌9.Some young people always need help from their parents. need 用法總結(jié)： need sb/ sth 需要某人或某物 例：I need a pen to write with. sb need to do sth 某人需要去做某事 例：He needs to have a good rest. sth need doing 某物需要被. 例：My bike needs repai

7、ring. neednt 用來回來Must 提出的問句 例：-Must I bring my homework now? -No, you neednt.重點(diǎn)語法： 形容詞的比較級(jí)和最高級(jí) 分為規(guī)則變化和不規(guī)則變化 規(guī)則變化如下: 1) 單音節(jié)形容詞的比較級(jí)和最高級(jí)形式是在詞尾加 -er 和 -est 構(gòu)成； great long 2) 以 -e 結(jié)尾的單音節(jié)形容詞的比較級(jí)和最高級(jí)是在詞尾加 -r 和 -st 構(gòu)成； wide nice 3)以輔音字母+y結(jié)尾的形容詞，比較級(jí)和最高級(jí)是把 y 去掉,加上 -ier 和-est 構(gòu)成； happy empty 5) 輔元輔的形容詞，比較級(jí)和最高級(jí)

8、是雙寫該輔音字母，再加-er和-est； big fat 6) 部分雙音節(jié)和多音節(jié)形容詞，比較級(jí)和最高級(jí)需用more 和 most 來構(gòu)成。 beautiful difficult 常用的不規(guī)則變化的形容詞的比較級(jí)和最高級(jí): good/well-better-bestmany-more-mostmuch-more-most little-less-least bad/ill-worse-worst far-farther/ further-farthest/furthest old-older/elder-oldest/eldest 形容詞前如加 less 和 least 則表示較不和最不 i

9、mportant 重要 less important 較不重要 least important 最不重要 形容詞比較級(jí)的用法1. 兩者比較時(shí)用形容詞比較級(jí)，其結(jié)構(gòu)為“. 比較級(jí) + than .”如：Actions speak louder than words.2. 在兩者之間選擇“哪一個(gè)更”時(shí)，用句型 “Which / Who is +比較級(jí), . or .?” 如：Which sweater is cheaper, the red one or the yellow one?3. 表示“兩者之間最的一個(gè)”時(shí)，用“the + 比較級(jí)”如：Lucy is the taller of the

10、twins.4. 表示“越，越”時(shí)，用“the + 比較級(jí)，the + 比較級(jí)”如：The more you eat, the fatter you will become.5. 表示“越來越”時(shí)，用“比較級(jí) + and + 比較級(jí)”，多音節(jié)詞和部分用“more and more + 形容詞原級(jí)”如：We should make our country more and more beautiful.6. 形容詞比較級(jí)前可以用下列詞修飾：much, a little, far, a bit, a few, a lot, even, still, rather等如：Its much colder

11、 today than yesterday.表示“最之一”時(shí)，用 “one of + the + 最高級(jí)”如：The light bulb is one of the most helpful inventions.Unit 3 同步練習(xí)1. The workers spent two years my house. A build B building C builds D huilt2. - How often does Bob play tennis.- . A Every day. B For a year. C A week ago D A month later.3. - Woul

12、d you like TV?- Id love to, but I have lots of homework to do. A watching B to watch C seeing D to see4. Were looking forward the football game tomorrow. A to B at C on D of5. Im hungry now. Lets stop . A having a meal B having a rest C to have a meal D to have a rest6. That beautiful skirt is cotto

13、n. A made of B made into C made from D made up of7. What shall we if we go for a picnic? A bring B take C carry D get8. This box is_ that one.A. heavy than B. so heavy than C. heavier as D. as heavy as 9. When we speak to people, we should be . A. as polite as possible B. as polite as possibly C. as

14、 politely as possible D. as politely as possibly 10. This book is_ that one, but_ than that one. A. as difficult as; expensive B. as more difficult as; more expensive C. as difficult as; more expensive D. more difficult as; as expensive 11. I think the story is not so _ as that one. A. interesting B

15、. interested C. more interesting D. most interesting 12. His father began to work_ he was seven years old. A. as old as B. as early as C. since D. while13. I think science is _ than Japanese. A. much important B. important C. much more important D. more much important 14. This pencil is_ than that o

16、ne. A. longest B. long C. longer D. as long 15. My mother is no _ young. A. shorter B. longer C. little D. few 16. These children are _ this year than they were last year.A. more tall B. more taller C. very taller D. much taller 17. It was very hot yesterday, but it is_ today. A. even hotter B. more

17、 hotter C. much more hot D. much hot 18. Mrs Black has got_ instead of getting any better. A. more bad B. a little worse C. much badly D. a lot of worse完型填空All my family members like to use computers.We live in China, 1 my uncle lives in Australia. My father and my uncle often 2 emails to each other

18、. Sometimes 3 chat（聊天）online.My mother is a 4 in a middle school. She often 5 the computer for her lessons. She also gets information for her lessons 6 the Internet. My brother and I like to 7 computer games. I like to play Counter Strike, but he likes to play Tomb Raider. My 8 dont like us to play

19、them too long. They say that playing computer games too long is bad for our 9 and study. We both like 10 , too. So sometimes we download songs from the Internet to our MP3 players. ( )1. A. but B. andC. or D. so( )2. A. makeB. sendC. give D. write( )3. A. weB. youC. they D. I( )4. A. doctorB. teache

20、r C. student D. student( )5. A. playsB. buysC. uses D. does( )6. A. inB. on C. with D. at( )7. A. makeB. do C. play D.get( )8. A. parentsB. friendsC. father D. mother( )9. A. legsB. ears C. eyes D. faces( )10. A. musicB. English C. films D. books閱讀理解We are already familiar with computerscomputers wo

21、rk for us at home, in offices and in factories. But it is also true that many children today are using computers at schools before they can write. What does this mean for the future? Are these children lucky or not?Many people who do not know about computers think of them as machines that children p

22、lay with. They worry that children do not learn from experience but just from pressing a button and that this is not good for them. They think that children are growing not knowing about the real world.But people who understand more about computers say that computers can be very good for children. A

23、 computer can help them to learn about the real world more quickly, to learn what they want to learn and think for themselves. And for the future, dont we need people who can think clearly, who know how to get information quickly and use it well? What do you think?1. “To be familiar with” means to _

24、.A. know nothing B. know about C. dislike D. like2. Does everyone think computers are good for children?A. Yes, they do. B. No, not everyone thinks so.C. They dont know. D. They are not sure.3. What can computers help children to do?A. To think clearly, to do homework and to write. B. To play games,

25、 to do math and to copy.C. To think clearly, to get information and to use it well. D. To count, to clean the house and to get information.4. Does the writer think computer is a good thing?A. We dont know. B. No, he doesnt think so. C. He doesnt know. D. Yes, he does.一、短語知識(shí)點(diǎn)總結(jié)1、in the 1940s在20世紀(jì)90年代

26、的時(shí)候=in the 1940s3、 smaller and smaller 越來越小比較級(jí)+比較級(jí)越來越4、be unaware of 沒意識(shí)到5、inside prep. 在里面6、depend v. 依靠，依賴dependent adj.依賴的，依靠的；dependable adj. 可靠的depend on/ upon 依靠，依而定depend on it 毫無疑問，沒問題It all depends. 這也難說，要看情況而定。7、do with 處理(與what 搭配）deal with 處理（與how搭配）8、at a faster speed 以(用）一個(gè)更快的速度用工具 wit

27、h hands/ears/eyes/computers用聲音 in a low voice用語言 in English用材料 in ink,pen以價(jià)格 at the high price以速度 at a full speed9、give wrong answers = give a wrong answer 給出錯(cuò)誤的答案10、withprep. 和人一起具有用11、additionn. 加法，增加物 in addition= besides 另外in addition to= as well as 除了之外12、likev. 喜歡prep. 像like sth 喜歡某物like to do

28、 sth = like doing sth 喜歡做某事13、one day （過去或?qū)淼模┠程?some day(將來的）某天14、be able to do sth = can能夠做某15、For example 例如（一個(gè)例子）Such as 例如（多個(gè)例子）16、be better at doing sth 更擅長(zhǎng)做某事be good at doing sth擅長(zhǎng)做某事be good for .對(duì)有好處be good to.對(duì)友好17、have nothing to do 無事可做18、make v. 制作，使得，讓make sb do sth. 使得某人做某事make sb adj

29、使得某人19. factn. 事實(shí)，真相In fact事實(shí)上，其實(shí)=As a matter of fact 事實(shí)上，其實(shí)二、More Practice1Thank you/ thanksfor (doing) sth 因而感謝某人2With +n./prep/doing有Without +n./prep/doing沒有，缺乏3On the Internet 在網(wǎng)上4Used to do sth 過去常常做Be used to doing sth 習(xí)慣做某事5Sb spend time/money on sth 某人在某物上花錢/時(shí)間Sth costs money某物花錢Pay for sth

30、為某物付錢It takes sb some time to do sth 花某人多少時(shí)間做某事6In front of 在的前面(范圍之外）In the front of 在的前面（范圍之內(nèi)）7Be bad for 對(duì)有害8Give some advice 給建議9Hope for sth 希望得到某物Hope to do sth.希望做某事Hope (that)+句子希望10Stop to do sth 停下來去做某事（做別的事）Stop doing sth 停止做某事（停止正在做的事）Stop sb from doing sth 阻止某人做某事11. By doing sth 通過做某事1

31、2.Have to 不得不（客觀的）Must 必須（主觀的）13.How often 多久一次（問頻率）14.Much +比較級(jí)的多15.One of +最高級(jí)+n.(Pl.)之一16. Become +adj 變得17. Look forward to (介詞） 期望在介詞后面加動(dòng)詞，都加動(dòng)詞的ing形式。三、同步講與練1.Stop working ! Letsstopto havelunch.1. Stop_! Our teacher is coming.A. talkB. to talkC. talkingD. talked2. On my way home, I met an old

32、friend and stopped _ a talk.(have)2. Theyll also give some advice on how to use computers forstudying .他們也會(huì)給一些關(guān)于怎樣利用網(wǎng)絡(luò)學(xué)習(xí)的建議。give (sb) some advice onhow to do-關(guān)于某方面的建議（advice不可數(shù)）怎樣做某事（必須接賓語）=give (sb) some advice ondoing-1.王教師昨天給了我們一些如何學(xué)好英語的建議.Dr Wang gave us _ _ _English well.2. I dont know _ the co

33、mputer.A. what to useB. what usingC. how to useD. how using3.I hope we can all work together to stop students from spending too much time playing computer games.(p.45)stopsb.from doing 阻止某人做-sb. spend some time on/(in) doing 某人花錢、花時(shí)間做某事1.我們的環(huán)境越來越差了，我們應(yīng)該阻止人們砍伐樹木。Our environment is becoming worse and

34、worse, we should_ people _ _ down trees.2. Tom _ two days _ the story.A.took; to readB. paid; for readingC. spend; readingD. spent; on四、同義詞/同義句：tiny = very small 極小的expensive = dear = not cheap = costs a lot of money 昂貴的be unaware of sth = be not aware of = dont know = dont realize 沒有察覺到be aware of

35、sth = know = realize 意識(shí)到operate = make workdepend on = rely on 依賴in addition = besides = whats more 此外be able to do = can do 能夠做某事grand total = full amount 總額We can type and draw things with computers.= We can use computers to type and draw things.Mary is taller than any other girl in our school.= M

36、ary is the tallest girl in our school.IV詞型變化order（n） - order（v）compare（v）- comparison（n）mouse - mice（pl.）type （v）- typer 打字機(jī) typist 打字員（n）calculate（v）- calculation 計(jì)算 calculator 計(jì)算器（n）operate（v）- operation（n）sell-sold-sold（v） - sale（n）salesmandepend - dependent 依賴的（adj）-dependence 依賴（n）- independent

37、 獨(dú)立的（adj）- independence 獨(dú)立（n）I.同義詞() 1. I am sorry that I am unaware of the mistake.A. dont knowB. dont care about C. knows a little aboutD. knows a lot about()2. Could you tell me the grand total?A. little timeB. large numberC. whole workD. full amount()3. When I was young, I always depended on oth

38、ers.A. made friends with B. laughed at C. lived withD. relied on()4. Finally, Jack operated the machine successfully.A. madechangeB. madeworkC. maderestD. madestop()5. Whats the price of this computer?A. How many isB. How do you like C. Why do you buyD. How much is()6. Look! The tiny baby over there

39、 is so cute!A. very lovelyB. very smallC. very bigD. very old()7. My mother used to work as a teacher in the village.A. likeB. beC. be likeD. have()8. This machine is very expensive.A. costs a little moneyB. looks beautifulC. costs a lot of moneyD. doesnt cost much()9. Jack works hard. In addition,

40、he is kind to his friends.A. For exampleB. Besides C. In addition to D. HoweverII.單項(xiàng)選擇題()1. Taking buses in Beijing is _ than _ a taxi.A. more cheap; takingB. much cheaper; takingC. a little cheap; to takeD. a little cheaper; to take()2. _, Shenzhen was still a small village.A. In 1840sB. In the yea

41、r of 1840sC. In the 1840D. In the 1840s()3. Im hungry now. Lets stop _.A. having a meal B. to have a mealC. having a restD. to have a rest()4. -whats the _ of this new train?- Its _ 200 km per hour.A. price; at the speed ofB. price; in the speed ofC. speed; in the speed ofD. speed; at the speed of()

42、5. Thank you for _ us with the task. I look forward to _ with you next time.A. helping; working B. to help; work C. helping; workD. to help; working()6. Are you feeling _ today?Im afraid not. Its _ day since I got ill.A. good; the worstB. better; worseC. well; the bestD. better; the worst()7. Ken is very generous(有天賦的). _, he is skillful in playing chess.A. In additionB. In fact C. HoweverD. Suddenly()8. Do you know what _ the girl in the film?Yes. She _ too much _ her parents and was unable to do anything by herself.A. happened with; depende