广州新版--八年级上册Unit-3--Computers

1、Unit 3 Computers课文重难点详解1. In the 1940s, the first computers were bigger than cars.in the 1940s 意为 在 20 世纪 40 年代”例：在 20 世纪 50 年代_表示在某个年代初期或末期，可以在年份前加early 或 late. 例: in the early1940s2. You may be unaware of them.be unaware of 意为 朱察觉，没有意识到”译：那个男孩没有意识到危险。_3. There is probably_one in side your TV or wa

2、sh ing machi ne.one 此处用作代词，用于泛指前面提到过的名词。辨析：one 和 itone泛指上文提到的同类事物中的一 个I lost my pen. 1 must buy one.it特指上文提到的同一物品The coat is hers. It s very beautif例 :The banana pie tastes delicious. Could I have anotherA oneB itC thisD that4. You depend on computers more than you realize.depend on 意为依靠，指望”主语可以是人，也

3、可以是物，其含义有所不同 人（依靠 *depe nd onL物取决于dependent adj. 依赖的， 反义词：independent 独立的” depend on = be dependent on译：she depends on us to help h _Our pla n depe nds on the weather.5. Computers almost never give wrong answers.almost never = hardly 意为 几乎不” 辨析：hardly 和 hardhardly几乎不”Alice hardly wears skirts.hard努力

4、地，困难地，猛烈地”It rained very hard last ni ght.6. However, one day computers may be able to do a better job tha n huma n bein gs.be able to 意为 能够”，后接动词原形。7. Will we have nothing to do?to do 为动词不定式，此处用来修饰 n othi ng,如果不定式中的动词是不及物动词，需要带上必要的介词。例: Do you want somethingto drink?There is a warm clothes tolive i

5、n.例：-Why don t you go out to play, Rose?-1 m afraid I can t. I have much homework .A doB doesC doingD to do8. What were the first computers like?What + be +主语+ like?意为“.怎么样？ ” , like 是介词，意为 像，相似译：今天天气怎么样？ _辨析： what s sb like, what does sb lik 与 what does sb look likeWhat s sb like某人如何”用于询问某人的性格，品质等W

6、hat does sb like某人喜欢什么”用于询问某人的爱好What does sb look like某人长什么样”用于询问某人的外貌9.Some young people always need help from their pare nts.n eed 用法总结：need sb/ sth 需要某人或某物例: I need a pen to write with.2sb need to do sth 某人需要去做某事例：He needs to have a good rest.3sth need doing 某物需要被.例: My bike needs repairing.4need

7、n 用来回来 Must 提出的问句 例：-Must I bring my homework now? -No, you needn t.重点语法：形容词的比较级和最高级分为规则变化和不规则变化规则变化如下：1）单音节形容词的比较级和最高级形式是在词尾加-er 和-est 构成；greatlong2）以-e 结尾的单音节形容词的比较级和最高级是在词尾加-r 和-st 构成；widenice3）以辅音字母+y 结尾的形容词，比较级和最高级是把 y 去掉，加上-ier 和-est 构成；happyempty5）辅元辅的形容词， 比较级和最高级是双写该辅音字母，再加-er 和-est;bigfat6）

8、部分双音节和多音节形容词，比较级和最高级需用 more 和 most 来构成。beautifuldifficult常用的不规则变化的形容词的比较级和最高级good/well- better- bestmany- more- mostmuch- more- mostlittleless-least bad/ill worseworstfar- farther/ further-farthest/furthestold-older/elder- oldest/eldest形容词前如加 less 和 least 则表示较不和最不important 重要less important 较不重要least

9、 important 最不重要形容词比较级的用法1.两者比较时用形容词比较级，其结构为“比较级+than .女口： Actions speak louder than words.or .?女口： Which sweater is cheaper, the red one or the yellow one?3. 表示 两者之间最的一个”时，用“the +比较级”女口： Lucy is the taller of the twins.4. 表示 越.，越.”时，用“the + 比较级，the +比较级女口： The more you eat, the fatter you will becom

10、e.5.表示 越来越”时，用比较级+ and +比较级”，多音节词和部分 双音节词用 “ more and more 形容词原级”女口： We should make our country more and more beautiful.6.形容词比较级前可以用下列词修饰：much, a little, far, a bit, a few, a lot, eve n,still, rather 等如：Its much colder today than yesterday.表示 最.之一”时，用“one of + th+最高级”2.在两者之间选择 哪一个更”时，用句型Which/ Who i

11、s + 比较级,如: The light bulb is one of the most helpful inventions.Unit 3 同步练习1. The workers spent two years_ my house.A buildB buildi ngC buildsD huilt2. - How often does Bob play tennis.-_ .A Every day. B For a year. C A week ago D A month later.3. - Would you like _ TV?- I d love to, but I have lots

12、 of homework to do.A watch ingB to watchC see ingD to see4. we re looking forward_ the football game tomorrow.A. heavy tha nB. so heavy tha nC. heavier as D. as heavy as9. Whe n we speak to people, we should be .A. as polite as possibleB. as polite as possiblyC. as politely as possible D. as politel

13、y as possibly10. This book is_that one, but_ tha n that one.A. as difficult as; expe nsiveB. as more difficult as; more expe nsiveC. as difficult as; more expe nsiveD. more difficult as; as expe nsive11. I think the story is not so_ as that one.A. i nteresti ngB. i nterestedC. more in terest ingD. m

14、ost in terest ing12. His father bega n to work_ he was seve n years old.A. as old as B. as early as C. since D. while13. I think scie nee is_tha n Japa nese.A toB atC on5. I m hungry now. Let s stop .A having a meal B having a rest C to have a meal6. That beautiful skirt is_cott on.A made ofB made i

15、ntoC made from7. What shall we_ if we go for a pic nic?A bringB takeC carry8. This box is that one.D ofD to have a restD made up ofD getA. much importa ntB. importa ntC. much more importa nt D. more much importa nt14. This pen cil is_tha n that one.A. I on gestB. l ong C. Ion ger D. as long15. My mo

16、ther is no_ young.A. shorter B. lo nger C. little D. few16. These childre n are_ this year tha n they were last year.A. more tall B. more taller C. very taller D. much taller17. It was very hot yesterday, but it is_today.A. eve n hotter B. more hotterC. much more hot D. much hot18. Mrs Black has got

17、_ in stead of gett ing 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 uncleoften 2 emails to each other. Sometimes 3 chat (聊天) online.My mother is a 4 in a middl

18、e school. She often 5 the computer for her less ons. Shealso gets in formati on for her less ons 6the Intern et.My brother and I like to 7 computer games. I like to play Counter Strike, but he likesto play Tomb Raider. My 8 don ltke us to play them too long. They say that play ingcomputer games too

19、long is bad for our 9 and study. We both like 10, too. Sosometimes we download songs from the Internet to our MP3players.()6. A. inB.onC. withD. at()7. A. makeB.doC. playD.get()8. A. pare ntsB.frie ndsC. fatherD. mother()9. A. legsB. earsC. eyesD. faces()10. A. musicB.En glishC. filmsD. books阅读理解We

20、are already familiar with computers computers work for us at home, inoffices and in factories. But it is also true that many children today are using computersat schools before they can write. What does this mea n for the future? Are these children lucky or not?Many people who do not know about comp

21、uters think of them as mach ines thatchildre n play with. They worry that childre n do not lear n from experie nee but just frompress ing a butt on and that this is not good for them. They thi nk that childre n are growing not knowing about the real world.But people who un dersta nd more about compu

22、ters say that computers can bevery good for childre n. A computer can help them to learn about the real world morequickly, to lear n what they want to lear n and thi nk for themselves. And for the future,don we need people who can think clearly, who know how to get information quicklyand use it well

23、? What do you thi nk?1.“To be familiar with ” means to_ .A. know nothingB. know aboutC. dislikeD. like2. Does every one thi nk computers are good for childre n?A. Yes, they do.B. No, not every one thi nks so.C. They don t know.D. They are not sure.()1. A. butB. and()2. A.makeB. sendC. orD. soC. give

24、D. writeC. theyD. IC. stude ntD. studentC. usesD. does3. What can computers help childre n to do?A. To thi nk clearly, to do homework and to write.B. To play games, to do math and to copy.C. To thi nk clearly, to get in formatio n and to use it well.D. To count, to clea n the house and to get in for

25、matio n.4. Does the writer thi nk computer is a good thing?A. We don t know. B. No, he doesn t think so.C. He doesn t know. D. Yes, he does.一、短语知识点总结I、 in the 1940s 在 20 世纪 90 年代的时候 =in the 1940s3、 smaller and smaller 越来越小比较级+比较级 越来越4、be unaware of 没意识至 U .5、in side prep.在. 里面6、 depend v.依靠，依赖 depen

26、dent adj.依赖的，依靠的； dependable adj.可靠的 depe nd on/upon 依靠，依.而定depend on it 毫无疑问，没问题 It all depends.这也难说，要看情况而定。7、do with处理（与 what 搭配）deal with处理（与 how 搭配）8、at a faster speed 以（用）一个更快的速度用工具 with hands/ears/eyes/computers用声音 in a low voice用语言 in English用材料 in ink,pen以价格 at the high price以速度 at a full sp

27、eed9、give wrong answers = give a wrong answer 给出错误的答案10、with prep.和.人一起 具有. 用.II、 addition n.力卩法，增加物 in addition= besides 另夕卜 in addition to= as well as除了之外12 like v.喜欢 prep.像.like sth 喜欢某物 like to do sth = like doing sth 喜欢做某事13、one day（过去或将来的）某天 some day 将来的）某天 14、be able to do sth = can能够做某15、 Fo

28、r example 例如（一个例子） Such as 例如（多个例子）16、be better at doing sth 更擅长做某事 be good at doing sth 擅长做某事 be goodfor.对有好处 be good to.对友好17、have nothing to do 无事可做18、make v.制作，使得，让 make sb do sth.使得某人做某事 make sb adj 使得某人19、fact n.事实，真相 In fact 事实上，其实=As a matter of fact 事实上，其实二、More Practice1. Thank you/ thanks

29、 for （doing） sth 因.而感谢某人2. With +n./prep/doing 有. Without+n./prep/doing 没有. ，缺乏.3.On the In ternet 在网上4.Used to do sth 过去常常做 .Be used to doing sth 习惯做某事5.Sb spend time/money on sth 某人在某物上花钱/时间Sth costs moneys 物花钱Pay for sth 为某物付钱It takes sb some time to do sth 花某人多少时间做某事6. In fron t of 在.的前面（范围之外）In

30、the fro nt of 在. 的前面（范围之内）7.Be bad for 对.有害8.Give some advice 给建议9.Hope for sth 希望得到某物 Hope to do sth 希望做某事 Hope（that）+句子希 望10.Stop to do sth 停下来去做某事（做别的事）Stop doing sth 停止做某事（停 止正在做的事）Stop sb from doi ng sth 阻止某人做某事11. By doi ng sth 通过做某事12. Have to 不得不. （客观的）Must 必须（主观的）13. How often 多久一次（问频率）14.

31、Much +比较级的多15. One of + 最高级+n .（PI.）.之一16. Become +adj 变得.17. Look forward to （介词） 期望. 在介词后面加动词，都加动词的 ing 形式。三、同步讲与练1. Stop work ing ! Let stdp sto have lun ch.1. Stop_ ! Our teacher is comi ng. A. talk B. to talk C. talki ng D. talked2. On my way home, I met an old friend and stopped_a talk.(have)2

32、. They ll olgive 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。give (sb) some advice on how to do-关于某方面的建议(advice 不可数)怎样做 某事(必须接宾语)=give (sb) some advice on doing-1.王教师昨天给了我们一些如何学好英语的建议.Dr Wang gave us_En glish well.2. I don t know_ the computer.A. what to use B. what using

33、 C. how to use D. how using3. I hope we can all work together to stop stude nts from spe nding too much time playiA.took; to readB. paid; for read ing C. spe nd; readi ngD. spe nt; onng computer games.(p.45)stop sb. from doing 阻止某人做-sb. spe nd some time on/(in) doing 某人花钱、花时间做某事1. 我们的环境越来越差了，我们应该阻止人

34、们砍伐树木。Our en vir onment is beco ming worse and worse, we should _ people_ dow n trees.2. Tom_ two days_ the story.四、同义词/同义句：tiny = very small 极小的expe nsive = dear = not cheap = costs a lot of mone 昂贵的be unaware of sth = be not aware of = don t know =没有察觉 realizebe aware of sth = know = realize 意识至 U

35、 operate = make work depe nd on = rely on依赖in additi on = besides = what匕外 morebe able to do = can do 能够做某事grand total = full amount 总额We can type and draw thi ngs with computers.=We can use computers to type and draw thin gs.Mary is taller tha n any other girl in our school.=Mary is the tallest gir

36、l in our school.IV 词型变化order (n)- order (v)compare (v) - comparison (n)mouse - mice (pl.)type (v) - typer 打字机 typist 打字员(n)calculate (v) - calculation 计算 calculator 计算器(n)operate (v) - operation (n)sell-sold-sold (v)- sale (n) salesmandepend - dependent 依赖的(adj) -dependence 依赖(n)-independent 独立的(adj

37、) -independence 独立(n)I.同义词()1.1 am sorry that I am unaware of the mistake.A. don t knowB. don t care about C. knows a little about D. knows a lotabout()2. Could you tell me the grand total?A. little time B. large nu mber C. whole work D. full amount( )3. When I was young, I always depended on others

38、.A. made frie nds with B. laughed at C. lived withD. relied on()4. Fi nally. Jack operated the machi ne successfully.A. made changeB. made work C. made rest D. made stop()5. What s the price dhis computer?A. How many is B. How do you like C. Why do you buy D. How much is ( )6. Look!The tiny baby ove

39、r there is so cute!A. very lovely B. very small C. very big D. very old( )7. My mother used to work as a teacher in the village.A. like B. be C. be like D. have( )8. This machi ne is very expe nsive.A. costs a little money B. looks beautifulC. costs a lot of money D. doesn t cost much( )9. Jack work

40、s hard. In addition, he is kind to his frie nds.A. For exampleB. Besides C. In additi on to D. HoweverII.单项选择题()1. Taking buses in Beiji ng is_tha n_a taxi.A. more cheap; tak ingB. much cheaper; tak ing C. a little cheap; to take D.a little cheaper; to take()2._, She nzhe n was still a small village

41、.A. In 1840s B. In the year of 1840sC. In the 1840 D. In the 1840s()3. I m hungry now. Let s stop_.A. hav ing a meal B. to have a meal C. hav ing a restD. to have a rest()4. -what s the_ of this new trai-?lt s_ 200 km per hour.A. price; at the speed of B. price; in the speed of C. speed; in the spee

42、d of D. speed;at the speed of()5. Thank you for_ us with the task. I look forward to_ with youn ext time.A. helping; working B. to help; work C. helping; work anythingby herself.A. happe ned with; depe nded; on B. happe ned with; depe nded; withC. happe ned to; depe nded; at D. happe ned to; depe nded; on()9._ you lose,_you will be.A. The more; the happiest B. The more; the happier C. The less; the happiestD.many thi ngs; happyIII.词形填空I. 1 am a_ (type), and I always type things with this_(type).2. Ken