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此文档收集于网络,仅供学习与交流,如有侵权请联系网站删除Unit 3 Computers词汇及扩展单词&短语词性中文扩展1ordern.2comparev.3speakern.4typev.5controlv.6expensiveadj.7tinyadj.8dependv.9operatev.10companyn.11pricen.12totaln.13sellv.14popularadj.15work as16(be) unaware of17depend on18grand total19look forward to20in addition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 early 1940s2. You may be unaware of them. be unaware of 意为“未察觉,没有意识到” 译:那个男孩没有意识到危险。 3. There is probably one inside your TV or washing machine. 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. 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意为“依靠,指望”,主语可以是人,也可以是物,其含义有所不同。人依靠 depend on 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 her. Our plan depends 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“努力地,困难地,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nothing,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 something to drink?There is a warm clothes to 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:whats sb like, what does sb like 与what does sb look likeWhats sb like“某人如何”用于询问某人的性格,品质等What 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 parents. need 用法总结: 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 repairing. neednt 用来回来Must 提出的问句 例:-Must I bring my homework now? -No, you neednt.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; great long 2) 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; wide nice 3)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; happy empty 5) 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; big fat 6) 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。 beautiful difficult 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-most little-less-least bad/ill-worse-worst far-farther/ further-farthest/furthest old-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 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 .”如:Actions speak louder than words.2. 在两者之间选择“哪一个更”时,用句型 “Which / Who is +比较级, . or .?” 如: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”如:Lucy is the taller of the twins.4. 表示“越,越”时,用“the + 比较级,the + 比较级”如:The more you eat, the fatter you will become.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”如: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, even, still, rather等如:Its much colder today than yesterday.表示“最之一”时,用 “one of + the + 最高级”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 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. - Would 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 cotton. 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 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. 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 one. 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 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. 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 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. teacher 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阅读理解We are already familiar with computerscomputers work 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 play 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 computer can help them to learn about the real world more quickly, to learn what they want to learn
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