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 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
2、 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 it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
3、 dependent on 译：she depends on us to help her. one 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.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 we
4、ars 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 cl
5、othes 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
6、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
7、 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 nice3)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 empty5) 辅元
8、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 le
9、ast 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：Luc
10、y 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,
11、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 we
12、ek 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.
13、 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.
14、as polite as possiblyC. 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 expensiveC. as difficult as; more expensive D. more difficult as; as expensive 11. I think the story is not so _ as th
15、at 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 important14. This p
16、encil 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 taller17. It was very hot yesterday, but it is_ today.A. ev
17、en hotter B. more hotterC. 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 email
18、s 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 l
19、ike 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. and C. or D. so( )2. A. make B. send C. give D. write( )3. A. we B. you C. they D. I( )4
20、. A. doctor B. teacher C. student D. student( )5. A. plays B. buys C. uses D. does( )6. A. in B. on C. with D. at( )7. A. make B. do C. play D.get( )8. A. parents B. friends C. father D. mother( )9. A. legs B. ears C. eyes D. faces( )10. A. music B. English C. films D. books阅读理解We are already famili
21、ar 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 the
22、m 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
23、 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 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
24、 be familiar with” means to _.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 an
25、d to write. B. To play games, 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
26、语知识点总结1、in the 1940s 在 20 世纪 90 年代的时候 =in the 1940s 3、 smaller and smaller 越来越小比较级+比较级 越来越4、be unaware of 没意识到5、inside prep. 在里面6、depend v. 依靠，依赖 dependent adj.依赖的，依靠的；dependable adj. 可靠的 depend 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 h
27、ow 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 speed9、give wrong answers = give a wrong answer 给出错误的答案10、with prep. 和人一起 具有 用11、addition n. 加法，增加物 in addition= besides 另外 in addition to= as well
28、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、For 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 good for .对有好处 be good to.对友好17、have nothing to d
29、o 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 Practice1Thank you/ thanks for (doing) sth 因而感谢某人2With +n./prep/doing 有 Without +n./prep/doing 没有，缺乏3On the Internet 在网上4Used to do sth 过去常常做Be used to doing sth 习惯做某事5
30、Sb spend time/money on sth 某人在某物上花钱/时间Sth costs money 某物花钱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6In front of 在的前面 (范围之外） In the front of 在的前面（范围之内）7Be bad for 对有害8Give some advice 给建议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 停下来去做某事（做别的事） Stop do
31、ing 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. Much +比较级 的多15. One of +最高级+n.(Pl.) 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 working ! Lets stop to have lunch.1. Stop_! O
32、ur teacher is coming. A. talk B. to talk C. talking D. talked2. On my way home, I met an old friend and stopped _ a talk.(have)2. Theyll also give 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) som
33、e 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 _ _ _ _ _ _English well.2. I dont know _ the computer.A. what to use B. what using C. how to use D. how using3. I hope we can all work together to stop students from spending too much time playing computer games.(p.45)stop sb. from doing 阻止某人做-sb. spend 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，我们应该阻止人们砍伐树木。Our environment is becoming worse and worse, we should _ people _ _ down trees.
