广州新版八年级上册Unit3Computers

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 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 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 = bedependent on译：she depends on us to help her.Our plan depends on the weather.puters almost never give wrong answers.:almost never = hardly 意为“几乎不”辨析：hardly和hard?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 doto 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 drinkThere is a warm clothes to live in.例：---Why don’t you go out to play, Rose—---I’m afraid I can’t. I have much ho mework .A doB doesC doingD to do8. What were the first computers likeWhat + 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 like 与what does sb look like“某人如何”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·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.② sb need to do sth 某人需要去做某事例：He needs to have a good rest.③ sth need doing 某物需要被... 例：My bike needs repairing.④ needn’t 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；great long2) 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 fat6) 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------best~many------more------mostmuch------more------mostlittle-----less----leastbad/ill------worse------worstfar------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 important 最不重要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 one3. 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：It's 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 buildB buildingC buildsD huilt2.--- How often does Bob play .A Every day.B For a year.C A week agoD A month later.3.--- Would you like TV--- I’d love to, but I have lots of homework to do.'A watchingB to watchC seeingD to see4.We’re looking forward the football game tomorrow.A toB atC onD of5.I’m hungry now. Let’s stop .A having a mealB having a restC to have a mealD to have a rest6. That beautiful skirt is cotton.A made ofB made intoC made fromD made up of7. What shall we if we go for a picnic？A bringB takeC carryD get?8. This box is___ that one.A. heavy thanB. so heavy thanC. heavier asD. as heavy as9. When we speak to people, we should be ' .A. as polite as possibleB. as polite as possiblyC. as politely as possibleD. as politely as possibly10. This book is____ that one, but____ than that one.A. as difficult as; expensiveB. as more difficult as; more expensiveC. as difficult as; more expensiveD. more difficult as; as expensive11. I think the story is not so ___ as that one.A. interestingB. interestedC. more interestingD. most interesting12. His father began to work____ he was seven years old.A. as old asB. as early asC. sinceD. while13.. I think science is ____ than Japanese.A. much importantB. importantC. much more importantD. more much important14. This pencil is_____ than that one.A. longestB. longC. longerD. as long15. My mother is no ______ young.A. shorterB. longerC. littleD. few16. These children are ________ this year than they were last year.A. more tallB. more tallerC. very tallerD. much taller$17. It was very hot yesterday, but it is______ today.A. even hotterB. more hotterC. much more hotD. much hot18. Mrs Black has got______ instead of getting any better.A. more badB. a little worseC. much badlyD. 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 don’t 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. and C. or D. so( )2. A. make B. send C. give D. write( )3. A. we B. you C. they D. I( )4. 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( )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 familiar with computers—computers 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 Arethese children lucky or notMany 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 and think for themselves. And for the future, don’t we need people who can think clearly, who know how to get information quickly and use it well What do you think1. “To be familiar with” means to ______.A. know nothingB. know aboutC. dislikeD. like2. Does everyone think computers are good for childrenA. Yes, they do.B. No, not everyone thinks so.C. They don’t know.D. They are not sure.3. What can computers help children to doA. To think clearly, to do homework and 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 thingA. 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}1、in the 1940s 在20世纪90年代的时候 =in the 1940's3、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。