牛津深圳版八年级英语上册课件Unit 3 Computers （共45张PPT）

课件45张PPT。Unit 3 ComputersModule 2 Science and technology自主预习一、根据汉语写出英文单词
　　1. (计算机)显示器 (n.) _________________
　　2. 扬声器 (n.) _________________
　　3. 打字(v.) _________________
　　4. 受喜爱的；受欢迎的 (adj.) _________________
　　5. 操纵；控制 (v.) _________________
　　6. 依靠；依赖 (v.) _________________
　　7. 极小的；微小的 (adj.) _________________
　　8. 昂贵的；价格高的 (adj.) _________________
　　9. 比较；对比 (v.) _________________
　　10. 操作；控制 (v.) _________________
　　11. 总额；合计 (n.) _________________
　　12. 订货；订购 (n.) _________________monitorspeakertypepopularcontroldependtinyexpensivecompareoperatetotalorder二、根据汉语写出下列词组
　　1. 依靠 _____________________
　　2. 总计；共计 _____________________
　　3. 盼望；期待 _____________________
　　4. 除……之外（还） _____________________
　　5. 怎样处理 _____________________
　　6. 玩电脑游戏 _____________________
　　7. 没意识到；未察觉 _____________________
　　8. 从事……工作 _____________________depend ongrand totallook forward toin additionwhat...do withplay computer games(be) unaware ofwork as三、翻译下列句子
　　1. 现在电脑正变得更小、更好。
　　__________________________________________
　　2. 你对电脑的依赖程度比你意识到的要深得多。
　　__________________________________________
　　3. 它们能比我们计算得更快,而且几乎从不出错。
　　__________________________________________
　　__________________________________________
　　4. 此外,电脑还能做一些重要的工作,例如操控铁路系统,驾驶飞机和宇宙飞船。
　　__________________________________________
　　__________________________________________
　　5. 例如,它们可能比人类(医生)更胜任医生这种工作。
　　__________________________________________
　　__________________________________________Now computers are becoming smaller and better.You depend on computers more than you realize. They can calculate at a faster speed than we can and almost never give wrong answers. In addition, computers can do important jobs like operating railways and flying planes and spaceships. For example, they may be better than doctors at doing their job.词汇精析【1】order　n.a request for goods 订货，订购; a condition of regular or proper arrangement 顺序；秩序
　　We’ve received an order for three tons of coal. 我们已经收到了两吨煤的订单。
　　Please arrange in alphabetical order. 请按字母顺序排列。 【拓展】
　　(1) keep sth. in order 使某物有次序
　　It’s not easy for the teachers to keep their classes in order. 教师要把课堂秩序维持好是不容易的。
　　（2）order还可以作动词，意为“命令；订购；点餐”，order sb. to do sth. 命令某人做某事
　　He ordered them to start the work at once. 他命令他们马上开始工作。
【应用】
(1) He ordered the enemy soldiers __________ (put) down their guns.
(2)(　　)Please keep all the items order.
　　A. in B. out of C. with to putA【2】compare　v. find out the similarities or differences between things 比较；对比
　　You should compare the prices before you buy something. 你应该在买东西前比较一下价格。
【同根词】
　　（1）comparative adj. 比较的
　　Why don’t we do some comparative advertising？我们为什么不能做一些对比广告呢？
　　（2）comparison n. 比较；对比
　　He wrote a paper on the comparison between Chinese culture and American culture. 他写了一篇关于中国文化和美国文化的比较的论文。【拓展】
　　(1) compare...with... 把……与……作比较
　　Compare your lifestyle with his, his is healthier. 用你的生活方式与他的比较，他的更健康。
　　(2) compare...to... 把……比喻成……
　　People often compare young people to the rising Sun. 人们常把年轻人比喻成正在升起的太阳。【应用】
(1) There is no ______________ (compare) between the two.
(2) (　　)Compare this car ______ that one, and you will find the differences between them.
　　A. to B. with C. for
(3) (　　) This song compares our country a big family.
　　A. to B. with C. forcomparisonBA【3】speaker　n. someone who talks （especially someone who has a public speech）演讲者; a piece of electrical equipment, for example part of a radio or set of equipment for playing CDs or tapes, through which sound comes out 扬声器
　　The sounds of the guitar are sent through the speaker. 吉他的声音通过扬声器传送出去。
【同根词】
　　（1）speak v. “说；讲”，其过去式为spoke，过去分词为spoken。
　　I rang the hotel and spoke to Louie. 我打电话给宾馆，跟路易通了话。
　　（2）speech n. 演讲；讲话
　　His speech inspired the soldiers with courage.他的讲话激发了战士们的勇气。【拓展】
　　speak，tell与say的用法区别
　　（1）习惯用法：
　　①表示“演说；演讲；发言”等，一般用 speak。
　　Who is going to speak at the meeting? 谁将在会上发言？
　　②表示“讲故事；说谎”等，一般用 tell。
　　He often tells us interesting stories. 他经常给我们讲有趣的故事。
　　tell a story讲故事tell the truth说实话
　　③表示“说某种语言”，一般用 speak。
　　Do you speak French? 你会说法语吗?　　（2）tell可意为“讲述；告诉”。 tell sb. sth. 意为“告诉某人某事”；tell sb. （not）to do sth. 意为“告诉某人（不要）去做某事”。
　　（3）talk 一般为不及物动词，意思是“交谈；谈话”，着重强调两者之间的相互说话。talk常用短语为talk about。
　　（4）say一般用作及物动词，着重强调说话的内容，它的宾语可以是名词、代词或宾语从句。
　　He can say his name. 他会说他的名字。
　　Please say it in English. 请用英语说。
　　She’s saying， “Don’t draw on the wall.” 她在说：“别在墙上画。”【应用】
（1）The first __________（speak）began to talk, very fast and rather loudly.
（2）When she was young, she __________（speak）English in the USA. speakerspoke【4】 control v. to use power to manage or command 操纵，控制（机器或系统等）
　　You must learn to control your temper. 你必须学会控制你的脾气。 【拓展】
　　(1) lose control 失去控制
　　You shouldn’t lose control. 你不应该失控。
　　(2) out of control 失去控制
　　The plane is out of control. 飞机失控了。
　　(3) under control 处于控制之下
　　The fire has been brought under control. 火势已受到控制。
　　(4) under one’s control 在某人的控制下
　　During the World War II, the area was under the control of the US Navy. 二战期间，这一地区被美国海军所控制。
【应用】
(　　)Everything is ______ control.
　　A. on B. out C. underC【5】depend　v. to need the help of someone, or to trust that someone will do something 依靠；依赖
　　All living things depend on the Sun for their growth. 万物依靠太阳生长。
【同根词】
　　（1）dependent adj. 依赖的
　　Children are totally dependent on their parents for food and shelter. 小孩子完全依赖父母提供食宿。
　　(2)dependence n. 依靠
　　He lived in a state of dependence on his friend’s help. 他依靠朋友的帮助而生活。　　(3)independent adj. 独立的
　　We should learn to be independent. 我们应该学会独立。
　　(4)independence n. 独立
　　He was afraid of losing his independence.他担心丧失自己的独立。
【拓展】
　　depend on 依靠；依赖；取决于。当意为“依靠”时，相当于rely on；意为“取决于”时，相当于be decided by。
　　You can depend on her，because she always keeps her promises. 你可以信赖她,因为她一向都是信守诺言的。
　　How much it costs depends on how much you buy. 价钱取决于你买多少。【应用】
(1) (　　)The little boy always depends on his mother. (选出可以替换画线部分的最佳选项)
　　A. relies on B. is decided by C. believes in (2) India gained ________________ (depend) from Britain in 1947.
(3) All is _____________ (depend) on your decision.Aindependencedependent【6】operate　v. to control the working of something, make something work 操作，控制；cut open a patient’s body in order to remove, replace, or repair a diseased or damaged part 做手术
　　Could you tell me how to operate this machine? 你可以告诉我怎样操作这部机器吗？
　　The doctor operated on his arm last week. 医生上周给他的手臂做了手术。
【同根词】
　　operation n. 操作；手术
　　The operation of this machine is simple. 这台机器的操作很简单。【拓展】
　　operate on sb. 给某人做手术
　　Who did you operate on last night? 你昨晚为谁做过手术?
【应用】
(1) You need a good rest after the __________ (operate).
(2) (　　)The doctors decided to operate her immediately.
　　A. on B. with C. about operationA【7】price　n. the amount of money needed to purchase something 价格
　The price of the house is very high. 这房子的价格很高。
【拓展】
　　(1) at the price of 以……的价格
　　She bought the new dress at the price of 10 dollars. 她以10美元的价格买了这条新裙子。
　　(2) at a price 以相当高的价格；付出很大的代价
　　Tickets are still available, but at a price. 门票依然有售，只是票价很高。
　　(3) What’s the price of sth.?=How much is sth.?=How much does sth. cost? 某物的价格是多少？【应用】
(1) (　　)Have you agreed to sell him the goods ______ such a price?
　　A. in B. for C. at
(2) What’s the price of the mobile phone? (改为同义句)
　 ___________________________________________
　___________________________________________CHow much is the mobile phone?/How much does
the mobile phone cost?【8】sell　v. exchange or deliver something for money or its equivalent 出售；售卖
　　sell的过去式和过去分式分别为sold, sold。
　　What does the shop sell? 这家商店出售什么？
【同根词】
　　 sale n. 销售额 on sale 打折 for sale 出售
　　These goods are entirely unfit for sale. 这些货物完全不宜销售。【拓展】
　　sell既可以作及物动词，也可以作不及物动词。意为“卖得好”时，作不及物动词，用sell well表示；意为“卖光了”时，作及物动词，用sth. be sold out表示。
　　The kind of oranges sells well. They have been sold out. 这种橙卖得很好,已经全部卖光了。
【应用】
(　　)Sorry, the shirts in your size have _____.
　　A. sold out B. sold up C. been sold outC【9】popular　adj. be enjoyed or liked by many people 受喜爱的；受欢迎的
　　Her kindness made her popular. 她的友善使她备受欢迎。
【同根词】
　　popularity n. 普及;流行;名气
　　He gained popularity among his students. 他赢得了学生们的喜爱。【拓展】
　　be popular with / among 受……的欢迎
　　Most people would like to be popular with/among others. 大部分的人都想受到他的人欢迎。
【应用】
(1) (　　)Apple’s products are popular young people.
　　A. in B. with C. for
(2) Her books have grown in __________ (popular) recently. Bpopularity【10】(be) unaware of=doesn’t know, doesn’t realize 没意识到；未察觉
　　He was unaware of my presence.=He was unaware that I was present.他不知道我在场。
【拓展】
　　be aware of意识到；察觉
　　Are you aware of the time? =Do you know the time?你知道是什么时候了吗?
【应用】
(　　)He is unaware of the importance of study. (选出可以替换画线部分的最佳选项)
　　A. knows B. doesn’t realize C. pays attention toB【11】in addition=besides=what’s more除……以外（还）
　　I met some friends and other people in addition. 我遇到了几位朋友，还遇到了其他人。
【拓展】
　　(1) in addition=besides=what’s more 此外；而且
　　In addition, you can share your files with others.=Besides, you can share your files with others.=What’s more, you can share your files with others. 此外，你还可以和其他人共享你的文件。
　　(2) in addition to意为“除了……之外”，后接名词或动名词。
　　In addition to giving me some advice, he gave me some money. 他不仅给我提了一些忠告，还给了我一些钱。　　(3) A+in addition to+B作主语时，谓语的单复数形式与A保持一致。
　　The professor in addition to his assistants is going to attend the meeting this weekend. 这个周末教授和他的助手们将参加会议。
【应用】
(1) (　　)We saw a cartoon in addition to a film. (选出可以替换画线部分的最佳选项)
　　A. except B. but C. besides
(2) (　　)In addition, we should plant more trees to protect the environment. (选出可以替换画线部分的最佳选项)
　　A. Beside B. More or less C. What’s more CC【12】look forward to=expect=live for （后接名词或动名词）盼望；期待
　　I am looking forward to the trip to America. 我正期待着这次美国之行。
【应用】
I look forward to __________ (meet) you at the airport.meeting【13】be better than...at...比……更擅长……
　be good at 意为“擅长……”，be better than...at...意为“比……更擅长……”，at后面接名词或动名词。
He is better than me at swimming. 游泳方面他比我更擅长。
【拓展】
　　be good at的近义词组为do well in, be better at的近义词组则为do better in。
　　Do you believe that only boys do well in science? 您认为只有男孩才能在科学上有所建树吗？
【应用】
（　　）—Are you good at ?
　　—No, I’m good at .
　　A. write; chess B. writing; chess C. writing; singB语法梳理语法精讲有关形容词和副词的比较级、最高级的用法
　　1. 形容词和副词的三级用法
　　（1）原级: as+形容词或副词的原级+as， 意为“和……一样”; 否定用 not as/so...as。
　　The room is as big as mine. 这个房间和我的（房间）一样大。
　　He doesn’t run as/so fast as me.他没有我跑得快。
　　（2）比较级
　　①比较级的明显标志有than, A or B等。
　　He is younger than me. 他比我年轻。
　　Who is taller, your father or your uncle? 你爸爸和你叔叔谁更高?　　②a bit, a little, much, far, many, a lot, a great deal, any, even等词可以用来修饰比较级。
　　He did much better than his brother. 他比他的兄弟做得好得多。
　　Mike is tall, and Mark is even taller than him.迈克很高，而马克甚至比他更高。
　　③比较级+比较级,意为“越来越……”。
　　His family becomes richer and richer. 他家变得越来越富有。
　　The garden is more and more beautiful. 这个花园越来越漂亮了。
　　④“the+比较级+主语+谓语, the+比较级+主语+谓语”意为“越……，越……”。
　　The more money you make, the more you spend. 你钱赚得越多,就花得越多。　　（3）最高级
　　①最高级的明显标志有of the three (four, five...), of all, in the class（family, country）, A, B or C等。形容词的最高级前面通常要加定冠词the，而副词可以不加the。
　　I am the thinnest of the three. 我是三个人中最瘦的。
　　Who is the youngest, you, he or she? 你,他和她中,谁最小?
　　②“one of+the+最高级+复数可数名词”结构，意为“最……的……之一”。
　　Jack is one of the best students in our class. 杰克是我们班最好的学生之一。
　　③“the+序数词+形容词最高级” 表示在某个范围内的第几位。
　　The Yellow River is the second longest river in China. 黄河是中国第二长河。　　2. 形容词和副词比较级、最高级的形式变化
　　（1）规则变化：单音节词和部分双音节词,在词尾加
-er 或-est。大部分双音节词和多音节词,在其前面加 more 或 most。
　　（2）一些常见的形容词、副词的比较级和最高级的不规则变化：
　　good/well—better—(the) best
　　bad/ill—worse—(the) worst
　　many/much—more—(the) most
little—less—(the) least 　　
　　old—older/elder—(the) oldest/eldest
　　far—farther/further—(the) farthest/furthest 　　3. 形容词和副词等级间的互相转换
　　（1）比较级换成原级
　　　　This story is more interesting than that one.
　　　　That story is not as/so interesting as this one.这个故事比那个故事更有趣。
　　（2）最高级换成比较级
　　He runs fastest in our class.
　　　　He runs faster than any other student in our class.
　　　　He runs faster than the other students in our class.他在我们班跑得最快。　　（3）表示倍数的用法
　　　　The room is three times as large as that one.
　　　　The room is three times the size of that one.
　　　　The room is twice larger than that one.这间房是那间房的三倍大。
　　4. 形容词和副词的比较级用法的误区
　　（1）比较对象非同类。
　　错误：Your classroom is smaller than us.
　　正确：Your classroom is smaller than ours. (ours=our classroom) 你们的教室比我们的大。　　（2）比较对象相包含。
　　错误：China is larger than any country in Asia.
　　正确：China is larger than any other country in Asia. 中国比亚洲任何(其他)一个国家都大。
　　（3）比较级前一般不能用定冠词the, 但如果比较级后面有名词则要用the。
　　Which is the larger country, Canada or Australia?
=Which country is larger, Canada or Australia? 加拿大和澳大利亚哪个国家大?
　　Jenny is the cleverer of the two girls.=Jenny is the cleverer girl of the two. 珍妮是两位女孩中更聪明的一位。直击中考(　　)1. —My teachers often encourage me ______ more friends but I find it difficult.
　　—Your teachers’ idea is right. The more friends you make, ______ you will be. (2014达州)
　　A. to make; the more happy
　　B. to make; happier
　　C. making; the happier
　　D. to make; the happierD(　　)2. Lucy is a(n)______ student, she answers the teachers’ questions in her class. (2014陕西)
　　A. more active; more actively
　　B. active; more actively
　　C. more active; the most actively
　　D. active; the most actively
(　　)3. The Yangtze River is one of ______ in the world.
(2014铜仁)
　　A. the longest rivers
　　B. the longest river
　　C. longer rivers
　　D. longer riverDA写作乐园话题三　谈论智能手机
【常用词组】
　　1. make telephone calls打电话
　　2. listen to music听音乐
　　3. watch videos看视频
　　4. play games玩游戏
　　5. use...to do 使用……做……
　　6. surf the Internet上网
　　7. more and more popular越来越普及
　　8. more and more convenient越来越方便【精彩句型】
　　1. It is becoming more and more popular now. 现在它变得越来越受欢迎。
　　2. It is smaller than computer.它比电脑小。
　　3. We can also use it to surf the Internet.我们也可以用它来上网。
　　4. It makes our life more and more convenient. 它让我们的生活越来越方便。
　　5. They are very important and useful in our daily life.它们在我们的日常生活中非常重要且有用。【短文写作】
　　智能手机（smart phones）越来越受欢迎，请根据下面的提示写一篇短文，介绍智能手机的好处。
　　提示：1.可以打电话，听音乐，看视频，玩游戏等；
　　2. 体积比电脑小， 但还可以上网；
　　3.价格比以前便宜很多；
　　4.它让我们的生活越来越方便。
　　要求：语意连贯，条理清晰，不少于70词。【范文赏析】
　　Smart phones are very important in our daily life and they are becoming more and more popular now. They are very useful. We can use them to make telephone calls, listen to music, watch videos, play games and so on. They are smaller than computers, but we can also use them to surf the Internet. They are much cheaper than before, so many people can buy them. Smart phones are a great invention. They make our life more and more convenient. 谢谢欣赏！