高中必修2英语Unit3 Computers复习ppt课件

Unit3 Computers 必修2 Unit 3 晨读启航 基础梳理 重点突破 语法专练 单词积累 单词巩固 短语接力 短语巩固 句型荟萃 句型巩固 备课优选 应试技巧 晨读启航 基础梳理 1.    vt. 计算     n. 计算   n. 计算器 2.    vt. 简化     adj. 简单的    adv. 简单地 一、 单词回顾 calculate  calculation   calculator    simple   simply    simplify   基础梳理 3.   n. （电脑）操作员；接线员      vt. & vi. 运转；操作；经营；开刀     n. 运转；操作；经营；手术 4.   n. 工艺；科技；技术     adj. 科技的    n. 技巧     n. 技术专家    n. 技师 operator operate   operation  technology technological technique  technologist  technician  基础梳理 5.    n. 革命   adj. 革命的 n. 革命者 6.   n. 智力；聪明；智能     adj. 智能的；聪明的   adv. 聪明地 7.   vt. 解决；解答   n. 答案；解决办法 revolution revolutionary   intelligence   intelligent   intelligently solve solution 基础梳理 8.     n. 真实；事实；现实 adj. 真实的   adv. 真实地；真正地 9.   adj. 私人的；个人的；亲自的    adv. 就个人而言；亲自        n. 人格；个性   vt. 使个性化 reality real really personal personally personalize personality 基础梳理 10.     adj. 总的；整个的 n. 总数；合计 adv. 完全地；整个地 11.   n. 应用；用途；申请    vt. & vi. 应用；实施；申请 12.     vt. & vi. 探索；探测；探究     n. 探索；探测；探究 total exploration totally  application apply explore 基础梳理 13.     vi. & vt. 发信号 n. 信号 14.    n. 类型 vt. & vi. 打字   n. 打字员      n. 打字机 15.    adj. 电子的     adj. 电的      adj. 有关电的 signal electronic  type  electric typist typewriter  electrical 基础梳理 16.  n. 性格；特点     n. 特征；特性 character characteristic 二、 短语互译 1. 从……时起   from... on  2. 结果   as a result  3. 时光流逝   go by  4. 在某种程度上   in a way   5. 弥补；化妆；编造   make up  6. 和……有共同之处  have something in common  二、 短语互译 7. after all   毕竟  8. with the help of  在……的帮助下  9. deal with   处理；安排；对付  10. watch over   看守；监视  11. what‘s more   而且；除此之外  12. provide sb. with sth. 给某人提供某物  三、 句型精析 提炼1:it took...before结构 I developed very slowly and _____ _____ nearly two hundred years _______ I was built as an analytical machine by Charles Babbage. 我发育缓慢，差不多到了两百年之后，查尔斯•巴比 奇才把我制成了一台分析机。 it took before 三、 句型精析 提炼2： as引导时间状语从句  ______ time went by， I was made smaller.  随着时间的推移，我被做得越来越小。 As 三、 句型精析 提炼3：so that句型 Over time my memory has developed _____ ______ _____， like an elephant， I never forget anything I have been told！ 随着时间的推移， 我的记忆能力发展得如此之快，就像一头大象一样， 我从来不会忘记告诉我的任何事情！ so much that 三、 句型精析 提炼4： with的复合结构 Anyhow， my goal is to provide humans with a life _____ ______ ______ . 不管怎样，我的目的是为人类提供高质量的生活。 of qualityhigh 重点突破 单词积累 1.anyhow  adv.   无论如何;即使如此 重点突破 重点突破 （2013江西， 24）What a terrible experience！_______， you're safe now—that's the main thing. A. Anyway B. Besides C. Otherwise D. Therefore A 考查副词。此处考查表示上下连接关系的副词。anyway意为“ 不管怎样”；besides意为“此外；而且”；otherwise意为“否则 ”；therefore意为“因此”；根据句意可知A项正确。 。 重点突破 单词积累 2.signal vi. & vt. 发信号 n. 信号 signal （to） sb. to do sth. 示意某人做某事 signal to sb. 向某人示意 signal （sb.） that 示意（某人）…… 重点突破 Cyclists who give signals before turning or stopping help prevent accidents. （2012广东，完形填空） 骑车者在拐弯或停下来发出信号有助于防止事故发生。 重点突破 signal 意为“信号”，常指约定俗成、用于传达某些信息的 信号，也指灯光、声音或信号标志。 symbol 意为“象征；符号”，指被人们选出的物体或图案， 用来代表另一事物，并作为该事物的标记或象征。 sign 意为“记号，标记”，既可指符号，也可指情绪、性格 的直观显示，还指具体的用于识别或指示的标志，借喻 时作“征兆，迹象”讲。 mark 意为“标志，标记”，含义广泛，指事物留下的深刻印 迹或某物上用于辨别该物品的附属物，比sign更侧重于 区别性或揭示性的标志，有时不一定十分直观、明显。 重点突破 用signal， symbol， sign， mark填空 （1）A dove is often used as a ________ of peace. （2）Dark clouds are a ________ of rain or snow. （3）Make a ______ where you have any doubts. （4）A red light is a _______ of danger， which is even known to a five­year­old child. symbol sign mark signal 重点突破 单词积累 3.arise  vi . 出现；起身；起床；上升 重点突破 重点突破 Problems associated with environmental impact have also arisen. 与环境影响相关的问题也已经出现。 重点突破 用rise， raise， arise， arouse的适当形式填空 I ____________ my English level by working hard， which   ________ my interest in English. From this thing， I come to realize that when a problem ________， what matters most is to face it rather than give up. 通过努力学习我已提高了英语水平，这激起了我对英语的兴趣。 通过这件事，我意识到当问题出现的时候，最重要的是面对而不 是放弃。 have raised arouses arises 1. （2013金华十校模考）Many road accidents ________ from careless driving， according to the recent reports from the police. A. involve B. reduce C. arise D. increase 单词巩固 2. （2013合肥质检）Drive straight ahead， and then you will see a ________to the Hefei­Nanjing Expressway. A. sign B. mark C. signal D. board 单词巩固 3. I'm certain David's told you his business troubles. ________， it's no secret that he owes a lot of money to the bank.  A. However B. Anyway  C. Therefore D. Though 单词巩固 1. in ａ way  在某种程度上 in the way 挡路；妨碍 in no way 一点也不；决不 by way of 经由；通过……方法 on the way 即将到来 force/push one's way 强行挤出路来 make way for 为……让路 短语接力 （1）In a way， I'm glad you made that mistake， for it will serve as a warning to you. 在某种程度上， 你犯那个错误我感到高兴， 因为它对你也 是一种警示。 （2）The stone is ___________ . Remove it please. 石头挡住了道。请把它移走。  in the way   2.as a result 结果 （1）as a result意为“因此，结果”，为副词短语，常 作状语，使 用时前面常有一个表示原因的句子。 （2）as a result of为介词短语，相当于because of， 只能接名词、 代词、动名词及what引导的宾语从句。 （3）result in相当于lead to，意为“结果为……；导 致”，主语是 原因，宾语是结果。 （4）result from相当于lie in，意为“因为……”，主 语是结果，宾 语是原因。 短语接力 （1）As a result， the bad thing has been turned into a good one. 结果坏事变成了好事。 （2）The meeting had to be called off ______________the heavy rain  yesterday. 由于大雨昨天会议不得不取消。 as a result of   3.deal with 处理；安排；对付 （1）deal with sb. 对付某人；应付某人 deal with sth. 处理某事 （2）do with 处理；安排；对待；与……有关；（用 于 否定句中）容忍 短语接力 （1）When he started， he assumed that signs of the bends would be rarer in younger fossils， reflecting their gradual evolution of measures to deal with decompression. （2013 江苏，阅读理解C） 开始时，他假设弯曲变形的迹象在年轻的化石中会少见，这也反 映在针对减压的措施中他们的逐渐进化。 （2）She guessed that the letter_________________________ ___________ her husband. 她猜想这封信与她丈夫有关。 在表示“处理”时，deal with常与连接副词how连用， 而do with常与连接代词what连用。 ,   had something to do with   4.watch over 看守；监视 watch out （for） 密切注意；戒备；提防 keep （a） watch on 监视 be on the watch for 注意；小心；警惕 on/off watch 在/不在值班 watch one's step 小心地行走；谨慎地做事 短语接力 （1）Mr. Liu found a full­time job as a laborer. His wife took a part­time job and watched over the family's two children. 刘先生找到了一份全职的体力活儿。他的妻子做了一份兼职， 并照看两个孩子。 （2）_________________  when you cross the road. 过马路时当心车辆。 Watch out for cars  短语巩固 1. （2013襄阳四中模拟）—I think he is taking an active part in social work. —I agree with you ________. A. in the way B. on the way  C. by the way D. in a way D 答句句意：某种程度上我与你观点一致。in the way，“ 挡道”；on the way，“在途中，即将到来”；by the way ，“顺便说，顺便问一下”；in a way，“在某种程度上， 从某一点上看”。根据句意可知D项正确。 短语巩固 2. —You look so worried. What's the matter？ —I don't know______ these boring problems. A. what to deal with B. how to do with C. what can I do with D. how to deal with D 考查短语用法。deal with通常与how搭配，而do with 通常与what搭配。 短语巩固 3. You must always ________ the traffic whenever you are in a crowded city. A. look out B. watch out for  C. look at D. watch over B 考查短语辨析。watch out for是固定搭配，意思是“小 心，注意”。look out，“小心”，后接宾语时需接介词 for；watch over，“看守，监管”。 句型荟萃 1. I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage. 我发育缓慢，差不多到了两百年之后，查尔斯•巴比奇才把我 制成了一台分析机。 【句型分析】 句型“It＋be/takes/...＋时间段＋before...”意为“过一段时间后才 ……”。若主句为将来时态，从句用一般现在时态；若主句是一般过去时 态或过去完成时态，则从句用一般过去时态。 句型荟萃 It took months before we solved the financial problem of our company. 花了好几个月的时间我们才解决了公司的财务问题。 （2013湖南，23）You must learn to consult your feelings and your reason ________ you reach any decision. A. although B. before C. because D. unless B 考查状语从句。句意： 在你做任何决定之前，你得学会顾 及到你的感受和你做此决定的原因。可知答案为B项。 句型荟萃 2.Over time my memory has developed so much that， like an elephant， I never forget anything I have been told！ 随着时间的推移，我的记忆能力发展得如此之快，就像一头大 象一样，我从来不会忘记告诉我的任何事情！ 【句型分析】 such/so...that...引导结果状语从句，意为“如此……以至于 ……”。 句型荟萃 （1）so...that...基本句式： so＋adj./adv.＋that... so＋adj.＋a/an＋单数可数名词＋that... so＋few/little/many/much＋n.＋that... （2）such...that...也可引导结果状语从句： such＋（adj.）＋不可数名词＋that... such＋（adj.）＋复数名词＋that... such＋a/an＋adj.＋单数可数名词＋that... （3）so， such修饰的成分置于句首时，主句常用倒 装语序。 句型荟萃 （4）“so＋adj./adv.＋that...”句型中， 若结果状语从 句是否定形式，可以转换成“too...to...”结构； 若 结果状语从句是肯定形式，可以转换成“...enough to...”结构。 （5）so that也可引导目的状语从句，从句中常有 can/could/may/might等情态动词，此时so that可用 in order that代 替。 句型荟萃 ( 1）Finally， I got so tired of it that I decided something had to change. 最后，我对它非常地厌烦以至于我决定要做出一些改变。 （2）It is so interesting a magazine that I can't wait to read it. ＝ __________________________________ that I can't wait to read it. ＝ ________________________________________ that I can't wait to read it. 它是如此有趣的一本杂志，我迫不及待地想看。 So interesting a magazine is it Such an interesting magazine is it  句型巩固 1. （2013江苏苏中三市调研）___________ that even the people in the next room could hear him. A. So he spoke loudly B. So he did speak loudly C. So loudly did he speak D. So did he speak loudly 解析：C 句意：他说话太大声，连隔壁屋子里的人都听得 见。so放在句首加强语气时，主句要用倒装语序。 句型巩固 2. _________ children get older， they become more and more interested in the things around them. A. While B. When C. As D. With 解析: C as可表示两个同步发展的动作或行为，意为“随着 ”；while表示一段较长的时间或过程内主从句谓语动作同 时发生；when作“当……时候”讲，指较短的一段或点时间； with不能引导从句。 句型巩固 3. Most of the scientists say it may be five or six years _________it is possible to test this medicine on human patients. A. since B. after C. before D. when 解析: C 考查句式表达。“It＋may be＋时间段＋ before...”表示“也许要过多久才……”，故选C。 单元语法专练 【语法概要】本单元主要复习了现在完成时的被动语态。 【典题集训】 1. （2013郑州三模）—Linda， the phone in your office can't be connected all the time. Why？ —Oh， sorry， Miss Miles. The service ________since last Wednesday. A. has been stopped B. has stopped  C. was stopped D. had stopped 2. （2013银川联考）In Japan， all students ________ how to prepare for and react to a disaster since a young age. A. were taught B. taught  C. have taught D. have been taught 单元语法专练 3. （2013唐山调研）—Flight 302 to Paris ______ until 7：30 tomorrow morning. —No wonder I hear so many complaints from the passengers. A. put off B. has been put off  C. will put off D. had been put off 4. （2013皖南八校联考）We've been told the good news， but when and where to go for the exciting vacation _______ yet. A. are not discussed B. have not been discussed C. is not being discussed D. has not been discussed 5. （2013湖南适应性测试）—Why are you still here？ Everybody has gone to attend the lecture by the president. —Oh， I _______ about it！ A. wasn't informed B. hadn't been informed C. haven't informed D. didn't inform 应试技巧 强调在写作中的应用 一、 用形容词或副词very， only， single， such， so， even 等修饰名词或形容词来加强语气，例如： 1. It's even better if you could share more of the housework， such as cleaning， washing and cooking. 2. She felt very sorry about that， but said that you could set some other time for the meeting. 二、 用even， let alone， especially， indeed， greatly， a lot等修饰动词起到突出表意的作用，例如： For most people， it's almost impossible to operate a computer without a mouse， let alone surf the Internet. A simple click can even bring us a flood of music， movies and PC games. Just imagine， all this can be done with a cute mouse. 三、 用感叹句来表示强烈的感情，突出说话人的情感，例如： What an interesting picture （it is）！ 四、 通过适当调整语序达到强调的目的，例如： 1. 把地点状语提前以强调地点： Along this 800­meter street， there are more than 300 shops. 2. 把时间状语提前以强调时间： On May Day， Li Yue and Zhang Hua， students from Class Three， Grade Two， went to Sunshine Nursing Home and did some voluntary work. 五、 通过使用such...that...， so...that...， not...but...等一些固定的搭 配达到强调的目的，例如： 1. They said it was such a beautiful day that they would remember it forever. 【试比较】They said it was a beautiful day and they would remember it forever. 2. He was also so diligent that he worked hard day and night. 【试比较】He was also diligent and he worked hard day and night. 六、 用疑问句代替陈述句达到强调的目的，例如： How can I wait that long？ 【试比较】I can't wait that long. 七、 用“助动词do（does/did）＋动词原形”对谓语动词进行强调， 例如： If you decide to come or need any further information， do let me know. 【试比较】If you decide to come or need any further information， please let me know. 八、 用强调句型“It is（was）＋被强调的部分＋that（who）＋原 句其他部分”来对句子的主语、宾语和状语进行强调、突出说话 人的意愿，例如： It was not until the end of the 19th century that shooting， originated as a means of survival， earned its status as a sport. 【试比较】Shooting， originated as a means of survival， didn't earn its status as a sport until the end of the 19th century. 九、 通过使用排比、重复、渐强等修辞手段对句意进行强调，例如： 1. I like him because his comedies and tragedies bring me into a fantastic world； I love him because his poems let me enjoy the beauty of the English language; I admire him because his keen sights set me thinking and teach me how to lead a meaningful life！ 【赏析】作者通过使用like，love和admire三个动词使语气层层递进， 通过使用三个because引导的排比句充分说明了自己喜欢莎士比 亚的原因。 用适当的强调形式将下面的句子翻译成英语。 1. 一大早我们就动身去山顶捡垃圾。  Early in the morning， we set off to pick up the rubbish on the top of the mountain.  2. 说实话，我确实喜欢你借给我的那本小说。  Frankly speaking， I do like the novel that you lent to me.  3. 正是在您的帮助下我才按时完成如此艰难的一项任务。  It was with the help of you that I could accomplish such a difficult task on time.  4. 在树林的旁边有一条河，过去我经常在里面游泳。  By the side of the woods is a river where I used to swim.  5. 他迟到不是因为他的汽车坏了，而是他早上睡过了头。  The reason why he was late was not that his car broke down but that he slept late in the morning.  结合括号中的提示，用不同的强调手段把下面的短文补充完整。 Nowadays， lots of children in rural areas can't live together with their parents working in other places. On the whole， several factors result in the problem. Firstly， some parents 1. _________（强调谓语动词：的确担心） that it will influence their work 2. ______________________________ _______________（如果他们真的把孩子带在身边）. Secondly， the living costs and education fees in the place where parents work are 3. _____________________________________  （如此地高，他们负担不起）. Lastly， if moving to a new school， the children may not learn do worry    if they really take the children along with them   so high that they can't afford it  well because the textbooks may vary from place to place. I think 4._________________________________________（这个问题绝不应该 被忽视）because it does harm to children in many ways. First of all， 5. ____________________________________________________ __________（没有父母的关爱，孩子们将会感到非常孤单）， I am sure. Worse still， such children get into bad habits easily， which 6. _________________________________________ （将毫无疑问 影响他们的健康成长）. Also， if this problem can't be settled properly， it will affect the country's development. After all， children are the future builders. the problem should never be ignored children will feel quite lonely without parents' love and care  will no doubt influence their healthy growth  In my opinion，7.__________________________________________ ________________________________________（强调句型：父母和政 府应为这个问题负责）. Besides， 8. __________________________ _______________（不管我们面临什么样的困难）， we should take effective measures to overcome the problem. it's the parents and government that are to be responsible for the problem  whatever difficulties we are faced with 备课优选 1. （2012烟台第二次诊断）George was responsible for the accident because he didn't give a _______to other drivers. A. notice B. mark   C. symbol D. signal D 句意：乔治应对这场事故负责，因为他没给其他司机信号。 notice，“公告，布告”；mark，“记号”；symbol，“标 志，象征”；signal，“信号，暗号”。 备课优选 2. （2013重庆高三联考）Suddenly I realized that I had stayed here long and _________ to say goodbye to the host. A. raised B. rose   C. lifted D. stood B 句意：突然我意识到我在这里逗留的时间很长了，于是起 身向主人道别。如果选择D项，其后要加上up。A、C两项是及 物动词，故不正确。 备课优选 3. （2012日照一检）The door and the windows were all closed and there was no ________ of forced entry. A. scene B. signal  C. sign D. sight C 考查名词辨析。句意：门窗都关着，没有强行侵入的迹象。 sign，“迹象”。scene，“场景，景色”；signal，“信号 ”；sight，“视野”，均不符合句意。 备课优选 4. —You look so worried. What's the matter？ —I don't know _______ these boring problems. A. what to deal with B. how to do with  C. what can I do with D. how to deal with D deal with通常与how搭配，而do with通常与what搭配。 C项语序不对。 备课优选 5. The Great Wall is ________tourist attraction that millions of people pour in every year. A. so a well­known B. a so well­known  C. such well­known a D. such a well­known D 句意：长城是如此著名的旅游胜地，以至于每年都有上百 万人涌来。such＋a/an＋形容词＋单数名词＋that从句，表示 “如此……以至于……”。 备课优选 6. （2012济南模拟）How long do you think________the computer company brings out a new product？ A. it will be before B. will it be until    C. will it be when D. it will be that A 句意：你认为这家电脑公司多长时间后会生产出一种新产 品？此题考查“it will be＋时间段＋before句型”的疑问句式。 备课优选 7. （2012蚌埠模拟）Don't try to ________any excuse， Alan. Tell me why you didn't come to school today. A. show up B. make up    C. bring up D. keep up B 句意： Alan，不要试图编造任何借口。告诉我你今天为 什么没来学校。show up，“出现，露面”；make up，“编 造，弥补”；bring up，“抚养，教育，提出”；keep up， “持续不变”。 备课优选 9. Today， he didn't go to work as _________， for it is not a（n）________day. A. common； usual B. usual； ordinary  C. usual； normal D. common； ordinary B 句意：他没有像往常一样去上班，因为今天是个不平常的日 子。as usual，“像平时一样”；an ordinary day，“一个平常 的日子”。 备课优选 10. We‘ve missed the last bus. I’m afraid we have no ______ but to take a taxi. A. way B. choice   C. possibility D. selection B 句意：我们错过了最后一辆公共汽车。恐怕我们只能乘出租车 了。have no choice but to do sth.，“不得不做某事”。