人教版-英语-必修二第三单元教学案2.doc

Unit 3 Computers单元学习目标: 单元背诵: 1.And my memory became so large that even I couldnt believe it！2.Anyhow, my goal is to provide humans with a life of high quality.3.Today an increasing number of people have realized that law education is of great importance.4. The two cultures have a lot in common.5.As time went by,I gradually adapted myself to the school life .6.With winter coming ,it is getting colder and colder.7. As a result,I have made steady progress in my study. 8. So precious is the time that we cant waste it.9.I would appreciate it if you can give me some good advice.10.what has impressed us most is her devotion to work.单元重难点: 重点句型: 1As time went by, I was made smaller.2My memory became so large that even I couldnt believe it!3I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage.重点语法：现在完成时的被动语态 Period one ReadingWHO AM I? Over time I have been changed quite a lot. I began as a calculating machine in France in 1642. Although I was young I could simplify difficult sums. I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage. After I was programmed by an operator who used cards with holes, I could think logically and produce an answer quicker than any person. At that time it was considered a technological revolution and the start of my artificial intelligence. In 1936 my real father, Alan Turing, wrote a book about how I could be made to work as a universal machine to solve any difficult mathematical problem. From then on, I grew rapidly both in size and in brainpower. By the 1940s I had grown as large as a room, and I wondered if I would grow any larger. However, this reality also worried my designers. As time went by, I was made smaller. First as a PC (personal computer) and then as a laptop, I have been used in offices and homes since the 1970s.These changes only became possible as my memory improved. First it was stored in tubes, then on transistors and later on very small chips. As a result I totally changed my shape. As I have grown older I have also grown smaller. Over time my memory has developed so much that, like an elephant, I never forget anything I have been told! And my memory became so large that even I couldnt believe it! But I was always so lonely standing there by myself, until in the early 1960s they gave me a family connected by a network. I was able to share my knowledge with others through the World Wide Web. Since the 1970s many new applications have been found for me. I have become very important in communication, finance and trade. I have also been put into robots and used to make mobile phones as well as help with medical operations. I have even been put into space rockets and sent to explore the Moon and Mars. Anyhow, my goal is to provide humans with a life of high quality. I am now truly filled with happiness that I am a devoted friend and helper of the human race!一级阅读目标:. Look up the words in the dictionary and then match them with the pictures.A. host computer B. screen C. keyboardD.mouse E.monitor D. speaker. Guessing game: Do you know who I am?1.Iamveryoldnow.Iwas born in China. Many people used me for calculating in the past, but nowIama bit lonely because they dont like menow. 2.Iamverysmall.Ican be used for calculating. In China, a lot of students use me when solving mathematical problems. 3.Ican be used for calculating. Besides,Ican also be used for watching DVD, sending e-mail and communicating through the Internet. However,Iamnot a PC, becauseIm small enough for you to take me with you. 4. Ican be used as a laptop. However, I am not a laptop, becauseIm small enough for you to hold me in your hand. III. Skimming1. Who is the speaker in this story? 2. Whats the main idea of the text?A. The computer wants to find “who he is”.B. The function of the computer.C. The computer becomes popular around the world.D. The changes and the applications of the computer.二级阅读目标: Detail-reading.Choose the best answer according to the passage.1. Who was the first person to make the earliest computer?A. Alan Turing B. Charles BabbageC. Charles Turing D.Alan Babbage2. When was the computer biggest?A. In 1642. B. In 1936. C. In the 1940s. D. In the 1970s.3. According to the text, the computer has grown smaller mainly because .A. it use good materialB.it was too large in the pastC.its memory has improved a lotD.there is less room on the beath4.which of the following is in the right order of time?a.The computer was connected with other computers.b.Alan Turing wrote a book about the computer.c. The computer has been sent to explore the Moon and Mars.d.The computer began to simplify difficult sums. A. abcd. B, bcad. C, dacb. D.dbac.Fill in the form according to the passage.1642The computer began as a 1. machine.About 200 years laterThe 2. machine was built by Charles Babbage and it was the start of 3. “ intelligence”1936Alan Turing wrote a book to describe how computers could be made to work as a 4. “ Machine”1940s1970sBecause information can be stored in tubes, then on 5. and later on very small 6. , computers became smaller.1960sThe first family of computers was 7. to each other by a 8. 1970sComputers were used in offices and 9. .nowComputers 10. people all over the world together.三级阅读目标 I .SummaryFill in the blanks with proper words according to the passage. Ibegan as a _ machine in 1642 in France. About 200 years laterI was built as an _ machine. Then in 1936 Alan Turing wrote a book and built a “ _ machine”. As time _ _,Iwas made smaller. These changes became possible because my memory improved. In the 1960s they gave me a family connected by a _ . Now people call it the World Wide Web.Ihave been used in _ and homes since the 1970s.So I became a PC. Im happy to become a _friend and helper of the _ _. Discuss in groups the advantages and dis advantages of the computer. Period two vocabulary课前自测预习（homework）I.Please translate the following sentences into Chinese and pay attention to the words in black.1.With the development of technology， our life is more convenient and happier than before.2.English is referred to as a universal language.3.The industrial revolution took place in England first.4. Though Einstein is ordinary-looking, he is highly intelligent.5.It may snow, but anyhow I will go to the town.6.Personally, I think he is a very good man, but you may not agree.7.Youd better set a goal before you begin to learn English.8.The sum of 5 and 3 is 8.9.The experts are exploring every part of the island and want to find something unusual.10.I was fitted an artificial tooth by the dentist.II. Finish the following phrases1.in common _ 2.go by _3.as a result _ 4.fromon _5.sothat_ 6. _与分享7. _和一样；和；也 8. _提供某人某物9. _充满 10._总计III.word formation (try to finish the following words )1. _ vt.计算 calculator n. 计算器2.universe n. 宇宙 _ adj.普遍的；通用的；宇宙的universally adv.普遍地3.simple adj. 简单的_ vt.简化4. _ adj.合逻辑的；合情理的 logically adv.逻辑上；合逻辑地；有条理地5. _ n. 工艺；科技；技术 _ adj.科技的6. _ n. 智力；聪明；智能_adj.智能的；聪明的7. _ n. 真实；事实；现实 real adj.真实的，真的8. _ adj. 私人的；个人的；亲自的_ adv.就个人而言；亲自9. _adj. 总的；整个的_ n. 总数；合计_ adv.完全地；整个地10. solve vt.解决；解答 _n解答IV 选词填空havein common; from then on; as a result; in total; sothat; in the early 1960s; sharewith; go by1.There were about 40 people _.2.As time _, his mothers hair turned grey.3.He was ill. _, he didnt go to school.4.She was _excited _she couldnt go to sleep.5.Great changes took place in China _.6. _, he refused to talk about it.7.I _ nothing _with jane.8.Children should be taught to _ their toys _other children.V长难句分析1. In1936myrealfather,AlanTuring, wrote a book about how I could be made to work as a “universal machine” to solve any difficult mathematical problem.2. Bythe1940sIhadgrownas large as a room, andIwondered ifIwould grow any larger.分析：（1）本句是由_连接的并列句，前半句是简单句，后半句是复合句。（2）ifIwould grow any larger 是_ 从句，在句中作_ 的宾语。 3. Over timemymemory has developed so much that, like an elephant, I never forget anything I have been told.分析：（1）句中sothat意为 _，引导结果状语从句。（2）句中I have been told是定语从句，修饰先行词_。4. But I was always so lonely standing there by myself, until in the early 1960s they gave me a family connected by a network.分析：（1）句中_为动词ing形式作伴随状语。（2）connected by a network为过去分词短语作后置定语，相当于定语从句_。5. Anyhow, my goal is to provide humans with a life of high quality.分析：（1）句中anyhow是副词，意为_。（2） of high quality在句中做_，属于ofn.结构。这一结构相当于_，在句中可以做表语、定语或宾语补足语。句意：_Language study1. common观察领悟In pairs discuss what they have in common.We have a lot in common with each other.We share a common aim.This illness is common among the children.自我归纳common 是形容词，意为 have a lot in common with sb. 拓展延伸have nothing / little / something / much / a lot in common没有相似之处/ 几乎没有相似之处 /有些相似之处/ 有很多相似之处活学活用 I suddenly felt we （有许多相似之处） They have （共同的兴趣） in music. （和一样） most young persons, he loves pop music. Mary （和几乎没有相似之处） her sister in character.2.solve观察领悟With the help of his friend, he finally solved the problem.It may take a long time to find a solution to the problem.自我归纳 vt. 解决；解答 n. 解决办法（多与介词 to 搭配）易混辨析solve“解决”，其宾语多为problem,puzzle等，强调解决问题的办法settle“解决”，其宾语多为 question, argument, quarrel等，强调争议、争端，使意见一致活学活用用solve的适当形式填空 The maths problem is very easy to . There is no simple to this problem. 这个问题必须在中午之前解决。The problem must before noon. I found that I have much difficulty in the argument between the two families.A. receiving B. settling C. upsetting D. solving 3. go by词义匹配根据句意选出go by 在句中的正确含义a.走过（某地） b.（时间）过去，流逝 c.（机会等）失去，被轻易放过 Several years went by before they met again. Dont let this chance go by. A car went by at full speed.拓展延伸go against 违背； 对不利go over 复习； 仔细审查go ahead 进行；（尤指经某人允许）开始做go through 通过；经历；经受；查看go out 出去；熄灭go off 响起；进行活学活用用go的适当短语填空 The car raised a cloud of dust as it . Wed better not our parents wish. She must have a lot of difficulties. He the article again. The alarm when the thieves went into the office.A. went off B. went along C. went by D. went away4.as a result= as a consequence观察领悟As a result I totally changed my shape.He failed his exam as a result of his carelessness.Acting before thinking always results in failure.Success results from hard work.自我归纳as a result as a result of result in （=bring about/ cause /lead to）result from 巧学助记 “因与果”因as a result of 果as a result活学活用He runs every day. , he has lost weight.She was late snow.用适当的介词填空The fire resulted damage to the whole house.His illness resulted bad food. the earthquake, a lot of people in Sichuan lost their homes, becoming homeless.A. As a result B. Result from C. Because D. As a result of5. total观察领悟Im afraid that the performance was not a total success.There were probably about 40 people there in total.Their expenses reached a total of 1,000 pounds.自我归纳total adj. n. in total （=totally）a total of （修饰名词复数时，谓语动词用复数）活学活用 twenty people took part in the game. = Twenty people took part in the game .There are ten teams in the stadium to take part in the match.A. in a word B. in a way C. in total D. at all6. anyhow观察领悟Anyhow, my goal is to provide humans with a life of high quality.I couldnt think of the name of that man anyhow. 易混辨析anyhow=anywayadv.不管怎样，无论如何；反正。常用于转换话题、结束谈话或回到原话题。可用于句首或句末somehow=somewayadv.以某种方式，用某种方法；不知怎么地。多用于句中或句末somewhatadv.有点，稍微。后接形容词或副词，相当于slightly选词填空（anyhow/somehow/somewhat） he was afraid of her.Ive tried, but I cant open it .My jacket is like yours.Linda advised him not to buy the iPhone, but he bought it .A. Anyhow B. however C. then D. totally7. I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage.句型剖析句中before 是连词，意为“ ”。此外before 作连词，还可译为“在之前；就；没来得及就”等。写出 before 在下列各句中的含义。 Before I enter on the subject I have something to say. I had not gone a mile before I felt tired. Before I could say a single word, he ran away. 拓展延伸It was / will be + 时间段 + before 多久之后才 It wasnt / wont be +时间段+ before 没过/ 过不了多久就 【助记】before用在it开头的肯定句型中，常译为“才”；用在否定句中,常译为“没就”活学活用三个月后他才恢复健康。（汉译英） The girl had hardly run the bell the door was opened suddenly, and her friend rushed out to greet her.A. before B. until C. as D. since8. As time went by, I was made smaller.句型剖析 本句中as作连词，意为“随着”，后面接从句，表示事物的发展变化状况。例如： ，Einsteins theory proved to be correct. 拓展延伸连词as引导的从句也可转换为介词with的复合结构。例如：As the day went on, the weather got worse and worse.= With the day going on, the weather got worse and worse. 活学活用As children get older, they become more and more interested in everything.（句型转换）= With children , they become more and more interested in everything.