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 couldn't 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 can't 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:
1．As time went by, I was made smaller.
2．My memory became so large that even I couldn’t believe it!
3．I 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
Reading　　
WHO 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 couldn't 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:
Ⅰ. Look up the words in the dictionary and then match them with the pictures.

A. host computer B. screen C. keyboard
D.mouse E.monitor D. speaker
Ⅱ. Guessing game: Do you know who I am?
1.I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they don’t like me now. 
2.I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems.
3.I can be used for calculating. Besides, I can also be used for watching DVD, sending e-mail and communicating through the Internet. However, I am not a PC, becauseI’m small enough for you to take me with you.
4. I can be used as a laptop. However, I am not a laptop, becauseI’m small enough for you to hold me in your hand.
III. Skimming
1. Who is the speaker in this story?

2. What’s 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
Ⅰ.Choose the best answer according to the passage.
1. Who was the first person to make the earliest computer?
A. Alan Turing B. Charles Babbage
C. Charles Turing D.Alan Babbage
2. 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 material
B.it was too large in the past
C.its memory has improved a lot
D.there is less room on the beath
4.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
Ⅱ.Fill in the form according to the passage.
1642
The computer began as a 1. machine.
About 200 years later
The 2. machine was built by Charles Babbage and it was the start of 3. “ intelligence”
1936
Alan Turing wrote a book to describe how computers could be made to work as a 4. “ Machine”
1940s～1970s
Because information can be stored in tubes, then on 5. and later on very small 6. , computers became smaller.
1960s
The first family of computers was 7. to each other by a 8.
1970s
Computers were used in offices and 9. .
now
Computers 10. people all over the world together.

三级阅读目标
I .Summary
Fill in the blanks with proper words according to the passage.
I began as a ___________ machine in 1642 in France. About 200 years later I was built as an _________ machine. Then in 1936 Alan Turing wrote a book and built a “ _________ machine”.
As time _____ _____, I was 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. I have been used in _________ and homes since the 1970s. So I became a PC. I’m happy to become a _________friend and helper of the _________ _________.
Ⅱ. 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.You’d 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 phrases
1.in common ___________ 2.go by ___________
3.as a result ___________ 4.from…on ___________
5.so…that…___________ 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
have…in common; from then on; as a result; in total; so…that…;
in the early 1960s; share…with…; go by

1.There were about 40 people _____.
2.As time _________, his mother’s hair turned grey.
3.He was ill. _________, he didn’t go to school.
4.She was _____excited _____she couldn’t 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. In 1936my 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.

2. By the 1940s I had grown as large as a room, and I wondered if I would 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）if I would grow any larger 是_____ 从句，在句中作_____ 的宾语。
3. Over time my memory has developed so much that, like an elephant, I never forget anything I have been told.

分析：（1）句中so…that…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of＋n.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 study
1. 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
①common 是形容词，意为
②have 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
① I suddenly felt we （有许多相似之处）
② They have （共同的兴趣） in music.
③ （和…一样） most young persons, he loves pop music.
④ 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
① vt. 解决；解答
② 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
① The maths problem is very easy to .
② There is no simple to this problem.
③ 这个问题必须在中午之前解决。
The problem must before noon.
④ 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
① Several years went by before they met again.
② Don’t let this chance go by.
③ 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
① The car raised a cloud of dust as it .
② We’d better not our parents’ wish.
③ She must have a lot of difficulties.
④ He the article again.
⑤ The alarm when the thieves went into the office.
A. went off B. went along C. went by D. went away
4.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 of

5. total
观察领悟
I’m 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
①total adj. n.
②in total （=totally）
ƒa total of （修饰名词复数时，谓语动词用复数）
活学活用
① twenty people took part in the game.
= Twenty people took part in the game .
②There 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 all
6. anyhow
观察领悟
Anyhow, my goal is to provide humans with a life of high quality.
I couldn’t think of the name of that man anyhow.
易混辨析
anyhow=anyway
adv.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=someway
adv.以某种方式，用某种方法；不知怎么地。多用于句中或句末
somewhat
adv.有点，稍微。后接形容词或副词，相当于slightly
选词填空（anyhow/somehow/somewhat）
① he was afraid of her.
②I’ve tried, but I can’t open it .
ƒMy jacket is like yours.
④Linda advised him not to buy the iPhone, but he bought it .
A. Anyhow B. however C. then D. totally
7. 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。
①Before I enter on the subject I have something to say.
②I had not gone a mile before I felt tired.
ƒBefore 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 wasn’t / won’t 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
①三个月后他才恢复健康。（汉译英）

②The 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. since
8. 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： ，Einstein’s 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
①As 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.