Unit 3 Computers
Period 1
Period 2
Period 3
Period 4
Period 5
Period 6
Period 1
Look at the following pictures and say their English names.
abacus
calculator

huge computer
PC

laptop
PDA
robot
What’s next?
keyboard
mouse
monitor
screen
speaker
host computer
What English words do you know about computers?
Can you number the following pictures according to the time? Please discuss what they have in common.
laptop
robot
PDA
PC
huge computer
calculator
abacus
I think that…
In my opinion…
I believe that…
What’s your reason?
Why do you think so?
1.They can be used for calculating.
2.They can deal with
maths problems.
3.They are our friends.
4.They are useful and helpful.
What do they have in common?
What can computers be used to do?
Pre-reading:
How do you use computers and the Internet?
Yes
No
I often use a computer to…, I sometimes use it to…, and I never use it to…
Computers have great power. They make our lives more colorful and more convenient.
BUT
Don’t just use computers for fun.
Don’t spend too much time in playing computer games or chatting(聊天) online. We should learn more computer skills which are very useful in our future work.
Reading:
Who am I?
tube 电子管
transistor 晶体管
chip 芯片
Fast-reading:
1. Who is the speaker in this story?
A computer.
2. Write down three sentences from the story to support your idea.
1) I was built as an Analytical machine by Charles Babbage.
2) My real father, Alan Turing, …
3) I was always lonely standing there by myself, until in early 1960s they gave me a family connected by a network.
Listen and answer the questions.
1. Where was the speaker born in 1642?
In France.
2. What happened to the speaker after nearly two hundred years?
He was built as an Analytical Machine by Babbage.
3. What was the speaker called in 1936?
A universal machine.
4. What happened to the speaker in the 1970s?
He was used in offices and homes.
The computer began as a calculating machine．
The computer grew rapidly both in size and in brainpower.
Careful-reading:
Read the text carefully and fill in the tables.
Computers had grown as large as a room.
1960s
Computers were used in offices and homes.
Computers connect people all over the world together.
calculating
analytical
universal
mathematical
problems
Medical operations
Memory
Transistors
Applications
Communication
Trade
Over time I have been changed quite a lot.
Calculating machine
Analytical machine
Universal machine
PC
laptop
These changes only became possible as my memory improved
Tubes
Transistors
Chips
Network
World wide web
Since the 1970s many new applications have been found for me.
Communications
Finance
Trade
Robots
Mobile phones
Medical operations
Space rockets
Providing a life of high quality
In 1642 I began as a calculating machine and could solve any mathematical problem.
My real father was Charles Babbage, who wrote a book and build me in 1936.
After I got my new transistors in the 1960s, I became smaller but cleverer and quicker.
I was brought into people’s homes in the 1970s.
Since my birth I have been built to
take the place of human race.
F
F
T
T
F
Read the text again and check if it is true or false.
Discussion
Is it very important to learn computer skills for us? Why or why not?
Use the following expression in your discussion.
I think that ……
In my opinion …
I believe that …
What’s your reason?
Why do you think so?
Homework
Retell the text according to the following clues we given.
Changes of the machine.
Calculating machine
Analytical machine
Universal machine
Machine with artificial intelligence
Machine with new transistor
A family connected by a network
A family used by the Internet
Retell:
Period 2
The history of computers
Revision:
the second generation
(1956-1963)
the third generation
(1964-1971)
the fourth generation
(1971- )
The first generation
(1945-1956)
Learning about language
Discovering useful words
and expressions
1.___________
2.___________
3.___________
4.___________
5.___________
6.___________
7.___________
8.___________
9.___________
10.__________
complete change in ways of thinking ,working , etc.
connected computer system
to make things easier
to find the answer using numbers
can be moved easily from place to place
to work out the answer to a problem
to travel around an area to find out about it
completely
anyway
activity of managing money

finance
anyhow
totally
explore
solve
mobile
calculate
simplify
revolution
network
Find the word or expressions fro each of the following meanings from the text.
Complete the passage with the words below.
My brother was very interested in computers and enjoyed writing programs of his own. He used to download information from the Internet and made good use of it. He liked to ________the World Wide _______ and used the Internet to communicate with computer programmers all over the world. When he went to university, he studied IT( information ____________) and developed a special interest in __________ intelligence. After developing special ___________ of the computer, he hopes to design an __________ robot which can think _________ and look like a human being, but in _______ he has a long way to go.
explore
Web
technology
artificial
applications
intelligent
logically
reality
Word Puzzle
An abacus
It is built to solve some mathematical problems. But it is too big.
A huge computer
An old calculating machine used in China until now.
It is a new calculating machine which can solve a large number of mathematical problems.
A calculator
It is a personal computer which can solve all kinds of problems and is used widely now.
A PC (personal computer)
It is a kind of computer which can be taken conveniently like a notebook.
A notebook computer
1). With the help of computer, you may not find it hard to deal with and share information. (it做形式宾语)
在电脑的帮助下，你会发现处理和分享信息是不难的。
2)This will cost a lot of money, but after all, it is worth buying a computer for every teacher.
为每位老师购置一台电脑要花费很多钱，但毕竟这很值得。
3)If a new situation arises, they will make up new programes.
如果出现新的情况，他们会补充新的程序。
The key sentences:
4) Personally, I think the team who won first place cheated.
就我个人而言，我认为赢得第一名的那支队作弊。
5) It is generally believed that IT has both advantages and disadvantages.
人们普遍认为信息技术既有优点又有缺点。
6) In a way, her English has improved but there is still a long way to go.
从某种程度上看，她的英语有所进步，但对她来说，学好英语道路还很长。
7) In common with my teammates , I enjoy staying home reading novels when I am on holiday.（现在分词做状语）
和我的同伴们一样，放假时，我喜欢呆在家里看小说。
8) However, people thought I was simple-minded until they discovered I had “artificial intelligence”.
可是人们本来以为我头脑简单，直到发现我有人工智能时，他们才不这么想了。
9) Charles Babbage is generally considered
to have invented the first computer.
人们普遍认为第一台电脑是查尔斯巴比奇发明的。

10)The door won’t open anyway.
这门无论如何也打不开。

11) As the years have gone by, computers have been made smaller and smaller.
一年又一年过去了，电脑被制造得越来越小。

12).They had so much work to do that they
have to take turns (in/at) looking after
their sick mother.
他们都很忙以致不得不轮流照顾生病的母亲

13) In my opinion, you should watch over
your child, who often wanders in the streets.
依我看来，你应该看管好你那个孩子，他经常
在街上徘徊。
Period 3
The Passive Voice
Change the Active Voice into the Passive Voice:
Group A
1. We have finished our homework.
2. Many visitors have visited the Great
Wall.
3. Mike has seen two films since last month.
4. The Russian government has turned
these palaces into museums.
Group B
1. Our homework has been finished by us.
2. The Great Wall has been visited by many visitors.
3.Two films have been seen by Mike since last month.
4. These palaces have been turned into museums.
分析:
A组强调动作的执行者,是主动语态,
结构:主谓宾,
相同点:两组都是完成时态,
结构: have/has+过去分词

B组的句子强调动作的承受者, 是被动
语态.
相同点: 两组都是完成时态
结构: 助动词 have/has been +过去分词
Have/ has been V-ed现在完成时的被动语态
1.The new bridge over the Yellow River has just been completed.
2.Many more buildings have been built in the past ten years.
表示到现在为止已经完成的某个被动的动作
1.被动语态介词固定搭配不能省略。
He has thought of a way of solving the problem.
E.g. The accident which happened yesterday surprised me.
=A way of solving the problem has been thought of.
2.break out/ happen/ take place/ arrive/ become/ die/ disappear etc 不及物动词没有被动语态
3.带双宾语的动词give /send/bring/ take/teach/show/ tell/ make/ sing/ write/ sell/buy/ ask/ pay/ borrow/ lend/ hand/ offer/provide/ past/get/promise 变被动语态有两种方法：
（2）= The book has been given to him.
E.g. I have given him the book
（2） = He has been given the book.
(2) =We have been offered the most comfortable service by him.
He has offered us the most comfortable service.
(1) =The most comfortable service has been
offered to us by him.
Change the following sentences into the present perfect passive voice. Put the verbs into the correct form.
We have bought a new personal computer.

2.We have found many problems with our new computer.
A new personal computer has been bought by us.
Many problems have been found with our new computer by us.
3. They have built a PC the way we wanted.

4. They have just joined our computer to the Internet.

5. We have used the computer every day since we bought it.

6. We have written a lot of e-mails on the computer in the past year.
A PC has been built the way we wanted by them.
Our computer has been joined to the Internet by them.
The computer has been used every day since we bought it.
A lot of e-mails have been written on the computer in the past year.

主动语态表示被动的若干情形：
1. 谓语动词用主动表被动的四种情形
（1）某些连系动词主动表被动：look, sound, smell, taste, prove, feel
This kind of cloth feels soft. That dog looks dangerous. My advice proved to be wrong.
(2) 当open, close, shut, lock, move等用做不及物动词且表示主语的某种属性时，通常用主动形式表示被动意义。他们通常与c