Unit 3
Computers

Reading
高一人教新课标版必修二
Pre-reading
mouse
keyboard
monitor
What do you know about computer?
Can you name some parts of computer?
The history of the computer
Palmtop
Our life has changed!
In the past, if we wanted to do reading, we had to carry a lot of heavy book. But now we needn’t do it, we only need to surf the Internet. Our life has changed easy!
( ) Analytical machine(分析机)
( ) Laptop
( ) Calculating machine(计算机器)
( ) Robot／android
( ) PC
( ) Universal machine(通用机器)
Can you put these inventions in an order
according to the time when they appeared?
?
Who am I ?
Reading
Skimming: Go over the story to find out who the speaker is. Write down 3 sentences to support your idea.
● I was able to share my knowledge with  others through the World Wide Web.
●“My real father was Alan Turing ...”
●I was built as an Analytical Machine
by Charles Babbage.”
Fast reading
1. Who am I ?

2. Who built the first analytical machine?
3. Who was the next important person
to design computers?
Charles Babbage built the first
analytical machine.
Alan Turing was the next important
person to design computers.
I am a computer.
What’s the main idea of this passage?
A. The development of computers
B. The development and use of computers
C. A machine which is simple-minded
D. Computers may replace human being
Fast-reading
B
In 1642 I began as a calculating
machine and could solve any
mathematical problem.
2. My real father was Charles Babbage,
who wrote a book and build me in
1936.
F
F
Alan Turing
True or False?
3. After I got my new transistors in
the 1960s, I became smaller but
cleverer and quicker.
4. I was brought into people’s homes
in the 1970s.
5. Since my birth I have been built to
take the place of human race.
T
T
F
serve
6. Alan Turing built an Analytical Machine to solve any mathematical problems.
7. People began to realize that the computer got cleverer and quicker with time passing.
8. The computer began to serve the human race since it was brought into people’s homes.
F
T
F
9. Since the 1970s, the computer was used by people around the world through the Internet.
10. The larger the computer is, the more memory it has.
T
F
Calculating
machine
Analytical
machine
Universal
machine
Artificial intelligence
network
Internet
How did computers develop?
(In 1642)
(In 1822)
(in 1936)
(In the 1960s)
(In the 1970s)
The computer began as a calculating machine．
The computer grew rapidly
both in size and in brainpower.
Read and finish the timeline below.
Careful- reading
The computers had grown as
large as a room.
1960s
Computers were used in
offices and homes.
Computers connect people all over the world together.
Read and Complete the chart.
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
calculating
analytical
universal
mathematical
problems
Medical operations
Memory
Transistors
Applications
Communication
Trade
1. “I” in the passage refers to _____.
A. A TV set B. A computer
C. A radio D. The internet
2. When was the computer the biggest?
A. In 1642 B. In 1936
C. In the 1940s D. In the 1970s
Choose the best answer.
B
C
3. How old is the computer?
A. About 370 years old
B About 270 years old.
C. About 170 years old.
D. About 470 years old.
A
4. What can you infer from the text?
A. The computer has artificial
intelligence.
B. The computer changes greatly
over the years.
C. The computer was not connected by
a network until in the early 1960s.
D. Now the computer can only be
used to deal with information.
B
5. Who was the first person to make the earliest computer?
A. Alan Turing. B. Charles Babbage.
C. Charles Turing. D. Charles Alan.
6. When was the universal machine built?
A. In 1822. B. In 1642.
C. In 1936 . D. In 1940.
B
C
7. What happened to the computer in the
1960s?
It was put into robots and used to make
mobile phone.
B. It was given a family connected by a
network.
C. It began to be put into space rockets
D. It began to be used in the offices.
B
1. How did the computer work as
an Analytical Machine?
The computer followed instructions
from cards with holes.
Answer the questions
2. Why did people think the computer
was simple-minded?

Because the computer was made as a
calculating machine and was used to
solve mathematical problems.
3. In how many ways do we say the computer
changed? What are they?
Size:
Intelligence:
Speed:
Function:

People’s opinion:
smaller
quicker
cleverer
calculating---dealing with…, communicating with…
clever & useful
Summary
I, the c_________, was a calculating machine
in 1642 in F_______. In 1936, I became a
“u________ machine” to s_____ any
mathematical problem. Since the 1970s I have
been used first as a P___ and then as a l______
in office and h______.
omputer
rance
niversal
olve
C
aptop
omes
Many changes have happened to my s____,
so my s______ totally changed.
I have been widely used in many fields,
I have also been put into robots to e_______
the Moon and Mars.
ize
hape
xplore
Discussion
Should high school students
surf the internet(上网)?
I think high school students should
surf the internet because…(first,
secondly, thirdly)
I think high school students should
not surf the internet because…(first,
secondly, thirdly…)
Advantages
We can communicate with friends
Listen to the music
See films & watch news
Play games
Do shopping
Save a lot of time
Do a lot of useful things
Disadvantages
Some people especially the teenagers abandon
(沉迷于) themselves to the computer games
and chatting on the Internet. As a result, they
have little time to study .

Some people use the computer wrongly.

If you spend too much time on it, it will do
harm to our health.
Conclusion
There is no doubt that computer has
two sides, too. If we make good use
of it, it will make our lives more colorful
and convenient. But don’t lose yourself
in playing computers. Just remember:
Keep fit, study well and work hard.
2. What is W.W.W?
World wide web.
3. 科学技术
Science and technology.
4. 人工智能
Artificial intelligence.
5.笔记本电脑
Notebook computer.
1. What is IT?
Information Technology.
考 考 你
palmtop
smaller desktop
convenient laptop
What are today's smaller computers like?
Suppose you are a reporter. Now you are interviewing Mr. / Miss Computer.
Sample questions:
What do you like to eat?
What are your hobbies?
What is your newest
function(功能)?
Can you say something
about your future plan? etc.
… …
Role-play
穿孔卡
通用机器
内存
网络
万维网
card with holes
universal machine
memory
network
World Wide Web
New words and expressions
Calculating machine 计算机器
Analytical Machine 分析机
Artificial intelligence 人工智能
Technological revolution 技术革命
Mathematical problem 数学问题
Transistor 晶体管
1 A monitor is

2 The screen is

3 A keyboard is

4 A mouse is

5 A CD-ROM is

6 A hard disk is
Match the words with their meanings.
the part of a computer
that stores information.
(b)the part of the computer
that you type on.
(c)the part of the computer
that looks like a television
(d)something you use to
click on things (files, etc.).
(e)the part of the monitor
that you look at.
(f)a separate disk that
contains lots of
information.
1. calculate v.
1) 计算; 核算
We haven’t really calculated the cost of
the vacation yet.
我们还没有确切地计算出度假要花多少钱。
2) 推测; 估计
It is important to calculate what influence
he had on her life.
现在无法估计他对她的生活产生多大影响。
Language Points
calculating adj.
斤斤计较个人得失的; 自私的
calculation n. 计算 calculator n. 计算器
calculate on: depend on 指望
We are calculating on having fine
weather for the sports meeting.
我们指望着运动会有好天气。
be calculated to 被计划成, 打算
eg.The ad. is calculated to attract children.
2. analytical adj. 分析的, 解析的
analyse vt. 分析; 研究
analogy n. 相似; 类似
analysis n. 分析; 研究
analyst n. 分析家
analytic adj. 分析的; 分解的
3. universal adj. 通用的, 普遍的, 世界性的
English serves as the universal language
in the world .
It’s the universal usage of this kind of
machine.
4. Over time I have been changed  quite a lot.
1) over time 随着时间的推移
eg. Can we talk about this over dinner ?
She gradually got better over the summer.
____ the next few days,they got to know the
town well.
A. With B. Over C. For D. At
2) have been changed
现在完成时的被动语态
B
5. Although I was young, I can
_________ difficult sums.
simplify
vt. 简化
adj. simple 简单的, 朴素的
simple-minded
sum n. 总数, 算术题, 金额
in sum
a large sum of
总之
大量, 许多(不可数名词)
总之, 这个计划失败了

他给了我很多食物。
In sum, the plan failed.

He gave me a large sum of food.
头脑简单的
6. before conj. 在不同的语境中有不同的含义:
(1)多久之后才 (2)在...以前 (3)以免, 不然
(4)还没...就...(常和can 和could连用)
eg.(1)It was a long time before I went to sleep
last night.
(2)I would like to talk to you before you go.
(3)Do it before you forget.
(4)She hung up the phone before I could
answer it.
比较: not….until 直到……才……
I didn’t complete the work until one year later.
7. artificial adj. 人工的, 人造的
artificial flowers/limbs/pearls
假花/假肢/假珍珠
artificial intelligence 人工智能
8. intelligence n．智力; 聪明
intelligent adj. 有智力的; 聪明的;理解力强的
①He is a person of great intelligence.
他是个极聪明的人。
②A dolphin is an intelligent animal.
海豚是有智力的动物。
9. As time went by…=With time going by
1) as conj. 随着……, 引导时间状语从句。
As time went on, Einstein's theory proved
to be correct. 随着时间的推移,爱因斯坦的
理论证明是正确的。
表示“随着……”时, 也可