Unit 3 Computers
Guessing game
Guess!
A toy?
A handbag?
Computers
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.
Do you know who I am?
abacus
Guess more:
I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems.
Do you know who I am?
calculator
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, because I’m small enough for you to take me with you.
notebook computer/
laptop
Do you know who I am?
What do they have in common?
An abacus
A calculator
A desktop
A notebook computer
(What do they have in common?)
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.
Discussion
the history of the computer
Palmtop (掌上电脑)
calculator
abacus
laptop
work for us in Mars(火星)
What’s next?
carry things
work in wars (战斗)
仿真机器人
entertainment
娱乐
What do you think will be the next development?
How much do you know
about a computer???
Give the English name of the
following pictures of the
computer components (组件)
What is it in English??
Main board(主板)
What is it in English??
CPU (central processing Unit)
中央处理器
What is it in English??
hard disc
What is it in English??
Keyboard (键盘)
What is it in English??
monitor
screen
What is it in English??
mouse
鼠标
DVD ROM
keyboard
mouse
monitor
screen
speaker
host computer
CD / DVD-ROM
CRT monitor
LCD monitor
CPU
hard disc
chips
/motherboard
keyboard
mouse
modem
scanner
printer
speaker
floppy disc
USB flash disc
CD/DVD/VCD
MP3 player
Write out all the words you know about  computers.
computer
monitor
click
software
search
update
download
Internet
keyboard
other useful words and expressions about computer
Network 网络
Website　站点
Program　程序
Virus　病毒
Hacker 黑客
Download 下载
Software 软件
Hardware 硬件
Up load 上传
Home page 主页
Password　密码
Desk top 桌面
User name 用户名
Click 点击
TIPS
Some words on the Internet:
What are the advantages and
disadvantages of the
computers?
In my opinion,I can
use the computer
to….
Discussion
We can use the computer to…….
listen to music
Watch movies
search for …
communicate with…
do shopping
Advantages
We can use the compuers to…
1. use a computer for school work
2. play games on the computer
3. send emails to friends
4. download music and films
5. go shopping on line
6. use QQ to make friends
7. communicate with others
8. use the Internet to search for information
9. surf the web for fun
10. read news both at home and abroad, read books and magazines
Disadvantages
Some students may get too addicted (沉溺于)to it .
Some students waste too much time in playing computer games.
Some students spend too much time in chatting with others and may be cheated (欺骗)by someone on line.
As a result, they have little time to study
It is bad for our eyes and health to spend long time in front of computers.
Unit 3 Computers
the history of the computer
PDA (掌上电脑)
calculator
abacus
laptop
Step1 Revise and lead in
Period 2
Reading: Who am I?
Learning aims
To learn some useful words and expressions

To learn the development of computers and Internet.

To develop our skimming and scanning reading skills.
Step2 Words and Phrases
solve
from … on…
reality
as a result
total
totally
so … that
explore
anyhow
goal
human race

如此…. 以致于
v. 探索；探测；探究
adv. 无论如何，即便如此
n. 目标
人类
v. 解决；解答
从….时起
n. 真实；事实；现实
结果
adj. 总的；整个的 n. 总数
Adv. 总的；整个的 n. 总数
Useful phrases
1.calculating machine
2.simplify difficult sums
3.analytical machine
4.card with hole
5.was programmed by an operator
6.technological revolution
7.universal machine
8.artificial intelligence
9.go by
10.new applications
11.a devoted friend
计算机器
分析机
穿孔卡
技术革命
万能机,通用机器
人工智能
（时间）流逝；走过，过去;
简化难的算术题
被一个操作员设计程序
新的应用
一个忠实的朋友
Calculating machine
Computer
Internet
Analytical machine
Artificial intelligence
Universal machine
The development of computers and Internet:
Guessing and predicting
The development of computers:
Calculating machine
Analytical machine
Artificial intelligence
Universal machine
Computer
Internet
Step3 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.”
●First as a PC and then as a laptop.
Skim and answer these questions.
1. Who was the first person to invent the earliest computer?



2 Who was the next important person to design computers?
Charles Babbage
Alan Turing
Skim the passage again and find the topic sentence(中心句）in each paragraph. (一般在句首，有时句中或句末）
Over time I have been changed quite a lot
These changes only became possible as my memory improved
Since the 1970s many new applications have been found for me
Step4 Scanning (Para1, 2)
1. Where were you in 1642?

2. What happened to you after nearly
two hundred years?
I was built as an Analytical Machine
by Babbage.
3. What were you called in 1936?
A universal machine.
4. What makes you totally change the size last?
In France.
Small chips.
Step4 Scanning ( para.3 )
5. What happened to you in the 1970s?
I have been used in offices and homes
and new applications.

6.What new applications have been found
for you?
In communication, finance, trade, robots, mobile phones, operations, space, etc.
calculating
analytical
cards with holes
universal machine
memory
laptop
the early
1960s
share
network
applications, homes and offices
Homework:
1.Revise and remember the words about computers.
2. Read the passage again and do exercise 1 and 2 on the Page19 of the text book.
Timeline
The computer began as a calculating machine
The computer grew rapidly both in size and in brainpower.
The computer had grown as large as a room.
1960s
Computers were used in offices and homes
and new applications.
Computers connect people all over the world together.
1642:_______________________________________________
1822:The Analytical Machine was made by Charles Babbage.
1936:_____________________________________________
_________________________________________
1940s:_________________________________________
_____: The first family of computers was connected to
each other.
1970s:_________________________________________
___________________________________
Now:__________________________________________
__________________________________________
Scanning
Thanks for your listening！
Step5 Summary about the text.
Do the exercise 2 on page 27 of the Best design.
Summary about the text.
The computer __________ a calculating machine in 1642, then in 1822, it was built as an ______________ by ________________. At the year of 1936, Alan Turing ____________ to describe how computers _____________to work and build as a “universal machine” to solve _________________. With the development of information technology
began as
Analytical Machine
Charles Babbage
wrote a book
could be made
mathematical problem
in the 1960s, computers had new
__________and became_______________,
then were connected to each other by
_________. As the years had __________,
computers were___________,people’s
homes. Now computers have become
the most important _________to
_____________all over the world together.
transistors
smaller and smaller
a network
gone by
brought into
tools
connect people
Read the passage and choose the best answers.
1.What can we learn from the text?
A Computer has a short history.
B No one knows computer when the first computer was made.
C Computers are not widely used even today.
D Computers are widely used.
2. Who was the computer’s real father?
A Alan Turning B Not mentioned in the text.
C Bill Gates D Charles Babbage
3 .The computer almost changed completely _.
A in 1642 B in 1882
C in the 1960s D in the 1970s
.
D
A
C
4. When were the computers connected firstly?
A In the 1970s B In the early 1960s
C In 1936 D In 1822
5. Which of the following statements
is not right?
A Computer has a long history.
B Computer has changed greatly since
it was first made.
C Computers are widely used now.
D Computer was brought into people’s
home in the 1960s.
B
D
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
＊ communications ＊finance
＊ trade ＊ robots
＊ mobile phones
＊ medical operations
＊ space rockets
＊ providing a life of high quality
Since the 1970s many new applications have been found for me.
True or False
Alan Turing built an Analytical Machine to solve any mathematical problems.
People began to realize that the computer got cleverer and quicker with time passing.
The computer began to serve the human race since it was brought into people’s homes.
Since the 1970s, the computer was used by people around the world through the Internet.
5. The larger the computer is, the more memory
it has.
F
T
F
T
F
Intensive reading:
Underline the phrases &sentences that you think are important
Summary: what have we learned?
1.some words about computers.
2 the development of computers
3 some scientists relating to computers.
Homework
Recite Para one
有一些共同之处　have something in common
头脑简单的　Simple-minded
心不在焉的　absent-minded
意志坚强的 strong-minded
In a way：to a certain extent 在某种程度上
In the way: 造成阻碍
Aft