Unit 3 Computers
keyboard 键盘
mouse 鼠标
monitor 显示器
screen 屏幕
speaker 音响
host
主机
components of a computer
Reading:
Who am I?
Skimming:
Read and answer these questions:
2. Who was the first person to invent the earliest computer?

3. Who was the next important person to design computers?
Charles Babbage
Alan Turing
1. Who am I?
A computer.
Alan Turing
Charles Babbage
1800s analytical machine
1836 universal machine
calculator
laptop
simplify
operator
logical
technology
revolution
mathematical
personal
tube
transistor
chip
application
finance
mobile
rocket
explore
review
Analytical machine
Universal machine
card with holes
memory
Artificial intelligence
Technological revolution
World Wide Web
分析机
通用机
穿孔卡
存储容量
人工智能
科技革命
万维网(全球信息网)
New Words and Expressions
1.the topic sentence of each paragraph.
Paragraph I:

paragraph II:

paragraph III:

So the whole passage is mainly about:
_________________________________.
I. Fast reading
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.
the development of computers.
The computer _____ ___ ___ _______ machine．
about1822
Alan Turing ____ __ ___ ____ how computers could be made to work as universal machine
Computers had _____ ___ ______ __ a room.
1960s
First as _ ____and then ____________ computers were used in offices and homes.
Computers connect people all over the world
together.
A family of computers was connected by a network.
The _________ machine was made by Charles Babbage.
began as a calculating
analytical
wrote a book about
grown as large as
a PC as a laptop
1642
1936
1940s
1970s
now
From the above form, we can know that the text is written in an order of ___________
time
Read the passage again. Find out the supporting details.

Paragraph 1:Over time I have been changed quite a lot
1. calculating machine
2. analytical machine
3. universal machine
4. PC and laptop
Paragraph 2: These changes only became possible as my memory improved.
1. tubes
2. transistors
3. chips
4. network
5. World Wide Web
Paragraph 3: Since the 1970s many new applications have been found for me.
1. communications
2. finance
3. trade
4. robots
5. mobile phones
6. medical operations
7. space rockets
8. providing a life of high quality
goal
Advantages and disadvantages of the computers.
Discussion
Advantages
communicate with friends
entertainment
do shopping
save a lot of time
store information
search for information
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.
Homework:
1.熟读课文,按时间顺序复述课文,记住文中的黑体字.
2.Writing: Should high school students surf the internet?

Post-reading
Work in group of four and brainstorm a list of things that you, your school and your family use computers for.
Discuss how computers have changed our lives.
Think about what you would have to do if you could not use computers any more.
Computer and Internet
can study online
play computer games
communicate with friends.
search useful information
listen to music
watch movies
……

根据构词法猜测词义
The meaning of the words in group A can all be guessed from their formation. Each pair of words has the same root（词根）.

technology
simple
person
real happiness
Words guessing
technological simplify personal
reality
happy
Work in pairs. Try to put these inventions in an
order according to the time when they appeared. Then read the passage quickly and check to see if you were right.

( ) analytical machine
( ) laptop
( ) calculating machine
( ) robot
( ) PC
( ) universal machine
( ) abacus
Pre-reading
3
6
2
7
5
4
1
I began as a __________ machine in 1642
in France. In 1822 I was built as an ________ machine. Then in 1936 Alan Turing wrote a book and built a _________ machine. As time________, I was made smaller but my memory got ______ and ______. In the 1960s they gave me a family connected by a ______. Now people call it the Internet. I was used in ______ and ______ since the 1970s. Since my birth I have truly been built to serve the human race.
calculating
analytical
universal
went by
larger
larger
network
offices
homes
Test in class
Summary