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高中英语必修2 Unit3 Computers reading精品PPT课件免费下载高中英语必修2 Unit3 Computers reading精品PPT课件免费下载
Unit 3 Computers
Period 2 Reading
Answer for EX1& Ex2 on P56
1.floppy disc
2. chips
3. monitor
4. modem
5.CD-ROM
6.scanner
7. keyboard
8. printer
1.printer
2.hard disc
3.monitor
4.keyboard
5.modem
6.floppy disc
7.CD-ROM
words and expression
数学的
计算器
信息技术
个人电脑
依...看,据...认为
优点
缺点
算盘
掌上电脑
Vt.
Calculate
Information Technology
Personal Computer
advantage
disadvantage
abacus
palmtop
In one’s opinion
Mathematical
Calculator (n.)
IT
PC
Intelligence
Analytical machine
Universal machine
Transistor
Artificial intelligence
Technological revolution
function
智力
分析机
通用机
晶体管
人工智能
科技革命
功能
New Words and Expressions
Earliest computer
Analytical Machine
Nowadays computer
How does it change?
Who am I ?
Skimming:
1.who is the speaker ?
2.What’s the passage about?
It’s about the history of computer.
Time
The computer began as a calculating machine.
1822
Alan Turing wrote a book to describe how computers could be made to work and built a “universal machine”.
Computers had new transistors and became
Small and thin.
1960s
Computers were brought into people's homes.
Computers connect people all over the world
together.
Scanning:
What is the order of the text?
Alan Turing
calculating machine

PC (desktop
/notebook)
analytical
machine
universal
machine
artificial
intelligence

Internet
completing the chart below.
Charles Babbage
The “father” (inventor)
The history of computer
Alan Turing
Charles Babbage
Q1: How did the computer work as
an Analytical Machine?
The computer followed instructions
from cards with holes.
Q2: What makes the computer totally change his size.
New transistors
Q3: In which way did computers talk to
humans?
Using BASIC.
2. Questions
Q4: how did computer change in its size, intelligence, speed, function? And how about people’s opinion?
Size:

Intelligence:

Speed:

Function:

People’s opinion:
smaller
quicker
cleverer
dealing with …, communicating with…
clever
& useful
calculating
simple-minded
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
a universal machine
its birth
I became small and thin but I got cleverer and cleverer, quicker and quicker. And my memory became so large that I couldn’t believe it!
correct the wrong sentences
You are given a chance to design a future computer for yourself.
Draw a picture about it and describe(描述) what does it look like.
You will be asked to introduce(介绍) your computer. (appearance &functions)
Group work
virtual keyboards
虚拟键盘
Nose-top
keyboard-vest
What can the future computer be like?
What can we do by computer in the future?
Discussion
Homework:
1.熟读课文,按时间顺序复述课文,记住文中的黑体字.
2.做书上P19EX1和P20EX2
3.看报纸的B2版面
4.阅读导测P19 A篇
robot
What about in the future?
1960s
Consolidation: Retelling
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
Fill in the blanks:
I began as a _______ ________ in
1642 in France. In 1822 I was built as an
_____ ______. Then in 1936 Alan Turing
wrote a book and built a _______ ______.
As the years have___ ___, I have been made
___ ___ ____ but I got ____ ____ ___,
____ __ ____. In the 1960s they gave me a family____ __ __ _____. Now people call it
the Internet. I was _____ ____ ____ ___ in
the 1970s.So I became PC. Since my birth I
have truly been built to serve the human race.
calculating machine
Analytical Machine
universal machine
gone by
smaller and smaller
cleverer and cleverer
quicker and quicker
connected by a network
brought into people’s homes
Internet
1.What can the computer be used for?
Discussion
school work
games
emails
music and films
chat
information
photos
shopping
Our life has changed!