Unit 3 Computers
reading
keyboard
mouse
monitor
screen
speaker
host computer
What do they have in common?
An abacus
A calculator
A desktop
A notebook computer
digital camera
a laptop
palmtop
Reading:
Who am I?
Listen to the tape 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.
timeline
1642: The computer began as a calculating machine.
1822: the Analytical Machine was built by Charles Babbage.
1936: Alan Turing wrote a book to describe how computer could be made.
1960s: Computer had new transistors and became smaller.
1970s: Computers were brought into people’s homes.
Now: Computers connect people all over the world together.
Scanning
Calculating machine
Computer
Internet
Analytical machine
Artificial intelligence
Universal machine
The development of computers:
Useful phrases
calculating machine
Analytical machine
card with holes
technological revolution
universal machine
artificial intelligence
go by
by internet
human race
计算器
分析机
穿孔卡
技术革命
万能机,通用机器
人工智能
走过，过去
通过网络
人类
The development of computers:
Calculating machine
Analytical machine
Universal machine
Artificial intelligence
Computer
Internet
Intensive reading:
Underline the phrases &sentences that you think are important
Star sentences
P1 L2 I followed instructions from cards with holes.
P1 5 Earlier I was not very big, but then I became huge.

P1 L6 However, people thought I was simple-minded until they discovered I had “artificial intelligence.”
我执行穿孔卡的指令
早些时候我并不是很大，但是后来我变得非常大
可是，人们认为我头脑简单， 直到发现我有人工智能时，
他们才不那么想了。
P1 L8 As the years have gone by, I have been made smaller and smaller.

P2 L1 There were times when my size was totally changed.

P2 L3 But I was always so lonely standing there by myself,until in the early 1960s,they gave me a family connected by a network.
随着岁月的流逝， 我被做得越来越小了
有段时期我的体积完全变了
但是我总是孤孤单单地站在那里，直到60年代初， 人们才
给了我一个用网络连接的家庭。
Summary: what have we learned?
1.some words about computers.
2 the development of computers
3 some scientists relating to computers.
Advantages and disadvantages of the computers.
Discussion
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
Homework
Recite Para one
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
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
After all 毕竟；终究；归根结底
Watch over : take care of 照料；照管。
Wander v. 游荡；闲逛。He was wandering aimlessly.
Wonder v. 感到好奇／n 奇观　I wonder who he is.
Learning about language
EX.1
1 totally
2 revolution
3 Artificial intelligence
4 birth
5 simple-minded
6 go by
7 deal with
8 network
9 truly
10 anyway
EX.2
revolution
network
went by
totally
truly
simple-minded
Anyway
deal with
Discovering useful structures
As the years have gone by, I have been made smaller and smaller.
my family and I have been used by billions of people
to deal with Information------

I have truly been built to serve the human race------
现在完成时的被动语态（have/has + been+过去分词）
Someone has told me the sports meet might be put off.

We have brought down the price.

I have been told the sports meet might be put off.
The price has been brought down.
__
__
__
__
Great changes______ in the city, since the reform and opening to the outside world, and a lot of factories ______.

［A］ have been taken place, have been set up［B］ have taken place, have been set up［C］ have taken place, have set up［D］ were taken place, were set up
The road has been repaired.
道路已经修好了。
这本书已被译成英语。
This book has been translated into English.
1.This part of the seabed ______
(explore) many times.

2.Much useful information about these planets _____
_ (collect) since 1971.
3.Much parking space in cities _____
(save) by using small cars.
has been saved
has been collected
has been explored
5.They say that some icebergs in the Far South ___________(pull) to Kuwait for drinking purposes in the future.
6.These questions ____________ (discuss) at the
next meeting.
will be pulled
will be discussed
1 I know Mr. Brown; we___ to each other at an international conference.
A are introduced B have been introduced
C were introduced D had been introduced
2 Have you ever__ to the exhibition which __ for three
weeks?
A gone; has been shown B visited; shown
C been; has been on show D went; lasted
3 The boy whom you lent the bike to __ by a car.
A hit B be hit C having been hit D was hit
4 I want to buy that kind of cloth because I __ the cloth __ well.
A have told; washed B have been told; washes
C was told; washed D have been told; is washed
B
C
D
B
5 The mayor of Beijing says all construction work for the
Beijing Olympics__ by 2006.
A has been completed B has completed
C will have been completed D will have completed
6 The bridge___ away by floods and the fields___ by water.
A had been washed ; were covered
B has been washing ; is covered
C had been washed; had covered
D has been washed; is covering
7 It has decided that we’ll go on a study trip to London next
summer.

8 How long has this book been bought?
C
A
It has been decided
How long ago was this book bought?
Using structures
It has been reported that children will be off free education.
It has been reported that free education will be offered to children.
It has been said that we will be offered the latest computer science course book.
It has been planned that the latest computer science course book will be offered to us.
I have been told by Peter that I will be lent his notebook computer for a week.
I have been told by Peter that his notebook computer will be lent to me for a week.
Translation
1 This type/kinds of computer has been specially designed for teachers and students.
2 The needs of the teachers and students have been greatly considered.
3 With the help of computer, you may not find it hard to deal with and share information.
4 Besides, you can easily communicate with people all over the world by Internet.
5 This will cost a lot of money, but after all, it is worth buying a computer for every teacher.
6 She uses the computer so well that she doesn’t often write with a pen and paper.
7 If a new situation arises, they will make up new programmes.