Unit 3 Computers

正安二中 袁先忠

keyboard mouse

monitor screen

speaker

host computer

What do they have in common?

An abacusA 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.

timelinetimeline1642: 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 intelligenceComputer

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.11 totally2 revolution3 Artificial

intelligence4 birth5 simple-minded6 go by7 deal with8 network9 truly10 anyway

EX.2revolutionnetworkwent bytotallytrulysimple-mindedAnywaydeal 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 introducedC were introduced D had been introduced2 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; lasted3 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; washesC 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 completed6 The bridge___ away by floods and the fields___ by water.A had been washed ; were coveredB has been washing ; is covered C had been washed; had coveredD has been washed; is covering7 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.

Translation1 This type/kinds of computer has been specially

designed for teachers and students.2 The needs of the teachers and students have be

en greatly considered.3 With the help of computer, you may not find it ha

rd to deal with and share information.4 Besides, you can easily communicate with peopl

e all over the world by Internet.5 This will cost a lot of money, but after all, it is wo

rth 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.