Unit 3 Computers. 正安二中 袁先忠. monitor. screen. host computer. speaker. keyboard. mouse. What do they have in common?. A calculator. An abacus. A desktop. A notebook computer. digital camera. a laptop. palmtop. Reading: Who am I?.
A notebook computer
Who am I?
1 Who am I?
2 Who was the first person to invent the earliest computer?
3 Who was the next important person to design computers?
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 worldtogether.
card with holes
Underline the phrases &sentences that you think are important
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.”
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.
1.some words about computers.
2 the development of computers
3 some scientists relating to computers.
Advantages and disadvantages of the computers.
communicate with friends
listen to the music
see films & watch news
save a lot of time
do a lot of useful things
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
Recite Para one
Up load 上传
Home page 主页
Desk top 桌面
User name 用户名
3 Artificial intelligence
6 go by
7 deal with
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.
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 collected
has been saved
5.They say that some icebergs in the Far South ___________(pull) to Kuwait for drinking purposes in the future.
will be pulled
6.These questions ____________ (discuss) at the
will be discussed
A are introduced B have been introduced
C were introduced D had been introduced
2 Have you ever__ to the exhibition which __ for three
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
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
8 How long has this book been bought?
It has been decided
How long ago was this book bought?
It has been reported that free education will be offered to children.
It has been planned that the latest computer science course book will be offered to us.
I have been told by Peter that his notebook computer will be lent to me for a week.
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.