unit 3 computers warming and pre-reading

课件31张PPT。Unit 3 ComputersWarming up & pre-readingguessing gameThe whole class will be divided into four groups ,and each group send a student to stand before the platform , who guess what the object is and the rest of the group mates can only do some movements to let his or her group representative guess what the object is and the group mates who guess the object must use the following expressions:
I think that……
In my opinion……
I believe that……1. I am a machine which is a good helper in doing house work.
I wash clothes for people. Who am I?washing machine2. A machine that you use to talk to other people even in a far-away place.
We are connected by wire or radio.
Now each of us often has a number.
Who am I?telephone3. With this you can watch different programmes just at home. I’m a machine that has a screen with moving pictures and sounds. But watching me too much is bad for your eyes. Who am I?TV set 4. I am a machine which moves very fast on four wheels. You need a license and must be very careful when you drive me. Rolls Royce, Benz and BMW are some famous kinds of
me. Who am I? carIt is a machine, which you can use to type your homework, draw pictures, play games, watch movies, listen to music, communicate with your friends, gather information… ComputerAbacus
算盘 An abacus is an old calculating machine used in China until now A huge computer A huge computer is built to solve some mathematical problems. But it is too big.Calculator
计算器 A calculator is a new calculating machine which can solve a large number of mathematical problems. PC personal computer A PC is a personal computer which can solve all kinds of problems and is used widely now.Notebook computer A notebook computer is a kind of useful computer which can be taken conveniently like a notebook.DiscussionIs it very important to learn computer skills for us? Why or why not?
Use the following expression in your discussion.
I think that ……
In my opinion …
I believe that …
What’s your reason?
Why do you think so?Components of a computerScannerPrinterMonitorFloppy DiskMouseSpeakerHow much do you know
about a computer???Give the English name of the
following pictures of the
computer components (组件)What is it in English??Main board(主板)What is it in English??CPU (central processing Unit)
中央处理器What is it in English??RAM
(随机存储器)
(Random Access Memory )What is it in English??hard disc
硬盘What is it in English??Keyboard (键盘)What is it in English??Power supply
(电源)What is it in English??CRT display
（Cathode?Ray?Tube阴极射线管）
纯平显示器 What is it in English??mouse
鼠标What is it in English??display card
显卡DVD ROM
Digital Versatile Disc Read Only Memory
数字通用光盘 What can we do on a computer and through the Internet?Computer and Internet type my homeworkdraw picturesplay gamescommunicate with my friends.gather information for my lessonslisten to musicwatch movies……UseTyping
Shopping
Calculating
Translating
Playing games
Communicating
Searching information
Editing multimedia documentsNowadays, what does a computer mean to you?A useful machine?
A wise expert?
A close friend?
You can use these expressions
in your presentation: I think that …
In my opinion …
I believe that …
I agree / disagree because …Computers have great power.
They make our lives more colorful and more convenient.
BUT
Don’t forget that computers are modern tools
which can’t take the place of real people.
Never ignore the people beside you or even far away. common adj. 普通的,共同的,常见的in common共同的,共有的,共用的have nothing in common
have little in common
have something in common
have a lot in commonYou know, Dorothy, you and I have one thing in common.
We just had nothing in common and I couldn’t communicate with his dull business friends.I suddenly felt we had a lot in common.