九年级英语上册 Chapter 2 Computers课件 上海牛津版

1、Chapter 2,Computers,Question discussion: What do you do with computers?,Do you know the names of these?,monitor,keyboard,floppy disk,drive,speakers,CD-ROM,mouse,Fill in the blanks:,1. The _ shows words and pictures. 2. You use the _ for typing in formation. 3. The _ _ records information. 4. The _ h

2、elps you to control the computer. 5. The _ _ contains all the computers electronics. 6. We can hear the sound from the _. 7. We put disks into the _ in the main unit.,monitor,keyboard,floppy,disk,main,unit,speaker,drives,mouse,Hidden helpers,Questions: Did you see computers many years ago? Are they

3、the same size? Where can you find the tiny hidden computers?,What kind of jobs can a computer do?,Fill in the blanks: Computers can _ very fast. They can also _, _ and draw things . They can _ you and _ _ with you. They can _ railways and _ aeroplanes and spaceships.,calculate,type,print,teach,play,

4、games,operate,fly,Is a computer cleverer than I am?,Why do we say a computer cleverer than human beings? True False or DK? 1. One day computers may be able to do most things that a human brain can do . 2. But computers cant be better than doctors, judges and teachers at doing their jobs. 3. We will

5、have nothing to do if computers do most of our work. 4. Computers have changed our lives a lot.,T,DK,F,T,How do we give computers instructions?,Look at this and think 10 PRINT AREA CALCULATOR 20 PRINT 30 PRINT Type: Rectangle TRIANGLE OR CIRCLE 40 INPUT s 50 REM,CD-Roms,Questions: How many pages of writing can a CD- Rom hold? What does a CD-Rom contain? Whats the advantage of a CD-Rom?,Brainstorming:,What will happen to us if comp