many fields. So, the 21st century is the century of information technology What does it mean? Does information technology/ IT only mean things like computers? Of cause not. Actually, it means more than computers. Computers are just one kind of IT. What else do you know is part of IT?

(TV, radio, CD-ROM, DVD, books......)

Step3. Listening (SB)

1. Pre-listening: What are the changes brought by different forms of IT ?

What are the advantages and disadvantages of them ?

2. While-listening:

Go through the chart and make sure the students look at the chart before they listen to the tape. (This is to sharpen their attention and listen for the answers. This will also help them get the gist of the text.) Then Listen to the tape and finish filling in the chart. (If necessary, play the tape for several times.)

Say: After listening to their talk, we know all kinds of IT have both disadvantages and advantages．Let's check the answers together.

Type of IT Advantages Disadvantages

TV You can both listen and watch． You cannot write to friends．

Web You can find information． It is very expensive．

Radio You can listen to English． You cannot watch a film．

Book You can get information． Sometimes it is out of date．