How to have a countdown between commands in a bash script.

[linuxvstheworld]

I want to make a script that'll seem the computer is talking to you, right? But It'll go way to fast as the script'll run it all very fast, is there anyway to have a command that delays between two? Like this....

echo Hello
[Command to delay a couple of seconds]
echo blah blah, so on and so forth..

[Vaphell]

sleep n where n is number of seconds

[linuxvstheworld]

sleep n where n is number of seconds

Thanks! Didn't know it was that simple! I will try it when I get to my Ubuntu computer at home and tell you if it works......