Slides in Interjections
'You would say this if you want somebody to keep quiet. A librarian may say shhh, if you are speaking too loudly in the library'. You cannot say this to people in authority (for example, teachers)bas it would be very impolite!
For example, Shhh!
Mark: 'Hey Michael, have you finished your work yet?'
Michael" 'Shhh! I'm trying to concentrate!'