+0
hi everyone..what are the polite ways of expressing that you don't recognise someone?

Swaminathan..
+0
"I'm sorry! I didn't recognize you (with your new haircut, without your beard, after all these years, etc.)" should all work. That is, if you should have recognized the person.

If you don't know the person, try "I'm sorry, but I'm not sure I've had the pleasure of meeting you".
+0
Another:

"I'm sorry, haven't we had the pleasure of meeting before?"
Students: Are you brave enough to let our tutors analyse your pronunciation?
Comments  
hi..thanks one and all for your help..

Swaminathan..
Site Hint: Check out our list of pronunciation videos.