You could call on them to say a few words.
Is it ok to say like this in hosting
"I request Mr.John to deliver a speech"
(its a official meet, and the topic is open, the person is my director)
If the person's family name is "John" (e.g., Michael John) then this is okay.
However, we don't use "Mr." with a first name. If his name is "John Smith" then say "Mr. Smith" not "Mr. John."
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
However, in some countries where English is used in education, the use of 'Mr/Ms/etc' plus forename is considered polite.
When my wife and I worked in Oman, I was Mr Jed and she was Dr Andrea. We did not like this - it was unnatural in the language we were supposed to be teaching, but we had to accept the custom of the country.
Last edited by 5jj; 30-Aug-2013 at 13:18. Reason: typo