ãÂâ€Ã§Â´Â¹Ã¤Â»â€¹Ã£Â—ã¾ã™。(goshoukai shimasu.) = I'll introduce.
ã“ã¡らãÂÅ’_____ã•んã§ã™。(kochira ga _____ san desu.) = This is Mr./Ms. ____.
For example, ã“ã¡らãŒ鈴木ã•んã§ãÂâ„¢(kochira ga suzuki san desu).
This is used when you introduce guests. Use "_____ã§ãÂâ„¢(____ desu)", for example 鈴木ã§ãÂâ„¢(suzukidesu), instead of "ã“ã¡らãÂÅ’_____ã•んã§ãÂâ„¢" when you introduce your colleague. Because you have to say it in the non-polite way.
In brief,
When you introduce guests:
ãÂâ€Ã§Â´Â¹Ã¤Â»â€¹Ã£Â—ã¾ã™。(goshoukai shimasu.)
ã“ã¡らãÂÅ’_____ã•んã§ã™。(kochira ga _____ san desu.)
When you introduce your own colleague:
ãÂâ€Ã§Â´Â¹Ã¤Â»â€¹Ã£Â—ã¾ã™。(goshoukai shimasu.)
_____ã§ã™。( _____ desu.)