A：Good evening, Mr. Wu.
B：Good evening, Mr. Smith.
A：Have you met my wife, Mary?
B：No. I haven’t had the pleasure.
A：Mary, this is Mr. Wu, my new Chinese friend.
B：How do you do, Mr. Wu? Welcome.
A：How do you do?
B：Have a glass of wine, Mr. Wu? And let me introduce you to some of my guests.