What do you do and say when you meet someone for the first time?要用英文回答!How important are the first two or three minutes of these opening contacts?

HI..what a wonderfull weather today!

I shake hands with him and say hello to him .

He and I

HOW DO YOU DO ?

Say "How do you do?"and shake hands with him.

i like to first introduce myself and follow it with a firm handshake.

You should say "how do you do?"first,and then say "I 'm XX,glad to see you"

HOW DO YOU DO Nice to meet you!
这是百分百的.外国人第一次见面第一句就是这个.
How important are the first two or three minutes of these opening contacts?
Very important,It will decide the first impression.

First ,i will say "How do u do?i am XXX."And say "nice to meet u."