what expressions are most commnly used ?

[sky753]

hi everyone:
as far as i know ,when we chinese meet for the first time .the most common expressions we use is "你好!" which means "hello"
what is the most common used expression when americans meet for the first time? and how do they greet each other?
thank you! :)
weiqun ding

[Tdol]

Hi
Hello
Yo

[Natalie27]

Hi
Hello
Yo

Hi, how are you doing?
Hi, nice to meet you.
Hi, my name is...how are you doing?