1. 问候
a. Good morning / afternoon / evening. Hello / Hi!
b. How are you?
c. Fine, thank you. And you? / Very well, thank you.
2. 介绍
a. This is Mr. / Miss / Mrs. …
b. How do you do? Nice / Glad to see / meet you.
c. My name is… I'm a student / worker, etc. ( here).