通用正式的：
这些问候语可以在任何情况下使用，商务会议或者拜见对方父母还有其它任何情况下。
Hello
How are you? or How’re you?
How are you doing? or How ya doin’?
注意，这与What are you doing？不一样，How are you doing? 的意思是你好吗？你怎么样？而What are you doing是在问对方在做什么？
How is everything?
How’s everything going?
非正式问候：
(Hey)， What’s up man？或者dude或者bro或者直呼对方的名字?
(Hey)， Good to see you.
(Hey) ，How are things (with you)?
(Hey)， How’s it going?
How’s life been treating you?过得怎么样？
What’s cracking? 相当于what‘s up?
What’s good?
What’s happening?
如果长时间未见：
正式：
It has been a long time.好久不见
It’s been too long.好久不见
What have you been up to all these years?这些年不见你怎么样？
It’s always a pleasure to see you.见到你总是很高兴
How long has it been?多久没见了？
What’s new?好久不见有什么新鲜事吗？
非正式：
Long time no see.
这是最常见的表达
Where have you been hiding?你躲到哪里去了？
戏虐的方式
It’s been ages (since I’ve seen you).
How’ve you been?
Jason: Do you know how many ways to make a greeting?
Answer:
Hello; Hi; Hey; Hiya; How are you?; How things wit you? How do you do? Nice to see you; ...本回答被网友采纳