英语的基本问题?

你好
Hi!
How are you?
How are you doing?
How is everything?
Long time no see.
When was the last time I saw you?
Haven't seen you for ages.
What's up?/What's new?( 很好的朋友)
Good morning/Good evening/Good evening!

谢谢
Thank you!
Thank you so much.
Thanks a lot!
Thanks!
Thanks a million!
How can I thank you enough?
I really appreciate that.
不客气之类
You are welcome.
Anytime.
My pleasure.

你好
1，Hi ~ !(口语,轻松场合)
2, Hello !同上
3, Nice to meet you !(礼貌,文雅)
4, Nice to see you !同上
5, Glad to see you again (非初次见面)
6, How do you do ?(初次见面)
7, How are you ? (亲切,问候)

谢谢, 不用谢/ 不客气

1,Thank you ! My pleasure : )
2,Thanks ! You're welcome
3,Thanks a lot !
4,Thank you very much ! Not at all
5,You're very kind ! That's OK
6,I couldn't done it without you / your help !Don't mention