General greetings (Formal)
- Hello!
- How are you?
General greetings (Informal)
- Hi.
- What’s up?
- Good to see you.
- How are things (with you)?
- How’s it going?
Greeting a person you haven’t seen for a long time (Formal)
- It has been a long time.
- It’s been too long.
- What have you been up to all these years?
- It’s always a pleasure to see you.
Greeting a person you haven’t seen for a long time (Informal)
- It’s been such a long time.
- Long time no see.
- It’s been ages since we last met.