Greeting Expressions

• Formal general greetings
  
  1. Hello!
  2. How are you?
  3. How are you doing?
  4. How is everything?
  5. How’s everything going?
   
• Informal general greetings
  
  1. Hi.
  2. What’s up?
  3. Good to see you.
  4. How are things (with you)?
  5. How’s it going?
   
• Greeting a person you haven’t seen for a long time (Formal)
  
  1. It has been a long time.
  2. It’s been too long.
  3. It’s always a pleasure to see you.
  4. How long has it been?
  5. I’m so happy to see you again.
   
• Greeting a person you haven’t seen for a long time (Informal)
  
  1. How come I never see you?
  2. It’s been such a long time.
  3. Long time no see.
  4. Where have you been hiding?
  5. It’s been ages since we last met.