Greetings

There are many English expressions for greetings, ranging from informal to formal ones.  Below are some common expressions.　

Informal Greetings
 

Hi! 

Hello! 

What's up?

What's new?

How's it going?

 

More Formal Greetings
 

Good morning.  How are you today?

Good afternoon.  How's everything?

Good evening.  How have you been?

Greeting Someone You Haven't Seen for a while
 

I haven't seen you in ages!  How have you been?

How're things going?

How are you getting along?

Long time no see! (Informal)

Greeting Someone You Are Surprised to See
 

Fancy meeting you here!

Never thought I'd see you here!

What a surprise to see you here!