The teachers at school teach us these phrases that we can use instead of "How are you?" which of them are natural English and commonly used and which are uncommon?
I know surely that "How do you do?" is just a very formal "Hello!" but somehow our teachers not know of this!
Also "What's up?" and "What is up?" are synonyms, the latter, I think, is rare and uncommon.
I also think that "Wazap?" and "Wassup?" are too informal and mostly black people use them.
P.s. I'm not in school.
Best Answer
Informal, common
What's new?
What's up?
What's happening?
How are you getting along? (not standard but not uncommon)
How goes it?
How's life?
How are things?
How's it going?
Neither formal nor informal, common
How are you?
How are you doing?
Formal, common
How do you do? (very formal)
I have never heard anyone say in greeting:
What gives?*
Wazap?
What's the rumpus?
How wags the world?
How is the world using you?
How fares it?
How's by you?