Greetings
In English, There are three ways of speaking
Formal: If you are talking to someone for the first time, your boss or to elder people
Informal (or casual ): If you are talking to your family or your friends
Slang: You can use it just with your friends or with someone who is really close to you
Formal greetings
!Hello *
?How are you *
?How are you *
Good morning / Good afternoon / Good evening *
?How have you been *
?How do you do *
It's nice to meet you / or pleased to meet you *
It's nice to meet you / or pleased to meet you *
Informal greetings
!Hi , Hey or Hey man *
?How is it going *
?How are you doing *
?What's up? What's new? What's going on *
?How is everything? How is life? How are things *
?How's your day? How's your day going *
Good to see you (or) nice to see you *
long time no see (or) it's been a while *
Slang
!Yo *
?Are you okay? or you alright? or Alright mate*
!Howdy *
It's a word comes from the cowboy culture and it's same as How are you?
?Sup? or Whazzup? = What's up *
G'day mate = Good day *
?Hiya! = How are you *
?How are ya? = how are you *
Now, it's time to know how to give an answer to these greetings
Formal
!Hello *
I'm fine, thank you *
Good morning / Good afternoon/ Good evening *
I've been well / I've been a bit sick *
I'm doing well *
It's nice to meet you, too / or pleased to meet you, too *
Informal
!Hey! (or) hi *
It's going well *
I'm doing well *
Nothing / not much / or not bad *
Good *
Fine *
Good to see you, too (or) nice to see you, too *
Slang
!Yo *
Yeah, fine / alright *
Hey *