Donner des réponses. - English

Hello, here is the answer on the Polyglot Wiki :
https://polyglotclub.com/wiki/Language/English/Vocabulary/Meaning-of-ain%27t

Hi there, "Ain't" is very informal, essentially slang. Is not is the expanded version of isn't, and has not is referring to the past.

"John is not drinking" (Present)
"John has not drank tonight" (Past)
"John ain't drinking" (Informal, present and more Americanised than the other 2)

I've lived here for 5 years: this implies that a person has lived there .
I've been living here for 5 years: this implies that a person has been living there. that is he is still living in that particular place

Ain't is also a regional word. In the midwest (U.S.), we very rarely use this word, but it can be more common in other regions.

As other answers indicate, AIN'T is a very informal slang for ISN'T.

It is indeed regional, and is common in the South and in City Centers.

I agree with the answer that recommends not to use it, as many American English speakers consider it improper, or even a sign of poor education, although it is very commonly used in the south, and is more accepted there than in Northern regions of the US.

Hi