The Word "Ain't"

The Word "Ain't", which is the topic of composition I chose is coming from ESL website, and this website is advantage for people who want improving their listening.
This composition is talk about a word "Ain't". The "Ain't" is an example of nonstandard English, and it’s an attempt to combine the words "am" and "not" in a way similar to the way that "don't" combines "do" and "not". Experts say it first appeared in English in 1778. They do not like this word because it was used by uneducated people. The meaning of "Ain't" also expanded to include "is not", "have not" and "has not" as in the expression "I Ain't got anything." Sometimes, we can hear it as a right word in informal speech or some people use it in a joking way, but it is not used in writing.