1. "Ain't" for "am not," "is not," "are not"
"Ain't" can be used to replace "am not," "is not," and "are not" in negative and contracted sentences.
Examples:
• I ain't going to the party. (I am not going to the party.)
• He ain't here right now. (He is not here right now.)
• They ain't coming with us. (They are not coming with us.)
1. "Ain't" for "have not" or "has not" "Ain't" can also be used to replace "have not" or "has not" in negative and contracted sentences.
Examples:
• I ain't seen that movie yet. (I have not seen that movie yet.)
• She ain't finished her homework. (She has not finished her homework.)
3. "Ain't" for "isn't" or "aren't" in informal language
In informal language, "Ain't" can be used to replace "isn't" or "aren't" in negative and interrogative sentences.
Examples:
• Ain't he your brother? (Isn't he your brother?)
• They ain't coming, are they? (They aren't coming, are they?)
Conclusion:
"Ain't" is a commonly used informal word in spoken language. However, it is important to use it with caution as it is not considered a standard word in formal written English. It is preferable to use alternative forms such as "am not," "is not," "are not," "have not," or "has not" in more formal contexts.