Ain't (Is not or Am not) - Tip #10 - Garrard McClendon. Ph.D.
Dr. Garrard McClendon explains "ain't" as an informal substitute for "is not" and "am not." For more tips, buy the book, "Ax or Ask? The African American Guide to Better English" at www.BlackEnglish.com or (800) 975-6044.