Google finds 52,000,000 matches for ain't but non-natives simply can't look up this word. Wiktionary isn't helpful. Is it some kind of 'wildcard' for "am/is/are not"?
Over 10 years ago saying "ain't" was discouraged but it was gaining momentum. What happened? Seems like it's still discouraged. Maybe in another 10 years?
When helping an Italian speaker with her written homework, a cover letter, I told her to change the expression nowadays to that of today. Her original sentence was the following: I would be ...