use of "aint", clubbing, join, caught

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. When so we use “ain’t”?
  2. I went clubbing this weekend or it should be "I went for clubbing this weekend.
  3. I have joined a Jive class.
  4. My is bag is caught in the door
2

“I went clubbing.”

There is never a time that you should use “ain’t.” Use it only when you are deliberately being very informal.