面試英語口語:你有外幣收入嗎?

"Do you have any outside income?"

This might be a job interview question, or it could be a question when you are talking to a creditor. In either case, you can simply reply with a yes or no. If it is a yes, then briefly tell them the other source of income.

"I get paid child support from my ex-husband."
"I have a rental property."

"No. I do not."