YOU SAID:
I chime in haven't you people ever heard of?
INTO JAPANESE
私はあなたの人々がこれまでに聞いたことがないのですか?
BACK INTO ENGLISH
I have never heard of your people before?
INTO JAPANESE
私はあなたの人々について聞いたことがありませんか?
BACK INTO ENGLISH
Have I never heard about your people?
INTO JAPANESE
私はあなたの人々について聞いたことがありませんか?
BACK INTO ENGLISH
Have I never heard about your people?
You've done this before, haven't you.