YOU SAID:
big brother what are you doing?
INTO JAPANESE
兄貴は何をしているの?
BACK INTO ENGLISH
What is your brother doing?
INTO JAPANESE
あなたの兄弟は何をしていますか?
BACK INTO ENGLISH
What are your brothers doing?
INTO JAPANESE
あなたの兄弟は何をしていますか?
BACK INTO ENGLISH
What are your brothers doing?
You've done this before, haven't you.