YOU SAID:
what are you doing on top of that roof
INTO JAPANESE
その屋根の上で何をしているの?
BACK INTO ENGLISH
What are you doing on that roof?
INTO JAPANESE
そこで何をしている?
BACK INTO ENGLISH
What are you doing on that ship?
INTO JAPANESE
そこで何をしている?
BACK INTO ENGLISH
What are you doing on that ship?
You've done this before, haven't you.