YOU SAID:

Hi Jean-Jacques, how old are you ?

INTO JAPANESE

こんにちは、Jean-Jacques、何歳ですか？

BACK INTO ENGLISH

Hi, Jean-Jacques, how old are you?

INTO JAPANESE

こんにちは、Jean-Jacques、あなたは何歳ですか？

BACK INTO ENGLISH

Hi, Jean-Jacques, how old are you?