YOU SAID:

You don’t know why you’re going back tomorrow

INTO JAPANESE

なぜ、明日帰るか分からない

BACK INTO ENGLISH

I don't know why, going back tomorrow

INTO JAPANESE

私はなぜ、明日戻って行くのか分からない

BACK INTO ENGLISH

I do not know why I will go back tomorrow.

INTO JAPANESE

明日はなぜ戻ってくるのか分からない。

BACK INTO ENGLISH

I do not know why tomorrow will come back.

INTO JAPANESE

なぜ明日が戻ってくるのか分からない。

BACK INTO ENGLISH

I do not know why tomorrow will come back.