YOU SAID:
You never know what's going to happen until tomorrow
INTO JAPANESE
あなたは明日まで何が起こるかわからない
BACK INTO ENGLISH
You don't know what will happen until tomorrow
INTO JAPANESE
明日まで何が起こるかわからない
BACK INTO ENGLISH
I don't know what will happen until tomorrow
INTO JAPANESE
明日までどうなるかわからない
BACK INTO ENGLISH
I don't know what will happen until tomorrow
You've done this before, haven't you.