YOU SAID:

If I drive before 16 my sister will die tomorrow

INTO JAPANESE

16時前に運転すると妹は明日死ぬ

BACK INTO ENGLISH

If you drive before 16:00, your sister will die tomorrow

INTO JAPANESE

16:00より前に運転すると、妹は明日死にます

BACK INTO ENGLISH

If you drive before 16:00, your sister will die tomorrow