Explanation
Indicates that something cannot be done before a certain action is completed; 'not until', 'only after'.
Formation
Verb-て + からでないと
Detailed explanation
The ～てからでないと grammar point is used to express that an action cannot be done before another action has been completed. It can be translated as 'not until' or 'only after' in English. It attaches to a verb in the て-form, plus からでないと.
Examples
Shukudai o shite kara denai to, asobi ni ikemasen.
You cannot go play until you’ve finished your homework.
Shokuji o shite kara denai to, dezāto o taberaremasen.
You cannot eat dessert until after having a meal.
Chiketto o katte kara denai to, eiga o miraremasen.
You can’t watch the movie until after you buy a ticket.
Shiken ga owatte kara denai to, yasumi o toremasen.
You can’t take time off until the exam is over.
Practice
Grammar content sourced from hanabira.org.