French phrase
Combien de temps dois-je ~ ?
Meaning
How long should I ___?
When to use it
Asks how long an action should continue. It is polite and neutral, often used to check a duration or deadline.
Example dialogue
Combien de temps dois-je rester ici ?
How long should I stay here?
Vous pouvez rester jusqu'à dimanche.
You can stay until Sunday.