French phrase
Combien de temps doit durer ~ ?
Meaning
How long should ___ last?
When to use it
Asks how long a stay or contract should last. Used to check requirements or plans, including in somewhat formal settings.
Example dialogue
Combien de temps doit durer mon séjour ?
How long should my stay last?
Cela dépend du programme, souvent une année.
That depends on the program, usually about a year.