French phrase
Que fait-on si ~ ?
Meaning
What should you do if ___?
When to use it
Seeks the appropriate response to a problem. Practical and direct, especially for travel or administrative difficulties.
Example dialogue
Que fait-on si on perd son passeport ?
What should you do if you lose your passport?
Il faut contacter l'ambassade et faire une déclaration de perte.
You need to contact the embassy and file a loss report.