French phrase
Puis-je éteindre ~ ?
Meaning
May I turn off ___?
When to use it
A polite way to ask permission to turn something off. It suits shared spaces and has a somewhat formal tone.
Example dialogue
Puis-je éteindre la lumière ?
May I turn off the light?
Oui, bien sûr, merci de l'éteindre en partant.
Yes, of course. Thanks for turning it off when you leave.