French phrase
~ sont-elles nécessaires ?
Meaning
Are ___ necessary?
When to use it
Asks whether several items are needed. It is useful when checking what to bring, with a slightly formal tone.
Example dialogue
Les bouteilles d'eau sont-elles nécessaires ?
Are water bottles necessary?
Non, il y a des points d'eau et des magasins.
No, there are water fountains and shops.