We’ve seen how we can use words like le mien, le tien when we have one owner. For several owners, you can use le (or la) nôtre, le (or la) vôtre, le (or la) leur if you have one thing. If you have multiple things, you’d use the plural forms les nôtres, les vôtres, les leurs.
Notre maison est petite, la vôtre est plus grande.
Our house is small, yours is bigger.
Nos parents sont âgés, les leurs sont plus jeunes.
Our parents are old, theirs are younger.
Leurs meubles sont vieux, les nôtres sont neufs.
Their furniture is old, ours is new.
N’importe quel (or quelle) means just any or whichever. Quel will change if it’s feminine or plural.
Tu peux mettre n’importe quelle robe.
You can wear just any dress.
Appelle n’importe quel dentiste.
Call just any dentist.
On ne peut pas choisir n’importe quelle chambre.
We can’t choose just any room.
If you want to address the public in a formal way, you will start with mesdames et messieurs. You can write mesdames et messieurs also at the beginning of a formal letter.
In a more informal situation, like in a restaurant, you will hear the expression messieurs‑dames.
Bienvenue à notre restaurant, messieurs‑dames.
Welcome to our restaurant, ladies and gentlemen.
Bonsoir, mesdames et messieurs les Députés.
Good evening to all the deputies.