Would

In the winters

(indicating an action in the past that happened repeatedly or commonly)

Pourriez-vous

(used to express a polite request)

Veuillez éteindre la télévision

(used to express a polite request)

We sat on the bench

(indicating a possible (but not definite) future action or state)

pouvoir

(used to express a polite request)

s'il te plaît?

(used to express a polite request)

s'il vous plaît?

(used to express a polite request)

veuillez

(used to express a polite request)

vouloir

(used to express a polite request)