Bonjour,
It's eleven o'clock = Il est 11h00
It's a quarter past six = Il est 06h 15
It's ten to seven = Il est 06h 50
It's twenty-five past twelve = Il est 12h 25
It's twenty to nine = Il est 08h 40
It's half past three = Il est 15h 30
Bon Courage ; )