Her smile expressed her thanks.
- Son sourire exprimait sa gratitude.
He hides his sorrow behind a smile.
- Il cache sa tristesse derrière un sourire.
He grinned broadly at us.
- Il nous fit un large sourire.
The man grinned widely and stood up. He then paid the bill and emptied his glass of beer in one gulp.
- L'homme fit un large sourire et se leva. Il paya alors l'addition et vida sa bière d'une seule gorgée.
She looked at him with a smile on her face.
- Elle le regarda, le sourire aux lèvres.
I saw a joyful smile on his face.
- Sur son visage, je vis un joyeux sourire.