Politeness - French Phrases

When traveling in France, being polite is absolutely essential - be sure you know how to say "please" and "thank you" at the very least. Click any link to hear that word pronounced.

please
   s'il vous plaît (plural or formal)
   s'il te plaît (singular and familiar)*

please + verb (for example, "please excuse me")
   veuillez + infinitive (veuillez m'excuser)

thank you
   merci

thank you very much
   merci beaucoup
   merci bien

bless you! (thank you so much)
   mille fois merci

More ways to express gratitude


you're welcome
   de rien

it was my pleasure
   je vous en prie (plural or formal)
   je t'en prie (singular and familiar)*

don't mention it
   pas de quoi


pardon me, I beg your pardon
   pardon

excuse me
   excusez-moi

I'm sorry to disturb/bother you
   Excusez-moi de vous déranger

I'm sorry
   je suis désolé(e)


cheers
   à votre santé (plural or formal)
   à ta santé (singular and familiar)*

enjoy your meal
   bon appétit !


bless you (after a sneeze - learn more)
   à vos souhaits (plural or formal)
   à tes souhaits (singular and familiar)*


Sir, Mr.
   Monsieur

Ma'am, Mrs.
   Madame

Miss
   Mademoiselle   (learn more)


*Not sure which one to use? See my lesson on tu vs vous

Source: http://french.about.com/od/vocabulary/a/politeness.htm