The French language is known for being the language of love and for being a romantic language. Knowing the lingo is an advantage but not always necessary! There are two ways of addressing a woman in French. If she is married you would refer to her as Madame. However, if the lady in question is single or unmarried you would refer to her as Mademoiselle. It is not always easy to know whether the lady is married or not (without desperately looking for a wedding ring) so pick one and hope for the best. If the lady expresses that she is not what you referred to her as or you notice you have made a mistake you can apologise by saying Pardon.