French language Q&A Forum

Hi, to say “I must” is there a difference between when one would use ‘Il faut que je …” instead of “je dois”? Or are they equivalent? (I believe devoir is simply followed by an infinitive rather than by the subjunctive with falloir, so it’s simpler to use!)  Thanks.

In the phrase "mais j'ai trouvé très utile d'y ajouter les exercises Hanon que tu m'avais recommandés"
shoudn't it be "exercices" instead of "exercises"?

In Germany "ein Pfund" (a pound) is used for 500 gm (one pound = approx. 454 gm). Do the French use "une livre" this way? If not, what would they sell by the pound instead of by the kilo?

If I have "Je parle aux enfants" will it be

"Je leur parle" or "Je les parle" ?

When to use which?

Why is Mona Lisa changed to Jaconde ? And why is bateau mouche and not fluvial?