How would you say: "How is it that you know French?"

Comment est-il que tu sais le français?

Merci à tous.

1 Answer 1


An idiomatic, casual way would be:

Comment ça se fait que tu parles/comprends/lis le français ?

One century ago, you might have heard :

Comment se fait-il que tu saches le français ?

It would be still understood but this form is outdated or at least very literary.

If you insist to use savoir, that can be:

Comment ça se fait que tu sais parler français ?

  • Merci. Vous n'ajoutez pas le verbe savoir dans ce context?
    – Cantor
    Commented Jan 5, 2020 at 11:09
  • Answer updated.
    – jlliagre
    Commented Jan 5, 2020 at 11:23
  • Simplement, et utilisable aujourd'hui : "Comment se fait-il que tu parles/connaisses le Français" marche aussi.
    – MakorDal
    Commented Jan 6, 2020 at 11:13
  • 2
    Rectification on the use of "Comment se fait-il que...": this is still very much used in middle-to-higher social categories and formal contexts. Personally, I use it just as frequently as "Comment ça se fait", and I'm neither 100 years old nor speaking like Balzac :)
    – ledebutant
    Commented Jan 7, 2020 at 8:38

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