steponaknee (corrigez-moi svp)

[mighty frigate]

Please be patient

Our volunteers look into many questions every day; sometimes it takes them a little while to answer.

Pro tip: you can rename the thread title with `.tr <thread name>`

Make it descriptive, including relevant context, but also to the point. This way you improve your chances of getting a more relevant and specific answer.

[meager parcel]

Both work.
"comment ça" is closer to "what do you mean", while "comment ça se fait" explicitly means "how is it possible"

[glacial smelt]

but how come in english just means why

so, pour quoi

[foggy blade]

"pourquoi" likely works in most cases