doesn't happen

It doesn't happen twice.

Ça n’arrive pas deux fois.

— Mystic River (2003)

I hope something bad doesn't happen to us.

J’espère qu’il ne nous arrivera rien de mal.

This doesn't happen even in western culture.

Cela ne se produit même pas dans la culture occidentale.

— Piku (2015)

Let's hope that doesn't happen again.

Espérons que cela ne se reproduira pas.

That kind of thing doesn't happen in this neighborhood.

Ce genre de choses n’arrive pas dans ce quartier.

I know it doesn't happen to you.

Je sais que ça ne t’arrive pas.

— The Secret in Their Eyes (2009)

But this doesn't happen every day.

Mais cela n’arrive pas tous les jours.

— Bicycle Thieves (1948)

It doesn't happen very often.

Ça n’arrive pas très souvent.

Which doesn't happen often.

Ce qui n’arrive pas souvent.

— Once Upon a Time in the West (1968)

We hope that doesn't happen again.

Nous espérons que cela ne se reproduira pas.