were to

si … devait

→ be
phrase Very common #1,199
si … devait S’emploie surtout dans des hypothèses, souvent après « if », pour parler d’une situation possible mais peu probable.
EN: If I were to move abroad, I would learn the language first.
FR: Si je devais m’installer à l’étranger, j’apprendrais d’abord la langue.

If anyone were to talk to me like that, I would call the police.

Si quelqu’un me parlait comme ça, j’appellerais la police.

What would happen if somebody were to blow up that bridge?

Que se passerait-il si quelqu'un faisait sauter ce pont ?

— The Good, the Bad and the Ugly (1966)

If someone were to block you, it wouldn't be me.

Si quelqu’un devait te bloquer, ce ne serait pas moi.

— The Garden of Sinners: Paradox Spiral (2008)

What would you do if war were to break out?

Que feriez-vous si la guerre éclatait ?

What if she were to lay an egg for Fugga.

Et si elle pondait un œuf pour Fugga ?

— Super 30 (2019)

But if people were to do away with this fear, everything would change.

Mais si les gens parvenaient à se débarrasser de cette peur, tout changerait.

— The Sacrifice (1986)

What a waste it would be if Tatoeba were to link nothing but sentences.

Quel gâchis ce serait si Tatoeba ne servait à relier que des phrases.

What would you do if the world were to come to an end tomorrow?

Que feriez-vous si le monde devait s'arrêter demain ?