I know the rule for liaison in compound verb construction is in between auxiliary and verb, such as 'je suis all/e', where the s at the end of suis would be pronounced. What if it were in the case of a simpler verb, such as choisir - choisis? The only reason I'm asking is that I have never heard anyone pronounce the s at the end of choisis in any setting. For instance, 'Tu choisis un livre'. I can't really think of an application for such a weird sentence in that I would probably use 'es en train de choisir', but hypothetically in this case, would we perform a liaison on 'choisis un', or would this s stay silent? Thanks in advance

  • 1
    Il est en retard, je suis à Rome, nous avons eu beaucoup de chance : liaison facultative dans chaque cas.
    – Luke Sawczak
    Aug 9, 2022 at 23:07
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    In the interrogative: choisit-il ...? there is a mandatory liaison. For il choisit un ..., it's technically an optional liaison, but it's an optional liaison that hardly anybody makes today. Aug 11, 2022 at 11:47

1 Answer 1


This liaison is optional and most people including me won't perform it.

Note: Tu choisis un livre is not a weird sentence.

Au début de chaque projet, tu choisis un livre, n'importe lequel : tu n'as qu'à te laisser guider par ton inspiration, tes goûts du moment ou encore par le thème du projet en cours.

    Françoise Dulude, Signet : français : 5e année, 1998.

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