Deux constructions à SN antéposé en français

International audienceWe contrast two types of sentences with a preposed NP in French in a construction based HPSG grammar. They differ with respect to different grammatical aspects (syntax, semantics, pragmatics and phonology), which cluster uniquely into constructions. Both are colloquial, a reason why they have been recognized only recently (see Zribi-Hertz 1986, 1996, Sabio 1995, 2006). Accordingly, we rely for the data on spoken corpora (Corpaix, CFRP) as well as on our intuitions. Both constructions involve a partitioned semantics but this mode of composition is associated with different effects. One construction is characterized semantically: the preposed NP is the theme of a categorical proposition. The other construction is characterized pragmatically: it is associated with an independent declarative clause, a typical use of which is to signal a break in the interaction.Nous distinguons deux types de constructions introduites par un SN antéposé dans le cadre théorique HPSG. Ces deux types diffèrent selon plusieurs caractéristiques grammaticales (syntaxe, sémantique, pragmatique et phonologie). Ils relèvent plus spécifiquement de la langue parlée usuelle, ce qui explique qu'ils n'aient été isolés que récemment (voir Zribi-Hertz 1986, 1996, Sabio 1995, 2006)