How Much Room for Discourse in Imperative? The Lens of Interface on English, Italian and Spanish ^*

This paper discusses root phenomena in imperative clauses, assuming as diagnostics conversational dynamics and the type of discourse categories that are admitted their C-domain, through a systematic comparative interface investigation three languages (English, Italian Spanish) based on an original experimental work. novel perspective sheds new light syntax-semantics mapping (syntax-prosody) properties embedding relevant proposal cartographic framework analysis. Based twofold distinction – those which widely allowed Common Ground-active (Type I) contexts can occur non-Common II) it is proposed imperatives propositions with no update potential, thus allowing only Type II phenomena. Syntactically, clauses dominated by super-ordinate Speech Act Phrase, including Speaker Addressee co-arguments, explains blocking effects identified imperatives.