On thetical grammar

Most frameworks of linguistic analysis tend to highlight phenomena of language use and/or language knowledge such as sentence and word structure, while backgrounding or ignoring other phenomena that are interpreted as being of more marginal interest for the linguist. The main goal of this paper is to argue that some phenomena that have previously been treated as being more peripheral play an important role in the organization of linguistic discourse, and that the latter operates in at least two different domains, namely that of sentence grammar and of thetical grammar. Each of the two domains has its own internal structure, and the two tend to be separated from one another syntactically, prosodically, and semantically. Building on recent research, the paper aims at defining the main characteristics of thetical grammar.