ABSTRACT
Grammatical category referring to that part of sentential modality which is structurally encoded, for example, by verbal mood, such as indicative or imperative, and by word order. Sentential modality, in turn, is the communicative role played by a sentence’s propositional content in discourse (illocutionary force) as expressed by linguistic means. Please keep quiet! expresses the sentential modality of a polite request, the sentence mood is imperative.
