Three short studies on some verbal and nominal predicates of communication – We recall in this paper the fact that derivational properties are transformational properties as well. Hence the theoretical possibility of collecting some verbs, nouns, and adjectives into the same syntactico-semantic class of predicates. A few examples are provided of such “extended classes of predicates”: the predicates of congratulating and thanking, of manner of speaking, of predicting and of information following a demand. Thus the classification of the French verbs by Jean Dubois et Françoise Dubois-Charlier is confirmed by the properties of the possible nominal counterparts. Moreover, taking the noun properties into account brings in the fore certain syntactico-semantic subclasses the verbs themselves cannot reveal.