The article is devoted to highlighting the results of the study of prosodic parameters in the implementation of the imperatives in the texts of two types of institutional discourse, namely, lecture and preaching. Proceeding from the presence of common intentional criteria of lecture and preaching discourse (transfer of knowledge and formation of point of view / belief), these discourses are considered in the article as a special type of institutional teaching discourse with a similar compositional structure. In the implementation of the operational strategies of the lecturer and the preacher, an important role is played by the methods of stimulating the audience to communicative actions, which are carried out, in particular, by imperative utterances. The work contains a description of the results of a phonetic study of imperative utterances and their linguistic interpretation, as a result of which a systematic description of the prosodic organization of various types of imperatives used in lecture and preaching discourses is presented, the characteristic patterns of the intonation structure of the studied speech realizations are highlighted. On the basis of the conducted research, it was stated that loudness, tempo, phrasal stress and melodic contour are the main prosodic means of realizing motivation in any part of the text of a lecture or a sermon. Depending on the degree of participation of prosodic parameters in the implementation of imperatives, three main prosodic components were identified that participate in the differentiation of the type of lecture or sermon. In lecture discourse, the prosodic parameters that differentiate the classroom / online lecture are melody, stress and tempo. In preaching discourse, the main prosodic markers of the differentiation of temple / distant preaching are melody, rhythm and loudness. The audit analysis made a statement of the existence of a certain pattern in the use of imperatives, depending on the type of lecture and preaching discourses and their compositional part, and demonstrated the concentration of the largest number of differential intonation features in the introduction and the smallest - in the general main part of the texts. The main result of the audit analysis was the advancement of certain intonational parameters as informative for the implementation and differentiation of imperatives in various types of discourse.
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