Theory of phonetics

syntactic
They separate phonopassages, phrases, and intonation groups.
emphatic	Serve to make especially prominent certain parts of the utterance, e.g. D o you know who I am? I am your would-be mother-in-law. Emphatic pauses often keep a listener in suspense and therefore it is an effective device to arrest one’s attention.
hesitation pauses	Are mainly used in spontaneous speech to gain some to think over what to say. They can be vocalized, e.g. Hm | I really have no idea. A vocal pause appears as a result of a speaker’s intention to create an illusion of uninterrupted speech.

While teaching students we are to realize that intonation patterns can range in various ways - from completely colourless in meaning to extremely emphatic. Prosody as a phonostylistic universe is of great importance being a background of any communicative process. It serves not only a mechanical function, it gives an implication of some attitude or emotion to a listener.


II. The communicative function of intonation. It is realized in various ways. It serves:

1. 
   to structure the intonation content of a textual unit so as to show which information is new or cannot be taken for granted.
   
2. 
   to determine the speech function of a phrase, that is to define its communicative type (a statement, a question, a command, an exclamation).
   
3. 
   to convey connotational meaning of “attitude” such as surprise, annoyance, sympathy, indignation, enthusiasm, irony, sarcasm, etc., this can be rendered by means not only of lexical units but by grammatical structures as well, i.e.
   

I am →′glad with your ′progress ↑so \much.
This statement can possess some shade of irony with the help of intonation.

4.