. Tonality marks the beginning and the end of a tone-group. Tonicity marks the focal point of each tone-group. Tone is the third unit in Halliday's system. Tones can be primary and secondary. They convey the attitude of the speaker. Hallyday's theory is based on the syntactical function of intonation.founder of the American school of intonation K. Pike in his book "The Intonation of American English" considers "pitch phonemes" and "contours" to be the main units of intonation. He describes different contours and their meanings, but the word "meaning" stands apart from communicative function of intonation.is wide agreement among Russian linguists that on perception level intonation is a complex, a whole, formed by significant variations of pitch, loudness and tempo closely related. Some Russian linguists regard speech timbre as the fourth component of intonation. Neither its material form nor its linguistic function has been thoroughly described. Though speech timbre definitely conveys certain shades of attitudinal or emotional meaning there is no good reason to consider it alongside with the three prosodic components of intonation, i. e. pitch, loudness and tempo .. Sokolova and others write that the term prosody embraces the three prosodic components and substitutes the term intonation. It is widely used in linguistic literature, it causes no misunderstanding and, consequently, it is more adequate. They feel strongly that this term would be more suitable for their book too, but, unfortunately, it has not been accepted in the teaching process yet.foreign scholars (A. Gimson, R. Kingdon) restrict the formal definition of intonation to pitch movement alone, though occasionally allowing in variations of loudness as well. According to D. Crystal, the most important prosodic effects are those conveyed by the linguistic use of pitch movement, or melody. It is clearly not possible to restrict the term intonation by the pitch parameters only because generally all the three prosodic parameters function as a whole though in many cases the priority of the pitch parameter is quite evident.is no general agreement about either the number or the headings of the functions of intonation which can be illustrated by the difference in the approach to the subject by some prominent Russian phoneticians. T. M. Nikolayeva names three functions of intonation: delimitating, integrating and semantic. L. K. Tseplitis suggests the semantic, syntactic and stylistic functions the former being the primary and the two latter being the secondary functions. N. V. Cheremisina singles out the following main functions of intonation: communicative, distinctive (or phonological), delimitating, expressive, appellative, aesthetic, integrating. Other Russian and foreign phoneticians also display some difference in heading the linguistic functions of intonation .. Crystal distinguishes the following functions of intonation.function 's most obvio...
