The ministry of higher and secondary special education of the republic of uzbekistan

the pre-head.
The first stressed syllable up to the last stressed syllable is called either 
the head
or a 
scale. 
As for the last stressed syllable it may either be called 
the nucleus
or a 
tone.
Graphically these intonation parts can be shown as following: 

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62 
It was a 'very 'sunny 
ˎ
day yesterday. 
 
the head (scale)
 
the tail

 
…
¯
˙
─ 
 ·

…
 
 the pre-head
the nucleus (tone)
The rises and falls that take place in the nucleus or start with it are called 
nuclear tones. 
The nucleus 
is the most important part of the intonation pattern as it defines the 
communicative type of the sentence, determines the semantic value of the intonation group, 
indicates the communicative center of the intonation group or of the whole sentence. 
The communicative center
is associated with the most important word or words of the 
intonation group or of the sentence. 
The nuclear tone of the final intonation group is determined by the communicative type 
of the whole sentence. 
The communicative types of sentences are differentiated in speech according to the aim 
of the utterance from the point of view of communication, i.e. in order to show if the 
sentence expresses a statement of fact, a question, a command or an exclamation. 
There are four communicative types of sentences: 
1.
 
Intonation of the Declarative sentences (statements) 
A declarative sentence states a fact in the affirmative or negative form. In a declarative 
sentence the subject precedes the predicate. It is generally pronounced with a falling 
intonation.
 
I like music.