Some concepts: 冬ntonation unit音调单位：it usually corresponds to a sense group (or word group).(e.g.-Oh,do you know one? -Great!Let's go.) Elements in an intonation unit 冬 The pre-head调冠：any unstressed syllable or syllables that may precede the head-or the nucleus,if there is no head The head调头：the part of an intonation unit that extends from the first stressed syllable up to the nucleus The nucleus调核：the stressed syllable of the last content word in an intonation unit ÷The tail调尾：any syllable or syllables that may follow the nucleusSome concepts: ❖ Intonation unit 音调单位: it usually corresponds to a sense group (or word group) . (e.g. – Oh, / do you know one? - Great! Let’ s go.) ❖ Elements in an intonation unit ❖ The pre-head 调冠: any unstressed syllable or syllables that may precede the head - or the nucleus, if there is no head ❖ The head 调头: the part of an intonation unit that extends from the first stressed syllable up to the nucleus ❖ The nucleus调核: the stressed syllable of the last content word in an intonation unit ❖ The tail 调尾: any syllable or syllables that may follow the nucleus