【正文】
mic contrast : two phonetically similar sounds occur in the same environment and distinguish meaning,they form phonemic contrast.24. plementary distribution : allophones of the same phoneme and they don’t distinguish meaning but plement each other in distribution.25. minimal pair: two different forms are identical in every way except forone sound segment which occurs in the same position. 26. sequential rules: The rules to govern the bination of sounds in a particular language.27. assimilation rule: The rule assimilates one sound to another by copying a feature of a sequential phoneme, thus making the two phones similar.28. deletion rule: The rule that a sound is to be deleted although it is orthographically represented.29. suprasegmental features: The phonemic features that occur above the level of the segments(syllable, word, sentence),including stress tone intonation.(08F)30. tone: Tones are pitch variations, which are caused by the differing rates of vibration of the vocal cords.31. intonation: When pitch, stress and sound length are tied to the sentence rather than the word in isolation, they’re collectively known as intonation.32. nucleus: It refers to the major pitch change in an intonation unit.32. minimal set: sound binations which are identical in form except for the initial consonant together constitute a minimal set.