求语言学morpheme and phoneme ,allophone,allomorph 的正确定义
问题描述：
求语言学morpheme and phoneme ,allophone,allomorph 的正确定义
答
Morpheme is the s smallest unit in term of expression and content,it is can not be further divided into smaller unit without destorying its meaning or dramatically altering the meaning .
Phoneme is the smallest uint of phonology.
Allophone is the variant of phones,they must bear some phonetic resemblelance.