【正确答案】正确答案：Morphophoneme refers to the phoneme (or string of phonemes) that constitutes the various allomorphs of a morpheme. Relationship between phoneme and morphophoneme; Generally speaking, the concept of morphophoneme adds a grammatical meaning to the concept of phoneme. For example, as to the phoneme /s/, it is in fact a configuration of allomorphs of different morphemes, such as the plural morpheme and the 3rd person present simple morpheme. Therefore, we would regard this phoneme as a morphophoneme, represented as /s/.