上古来母字的意义可归纳为连续、重复、反复、多数以及条状、通灵等相近相通的特征,作为象声词则多表示声音的持续、重复、反复。意义特征与肖声功能的一致性显示了音与义的内在联系和引申规律,由此得到词源上的来母的表义表音功能。带有来母字较为凝固的双音词,为两个语素组成,其中来母音节也具有连续、反复等上述相关意义特征,证明这些词在更早时由一个主音节加一个表示持续意义或声音特征的从音节来母字组成:K-+l-=K-l-。这是一种以上古音义自然关系和发音节省原则为基础的、把单音节发展为双音节的词汇发展结构,在后代以至现代仍然具有生产新词的活力。语言中,叠音K-K-结构与K-l-结构都可以表示意义和声音的持续重复,两式可以交替;而记载语言的文字并未都能实现交替,导致叠音结构K-K-的次音节与K-l-结构次音节读音在同一字形上的交替,进而形成K-音节既有原声母又有来母的叠韵同义异读。从谐声系统看,K-l-中l-音节字的声符既有与喉牙唇音纠葛的,也有真正反映语音实际的纯来母的,说明文字的谐声系统并不能准确反映语言的语音系统。语言事实反映的来母的单纯与谐声系统表现的来母与其他声母交替的矛盾,说明文字上谐声的纠葛表象不能解释为语言中语音的实质是复辅音。 The meaning of the ancient to the mother tongue can be summarized as continuous, repeated, repeated, most and strip, psychic and other similar characteristics of the same, as the onomatopoeia is the voice of the continuous, repeated, repeated. The coincidence of the features of meaning and the functions of Xiao sound shows the intrinsic relationship between sound and righteousness and the law of extension, thus obtaining the phonological function of the ciphertext of the coming mother on etymology. The two-syllable words with the more solidified mother characters are composed of two morphemes, of which the mother syllables also have continuous and repetitive features of the above correlations, proving that the words were preceded by one syllable plus one to indicate sustained meaning or Sound features from the syllable to mother characters: K- + l- = Kl-. This is based on the above natural principles of phonetic and vocalization and the principle of pronunciation saving. The development of monosyllabic syllables as a two-syllable lexical structure still has the vitality of producing new words from the posterity to the present. Language, overlay KK-structure and Kl-structure can mean continuous meaning and sound repetition, the two can be alternating; and not all of the written language can be achieved alternately, resulting in overlapping structure KK-subsyllables and Kl - The structure of the second syllabic pronunciation in the same font on the alternating, and then the formation of K-syllable both original and mother have the same rhyme stack aloud. From the perspective of the harmonic system, the tone of K-l- in the l-syllable is not only entangled with the lip of the throat, but also reflects the actual pure mother of the speech, indicating that the harmonic system does not accurately reflect the speech system of the language. The contradictory between the mother and the other consonants alternated by the purely harmonious son system reflected in the language fact indicates that the appearance of the harmonic argument in the text can not be interpreted as that the essence of the voice in the language is the complex consonant.