同义并列双音词的构词语素在语义上相近或相似,但在表意功能方面存在很多差异。本文以“愉快”、“背叛”为例,通过对语素“快”、“背”历时的语素义发展情况和共时的语素构词能力分析,发现由于在同一汉字下记录多个语素,同形语素的表意受到同形单音词的影响,在双音词的表意功能不显明。 The morphemes morphemes of synonym disyllabic disyllabic words are similar or similar in semantics, but there are many differences in ideographic functions. This paper takes “happy ” and “betrayal ” as an example. By analyzing the development of the morpheme meaning of morpheme “fast ” and "back Chinese characters record multiple morphemes, homophones of the ideograms by the same monophthonic words in the diacritical meaning of the word is not obvious.