词的语法分类是汉语语法的老大难问题。近年语法学界对词类同题进行了新的探讨。笔者想从义位功能角度对词类问题进行一番探讨。何谓义位功能?指的是组合义句的基本单位——义位在句子中的作用。语义内容决定语法形式,义位功能决定词法功能,这就是本文探讨的依据。汉语是历史悠久的语言,汉语词的含义由于语言历史的悠久;发展得非常丰富。这种词义的丰富性就造成了义位功能的多样化,这种多样化的义位功能,参与句子的组合,就有作多种句子成分的可能。而所谓的词类是对语义高度抽象包含有多种必位的词的语法分类。传统语法“依句辨品”,把高度抽象的词与句子中借助词的形式只含有一个义位的同对应,就难免会得出“离句无品”的结论。我们认为 Grammatical classification of Chinese grammar is the crux of the problem. In recent years, grammar scholars have made new discussions on the same type of words. I want to explore the part of speech from the perspective of etiquette function. What is the function of sememe? It refers to the basic unit of sememe sentence - the role of sememe in the sentence. The semantic content decides the grammatical form, the sememe function determines the lexical function, which is the basis of this article. Chinese is a long-established language. The meaning of Chinese words is very rich due to the long history of languages. The richness of such semantic meaning causes the diversification of sememe functions. This diversified sememe function may participate in the combination of sentences and may have a variety of sentence elements. The so-called part-of-speech is a highly abstract semantic syntax contains a variety of must-have words classification. The traditional grammar of “according to the sentence identified goods”, the highly abstract words and sentences in the form of the word contains only a synonym for meaning, it will inevitably lead to “no sentence from the sentence” conclusion. We believe