语法学界将句子功能和标句词都用“C”表示,将两者等同起来,造成了诸多问题。句子功能和标句词是两种不同性质的功能特征,两者出现的位置不同,其作用也存在差异。句子功能作为非线性特征,出现在独立的句子中,采用移位、添加标记、重叠等句法手段在句子的三个敏感位置得到体现,具有促使结构成句和标识句子性质的作用。标句词是一种有语音形式的语类,出现在小句中,作用是取消句子的独立性。两者的区分可以对汉语标句词问题进行合理解释。 The grammatical community uses the sentence “sentence” and the target phrase as “C”, which equates the two with each other, causing many problems. Sentence function and the target sentence are two different functional features, the two appear in different positions, its role is also different. As a non-linear feature, sentence function appears in an independent sentence, which is represented in three sensitive positions of sentence by means of shift, adding mark, overlap and other syntactic means. It has the function of making the sentence into a sentence and identifying the nature of the sentence. Sentence is a kind of phonetic form, appear in the clause, the role is to cancel the independence of the sentence. The distinction between the two can be a reasonable explanation of the Chinese phrasal question.