日语中有一类特殊的名词叫形式名词,形式名词中除“の”以外,其他的词都由实义名词转化而来,它们部分或完全失去了本身的意义,仅有形式上的意义,在句子中起一定的修辞造句的语法功能。在日语语法教学过程中,形式名词“こと”、“もの”和“の”的用法最为抽象,其意义和用法较多而且复杂,大部分学生在实际应用中经常出错。本文将通过对意义和用法进行辨析,以掌握其三者之间的异同。一、“こと”和“の”使用言和句子名词化的功能 There is a special class of nouns in Japanese that are formal nouns. In addition to “no ” in other forms of nouns, all the other words are transformed from real nouns, and they have lost their own meaning in whole or in part and have only formal meaning , In the sentence plays a certain grammatical function of rhetorical sentences. In the process of teaching Japanese grammar, the usage of the formal nouns such as “こ と”, “も の” and “の” is the most abstract, and its meaning and usage are more and more complex. Most students often make mistakes in their practical application. This article will analyze the meaning and usage to grasp the similarities and differences between the three. First, “こ と ” and “の ” use words and sentence nominalization function