The criteria for classifying parts of speech in modern Chinese are: grammatical function, form and meaning of words, mainly grammatical function.

Grammatical functions of words:

1, the ability of words to act as syntactic components in sentences;

2. The combination ability of notional words and another kind of notional words;

3. The ability of function words to attach to real words and phrases.

Form of words:

1, which refers to the configuration; 2. configuration.

Meaning of words: here refers to the general meaning or meaning category of grammatically similar words.

Modern Chinese is not only a language, but also a discipline, which is divided into broad sense and narrow sense. Modern Chinese in a broad sense refers to the language used in modern Chinese, including not only the homophony of modern Chinese, but also all aspects of modern Chinese, while modern Chinese in a narrow sense only refers to the homophony of modern Chinese-Putonghua.

Reference to Modern Chinese-Baidu Encyclopedia: