Content words are subdivided into nouns, verbs, adjectives, numerals, quantifiers, pronouns and special content words, onomatopoeias and interjections. Function words are words that can't act as syntactic components alone, but have the grammatical meaning of connecting or attaching various content words.

Function words have no practical meaning, so they can't be used as sentence components and can't answer questions alone. (A few adverbs, such as "bu", "may" and "bu", can answer questions independently), and they can only make sentences with notional words to express various grammatical relations. Function words include adverbs, prepositions, conjunctions, auxiliary words and interjections.

function word

It is a word that cannot be used as a syntactic component alone, and it has the grammatical meaning of connecting or attaching various content words, including articles, prepositions, conjunctions, interjections and so on. When making a title, function words do not need to be capitalized if they are not at the beginning of the title.

There is not much practical significance, and it is impossible to independently undertake the sentence components in a sentence. Moreover, there is another important feature, that is, function words have no morphological changes:

Conjunction: Used to connect words, phrases or sentences. For example, and but before.

Interjections (..) express feelings such as joy, anger, sadness and joy. Such as: oh! Ah! Hmm.

Reference to the above content: Baidu Encyclopedia-Function Words