词和词类语言的三要素是语音、词汇和语法,语法是语言的构造规则,语法单位是有意义的语言单位,按从小到大的顺序,可分为语素(造词单位)、词和词组(造句单位)与句子(表达单位)。语素是最小的音义结合体,按照音节的多少,可分为单音节、双音节和多音节三类。由一个语素构成的词,叫单纯词。由两个或两个以上语素构成的词叫合成词。从词义上,词可分为单义词、多义词,同义词、反义词。单义词 The three elements of word and phrase language are speech, vocabulary and grammar. Grammar is the construction rule of language. Grammatical unit is a meaningful unit of language. It can be divided into morpheme (word making unit), word and phrase in descending order (Sentence unit) and the sentence (expression unit). Morpheme is the smallest combination of sound and meaning, according to the number of syllables, can be divided into monosyllabic, disyllable and polyphonic three categories. The words formed by a morpheme, called simple words. Words composed of two or more morphemes are called compound words. From the sense of the word, the word can be divided into single-meaning words, polysemy, synonyms, antonyms. Single word