人类语言的历史

History of human language

History is past events. Human language is composed of spoken language, written language and sigh language. Because the first sound recorder was invented less than two hundred years ago, studying the spoken language of or before that time is impossible. Therefore, the language family and group are about modern spoken languages, but about written language, and the history of language is not the history of spoken language, but the history of written language.
Some linguists who study the voice of the ancients spoke are based on the rhyme of ancient written language, especially the poetry. That is a speculation, not the actual voice of the ancients.

人类语言的历史

历史是谈过去的事情。人类语言由口语，书面语，和手语组成。由于第一台录音机发明还不到二百年，研究这之前的口语是不可能的。因此，语言学里的语系，语族，语支，都不是现代口语的分类，而是书面语的分类。语言的历史也不是口语的历史，而是书面语言，也就是文字的历史。
有些语言学家研究古人说话的声音，那是根据古文，尤其是古诗的韵的一种猜测。古人实际说话的声音，或许我们永远都不可能知道。