Historical linguistics is the subfield of linguistics that studies language change. Historical linguistics are concerned with the historical development of languages and the processes involved in language change. Historical linguistics look into the nature of language change and the causes that lead to language change.
本题考查历史语言学的研究内容。
历史语言学是语言学研究语言变化的一个分支领域。历史语言学关注语言的历史发展和语言变化所涉及的过程，历史语言学考察语言变化的本质和导致语言变化的原因。
