语言学家

I used to be a linguist till I become a writer.

去我是个语言学, 成了作。

He used to be a linguist till he turns writer.

他去是个语言学, 成了作。

"This well-known linguistic learned tribal languages in the field, not from books in the library."

"这位著名的语言学是在实地学会部落语言,而不是在图书馆的书籍上学会的。"

Historical linguists have to identify and classify families of related languages in a genealogical family tree, and to reconstruct the protolanguage.

历史语言学对各语系中相关语言进行甄别，勾画出族谱系图，从而重新构建语系的原始语。