Language is the most complex, systematic, and universal feature of the human species. The question of mastering a language and its method always draws a multitude of opinions from linguists and teachers.
夏威夷大學語言學博士、現任師大國語教學中心主任李振清指出，語言是人類最複雜、最有系統、應用得最廣的符號，人類自有語言以來，就有學語言的問題。