美國外語教師協會ACTFL針對外語教學提出了5C的指標，包括：Communication（溝通）、Cultures（文化）、Connections（貫連）、Comparisons（比較）、Communities（社區）。5C同時也是美國AP中文課程的依據。因此筆者希望能從美國21世紀的5C外語教育出發，討論華語文教學如何體現5C指標，並具體提出課程設計，最後探討5C對華語文教學所帶來的影響。

ACTFL (American Council on the Teaching of Foreign Languages) proposes 5C indexes for teaching foreign languages, including communication、cultures、 connections、comparisons、and communities. Theses indexes are also the basis of American AP Chinese courses. Hence, I want to discuss how courses of teaching Chinese as second languages can reflect 5C indexes, understand how 5C indexes have influences on teaching Chinese as second languages, and establish practical curriculums.