本論文之研究對象為現代日語的「動詞未然形+しい」形式形容詞。研究的目的有二:(1)利用語料庫語言學和構詞學的研究方法,概觀「動詞未然形+しい」形式形容詞之使用狀況。(2)以「忙しい」為例,透過與派生原動詞「急ぐ」的比較,闡明「忙しい」的用法和語意。用法之探討以「忙しい」之前置成分和後置成分為主,語意分析則以連體修飾成分的「忙しい」基本形為主。期待本論文的研究成果能夠對日本語學研究和日語教育有所助益。 This paper examines the ''verb + shi-i'' form of adjectives in modern Japanese. The purpose of this study is twofold. (1) To overview adjectives with the form ''verb + shi-i'' by using corpus linguistics and word structure research methods. (2) To clarify the usage and meaning of ''Isogashii'' by taking it as an example and comparing it with the derived verb ''Isogu''. The usage will focus on the front and back conjunctive components, but the meaning will be analyzed for the adnominal modifiers. I hope that the results of this paper will be of help in Japanese linguistics research and Japanese language education.