本研究主要利用熵（entropy）與冗餘性（redundancy）的兩項指標，探討以中文為母語的日語學習者與日語母語話者在會話中使用連接詞與連接助詞的差異。本研究先從中級學習者、高級學習者與日語母語話者在會話中使用連接詞與連接助詞的種類與詞頻計算出熵與冗餘性的數值，之後再就其數值進行統計處理。其主要結果如下：中級學習者在會話中有頻繁使用連接詞｢demo｣的傾向，而所使用的連接助詞的種類較為單調。此外，連接助詞｢kara｣與｢node｣的區別也似乎尚未習得。相較之下，高級學習者在會話中所使用的連接詞的種類相當多樣，然而實際的使用狀況仍與母語話者有所差異。除了存在多用連接詞｢demo｣、｢dakara｣、｢tatoeba｣、｢soshite｣的問題之外，所使用的連接助詞的種類豐富性也不如母語話者。另外也存在無法適切使用連接助詞｢kara｣與｢node｣的問題。

The main purpose of this study was t o explore the differences in the usage of connectives and connective particles in conversations between Japanese learners whose first languageis Chinese and native Japanese speakers based on two indexes,entropy and redundancy. The main result are summarized below: Intermediate level learners tended to frequently use the connective' demo'in their conversations.And they used rather fewer types of connective particles.In comparison, advanced level learners used various types of connectives in their conversations.Yet,their usage was still different from native Japanese speakers'. They had the problem of using connectives'demo','dakara','tatoeba',and'so shite',and the variety of the types of connective particles they used was no tashig has native Japanese speakers.Further more,they could not use the connective particles' kara'and' node' properly.