一般认为格助词“から”来源于名词,奈良朝是它从名词到助词的过渡时期,平安朝以后完全作为助词使用了。作为格助词,在奈良朝“から”表示原因、理由和经由地点,进入平安朝以后才有表现动作的起点等用法。作为接续助词的是从镰仓时期开始出现的, It is generally believed that the lattice auxiliary word “か ら” derives from the noun. Nara Dynasty was the transitional period from nouns to auxiliary words, and was used afterwards as a full complement. As a lattice auxiliary, in Nara toward “ka ra ” said the reason, reason and via location, into the peace after the beginning of the performance of the action and other usage. As a continuation of the auxiliary word from Kamakura period began to appear,