助词“た”可以说是构成日语的骨架,其时、体、语气三种职能相互独立又紧密相连。本文通过时、体以及语气三个方面的深层关联,试分析日语助动词“た”的三种职能作用,以为学习。 The auxiliary word “ta” can be said to form the skeleton of Japanese, and the three functions of body and tone are independent and closely connected with each other. This article attempts to analyze the three functions of Japanese auxiliary verb "ta in three aspects: in-depth, in-vivo and intonation.