write + (and…) + has been done and left that way
kaite aru
has been done and left that way (on purpose)
meaning: have been written
冷蔵庫にケーキが入れてあるから、食べていいよ。
reizouko ni keeki ga irete aru kara, tabete ii yo.
There's cake in the fridge for you — go ahead and have it. casual
会議の資料はもう印刷してある。
kaigi no shiryou wa mou insatsushite aru.
The materials for the meeting have been printed already. neutral