部(へ)屋(や) heyaの no隅(すみ) sumiに ni本(ほん) honが gaきちんと kichinto積(つ)み()重(かさ)ね()ら()れ()て()い()た() tsumikasanerareteita。 Books were neatly stacked in the corner of the room. Literal Room's corner [in-に] books [subject-が] neatly stacked was. 積み重ねる is a compound verb (積む + 重ねる). The passive-resultative ~られていた describes the state of the books having been stacked. homedescriptioncompound verbpassive voice (~れる/~られる)~ていた (past progressive/state)
部(へ)屋(や) heyaの no隅(すみ) sumiに ni本(ほん) honが gaきちんと kichinto積(つ)み()重(かさ)ね()ら()れ()て()い()た() tsumikasanerareteita。 Books were neatly stacked in the corner of the room. Literal Room's corner [in-に] books [subject-が] neatly stacked was. 積み重ねる is a compound verb (積む + 重ねる). The passive-resultative ~られていた describes the state of the books having been stacked. homedescriptioncompound verbpassive voice (~れる/~られる)~ていた (past progressive/state)