されてきた

has/have been done; has/have traditionally been regarded or treated as; has/have developed over time

→ 為る

phrase Rare #35,666

has/have been done; has/have traditionally been regarded or treated as; has/have developed over time A combination of the passive form される (the passive form of する), てくる, and た. It describes an action, status, or change that has continued or developed over time up to the present. The exact interpretation depends on the preceding noun or verb.

JA: 犯罪はしばしば貧困と関連があるとされてきた。

EN: Crime has often been considered to be related to poverty.

彼との連絡が可能になり救出計画も具体化されてきた

We were able to get in touch with him, and the rescue plan has also begun to take concrete shape.

— オデッセイ (2015)

階級組織は長い間固定されてきた。

The class system has remained fixed for a long time.

アメリカの多くの州で死刑は廃止されてきた。

The death penalty has been abolished in many U.S. states.

この車は乱暴な使い方をされてきたに違いない。

This car must have been treated roughly.