had been 在这里的成分是?不会是完成时的被动语态吧?

问题描述:

had been 在这里的成分是?不会是完成时的被动语态吧?
We would then convert what had been creative inspiration
into something we understood technically.

had been 在这里是动词be的 过去完成时 作宾语从句中的系动词 不是完成时的被动语态