had been大部分是be动词的过去完成时态.不过也有可能就是用于虚拟句里.
改成疑问句：had it been a good day?
have been to不算固定搭,中文意译是曾经到过.你可以说I have been to Italy.就是我曾经去过意大利.是现在完成时态.