羊台山广场 完工:had been done与had done是什么结构 他们的用法是什么

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had been done 是过去完成被动时态
had done 是过去完成时态,表示过去某时间前已经发生的动作或情况，这个过去的时间可以用by，before等介词短语或一个时间状语从句来表示；或者表示一个动作在另一个过去动作之前已经完成。
we had just had our breakfast when peter came in
i had done sth=sth had been done by me
一般这两个时态有固定的时间状语做搭配的

关键还是要看上下文进行选择的

had been done 被完成了，被动语态,用于句子中有重大或重要的成分
had done 完成了...一般过去时，一些一般的句子，没有特殊意义

The most important task had been done by Joe.

he had done him homework

had been done与had done的区别，何时选前者，何时选后者？ had been done与had done是什么结构 他们的用法是什么 had+done 与have+done有什么区别? HAD BEEN TO They had done that before 请教had been 的用法 从句you had been gone have been与had been的区别？（谢瓜了） The bill he had long been opposed_____...... had been是怎么用的?谢谢!