had been done 用于什么时态?
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![had been done 用于什么时态?](/uploads/image/z/8993808-0-8.jpg?t=had+been+done+%E7%94%A8%E4%BA%8E%E4%BB%80%E4%B9%88%E6%97%B6%E6%80%81%3F)
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had been done 用于什么时态?
had been done 用于什么时态?
had been done 用于什么时态?
过去完成时的被动态
过去完成时的被动态
同上
过去完成时的被动语态
过去完成时的被动词