现在完成时的被动语态结构是什么?

如题所述

现在完成时的被动语态结构是:have(has)been+过去分词。
例如,The tree has been cut down already.
That math problem has not been worked out yet.
Has your homework been finished today?
温馨提示:答案为网友推荐,仅供参考
相似回答