现在完成时的被动语态
问题描述：
现在完成时的被动语态
帮忙举个例子
主动被动都要哦
答
The experiment has been done successfully.这个实验做得很成功.Tom’s novel has not been published.汤姆的小说还没有被出版.1.主动句：He has repaired the machine for two hours.（他修理这台机器已有两小时了...