现在完成时的被动语态结构：

肯定句：主语+have/has been + 过去分词
否定句：主语+ haven't/hasn't been+ 过去分词
一般疑问：Have/Has+主语+ been+过去分词
特殊疑问：特殊疑问词+一般疑问句


现在完成时的被动语态例句：
The report has been finished by Janet.
Janet已经完成了这份报告。
The mice have been caught by Ms Black.
老鼠已经被布莱克夫人抓到了。
The trees haven't been planted.
这些树木还没有被种植。
Has your room been cleaned?
你的房间已经被打扫了吗？
Have your dogs been put in the box?
你的狗被放进箱子里了吗？
Where has he been caught?
他是在哪里被抓的？

同时须搞懂的知识：
情态动词被动语态