The classroom is very clean now.It___(clean) by us just now.请问一下这个空里面应该填cleaning还是cleaned啊?
问题描述：
The classroom is very clean now.It___(clean) by us just now.
请问一下这个空里面应该填cleaning还是cleaned啊?
答
was cleaned
答
首先 classroom是“被”打扫 所以是被动式
然后“just now ”过去式
所以添 was cleand
答
应该用cleaned,遵循时态一致原则
just now是个一般过去时的标志
答
应该用was cleaned 用过去式 而且是被动语态
答
was cleand 被动语态加过去时
答
has been cleaned