floor怎么分词

第三人称单数：floors现在分词：flooring过去式：floored过去分词：floored。

例句：

There were papers lying around all over the floor.

地板上四处散乱着文件。

The floor of the car was covered in cigarette ends.

小轿车内底板上满是烟蒂。

This floor has been designated a no-smoking area.

这楼层已定为无烟区。