如果你看见房子很脏，你可以说：

"The house is dirty."

这是一个普通的英语表达，来自英语的基本词汇。

下面是一些更具体的例句：

"The floors are covered in dirt and dust."

(地板上有满是灰尘和土壤。)

"The windows are so smudged, I can barely see through them."

(窗户污迹斑斑，几乎看不清。)

"There are cobwebs in every corner of the room."

(房间的每个角落里都有蜘蛛网。)

希望这些例句对你有帮助。