Subject + 擦 + Complement
擦 (cā) means "to wipe," "to rub," or "to clean by wiping." It describes the physical action of moving a cloth or hand across a surface. It often takes a resultative complement like 干净 (gānjìng, "clean") to indicate the outcome of the wiping.
他用抹布把桌子擦得很干净。
Tā yòng mābù bǎ zhuōzi cā de hěn gānjìng.
He wiped the table very clean with a rag.
妈妈正在擦窗户,让屋子更亮一些。
Māma zhèngzài cā chuānghu, ràng wūzi gèng liàng yīxiē.
Mom is wiping the windows to make the room brighter.
吃完饭后我来擦桌子。
Chī wán fàn hòu wǒ lái cā zhuōzi.
I'll wipe the table after we finish eating.