We often see her dance in the room .为什么第三人称单数her后dance不用加s?
问题描述：
We often see her dance in the room .为什么第三人称单数her后dance不用加s?
答
因为有感官动词"see",感官动词后接动词原形或动词-ing,
即：see sb.do/doing sth.（看见某人做/正在做……）