a farm worker,who stayed up all night,claimed to have seen a figure cutting corn

题目

a farm worker,who stayed up all night,claimed to have seen a figure cutting corn
in the moonlight.请问cut为什么在这要加 ing,这是什么语法,

答案

SEE SB DOING STH 表示看见某人正在干某事,如果不加ING 表示一个完整的动作或过程,这里用CUTTING 更好,表示一个切玉米的状态