tree after tree went down,cut down by the water,which must have been three metres deep

题目

tree after tree went down,cut down by the water,which must have been three metres deep
cut down by the water,做什么成分?

答案

cut down by the water做"伴随状语",这个伴随状语的逻辑主语是tree after tree,所以cut在这里是“被动态“的
全句意思是：
大树被洪水连根拔起,一棵一棵地倒下了,洪水足足有3米深.