关于where

来源：百度知道 编辑：UC知道 时间：2024/05/09 12:44:26
The problem of water pollution is frequently compounded( in certain areas where )the treatment and release of industrial wastes are not adequately regulated.
括号里不懂，为什么用where 不用which，简要讲一下！谢谢！

where the treatment and release of industrial wastes are not adequately regulated是定语从句,在这个定语从句中,where作地点状语=in which,指代 in certain areas .
在某些工业废物的处理和排放没有合理规划的地方频繁出现水污染问题.

in certain areas在某些地区
where 是 in certain areas 的同位语