The ways to make waste water clean have been found by them.翻译
问题描述：
The ways to make waste water clean have been found by them.翻译
答
他们已经找到了废水净化的多种方法.帮我分析一下句子成分主语the ways 谓语 have ben foundby them 表示被动to make waste water clean是the ways的后置定语，也可以换成of making waste water cleanmake waste water clean是一个动词+宾语+宾补的结构