Depending on which role you choose, you could help to increase a community’s access to safe drinking water, or help to protect valuable local cultures.

网友这个问题涉及语法理论。也是很值得讨论的问题。

话题：在一个句子的某个成分中包含着一个从句；或者句子的某个成分本身由一个从句充当。那么问题来了，什么情况下才算复合句？例如：

I know his place.

I know where he lives. （宾语由名词性从句充当）

I know the place where he lives.（宾语中含有定语从句）

Knowing where he lived, I had no difficulty finding his house. （状语中含有名词性从句）

Knowing the place where he lived, I had no difficulty finding his house. （状语中含有定语从句）

就网友的句子而言，作状语的现在分词包含一个宾语从句（不是网友说的定语从句，which 是疑问限定词，不是关系代词）。后面是一个简单句。简单句前面是状语，这时，该怎样定义这个句子，是简单句还是复合句？