英语-请问这里为什么用being?
问题描述：
英语-请问这里为什么用being?
-would you say the paper recycling scheme is working well?
-Definitely! Yes, I really think it's a great idea. And in fact,it's a good way of saving our resources,you know,saving trees being chopped down.
这里为什么是 being chopped down 为什么是being啊?这也不是现在进行时啊
答
句子要这样理解
And in fact,it's a good way of saving our resources,you know,（a good way of）saving trees (being chopped down).
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