When heated,the coal gives off heavy smoke,__it difficult for people to breathe.When heated,the coal gives off heavy smoke,______it difficult for people to breathe.A.makes B.to make C.making D.having madeC请问为什么用ing,这句话如何翻译,填空的地方是什么成分为什么不能用A。makes
问题描述：
When heated,the coal gives off heavy smoke,__it difficult for people to breathe.
When heated,the coal gives off heavy smoke,______it difficult for people to breathe.
A.makes B.to make C.making D.having made
C
请问为什么用ing,这句话如何翻译,填空的地方是什么成分
为什么不能用A。makes
答
碳被加热会释放浓烟，这使得人们难以呼吸。ing应该做结果状语成分吧。
答
你好!
这是非谓语动词作状语,表示主动的用法