I had just finished my exam paper when the bell rang,announcing the class was over.announcing表
问题描述：
I had just finished my exam paper when the bell rang,announcing the class was over.announcing表
我不是被宣布吗?这里怎么可以用announcing?
答
这里announcing的主语是bell rang.
因此这句话还可以写成I had just finished my exam paper when the bell rang which announcing the class was over.
不知道对不对,