thisskirtwasmadebymary.这里的bymary做什么成分？状语还是thisskirtwasmadebymary.这里的bymary做什么成分？状语还是宾语？

Question

this skirt was made by mary. 这里的by mary做什么成分？状语还是
this skirt was made by mary.
这里的by mary做什么成分？状语还是宾语？

Answer 1

介词短语作方式状语
by +主语在被动语态中作方式状语,表示动作执行的方式或对象.
引导方式状语的介词常用的有：by, in, like, on, over, through, with; by way of, by means of, etc.
例如：
They were chatting in a loud voice. 他们正在大声地聊天。
Did you come here by bus? 你们是坐公共汽车来的吗？
We learn swimming only by swimming. 我们只能通过游泳来学习游泳。
Though a third person I got the letter. 我是通过一个第三者才收到那封信的。
I learned French on/over the radio. 我是跟广播学法语的。
He went home with a heavy heart. 他带着沉重的心情回家的。