Read the message written by Mr Li and tell me what he asked me to do.为什么用written

问题描述:

Read the message written by Mr Li and tell me what he asked me to do.为什么用written

Read the message written by Mr Li
这里的written by Mr. Li 是用来修饰message的.
written by 是表由...写的, 用的是write的完成时,表示已经完成的状态.