She heard footsteps in the hall and then the man from the Electrictiy Board opened the door
问题描述：
She heard footsteps in the hall and then the man from the Electrictiy Board opened the door
这里的man后面的from是什么用法
答
She heard footsteps in the hall 她听到大厅里有脚步声
然后
the man from the Electrictiy Board 来自供电局的那个男人
（from the Electrictiy Board 限定前面的man,做定语.)
打开了门