people who live along this road receive their mail in these boxes
问题描述：
people who live along this road receive their mail in these boxes
这里along当什么讲谢谢!
答
along是介词,沿着.的意思,along this road是做句子的状语.
这句话的意思是 居住在这条路边缘的人们是通过这些邮箱来收信的.