don't run in the hallways and don't arrive late for class我认为

不是的,冠词 the 可以接单数或复数名词比如take good care of the booksthe buses are late todaydid you forget to bring the glasses?the hallways have been decorated with pictures of famous peoplehallways = 走廊希望帮到了你,我是加拿大人,前海外英语老师。