请问: Luckily,we'd brought a road map without ____ we would have lost our way 答案:which为什么是定语从句,不是同位语?谢谢~

问题描述:

请问: Luckily,we'd brought a road map without ____ we would have lost our way 答案:which
为什么是定语从句,不是同位语?谢谢~