同学你好，该知识点来自沪江网校《英语零基础直达大学六级全能畅学卡【现金奖励班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学好：
这句话表示：从海岸线向大海延伸数英里乃至数百英里的区域是缓和的大陆架斜坡。

From the shore line out to a distance (which may be anywhere) (from a few miles to a few hundred miles) runs the gentle slope (of the continental shelf) 本句话采用的是全倒装形式，即整个谓语部分置于主语之前的倒装。
正常的语序是 The gentle slope of the continental shelf runs from the shore line out to a distance (which may be anywhere) (from a few miles to a few hundred miles)；主语是The gentle slope，谓语动词是runs，
from the shore-line out to a distance 是介词短语作地点状语，of the continental shelf 是主语slope的后置定语，which may be anywhere 是定语从句，修饰前面的distance，from a few miles to a few hundred miles 修饰前面的anywhere的，做后置定语（这里anywhere作名词）。

祝学习愉快～