hefoundhimselfinanunknownland,fromwhereheeventuallyreachedGreenland.为什么定语从句中fromwhere中from后面可以加where?为什么fromwhere不能换成fromwhich?

Question

he found himself in an unknown land,from where he eventually reached Greenland.
为什么定语从句中from where中from后面可以加where?为什么from where不能换成from which?

Answer 1

where这个关系副词一般在从句中作状语,但有时它也可以作介系词from的宾语,表示“从那里”,就出现了你所说的句子,意思是：“他发现自己在一片未知的土地上,从那里他终于到达了格陵兰.”格陵兰岛位于北美洲的东北部,在北冰洋和大西洋之间,全岛面积为217.56万平方公里,海岸线全长三万五千多公里,是世界上最大的岛屿.也可以把where看作代词,意思是“哪里,何处”的意思,不光是作关系副词引导定语从句,where作疑问词时也可以这么用,比如：
Where do you come from?
Where are you from?
He asked me where I came from.
He asked me where I was from.
希望我能帮助你解疑释惑.