定语从句引导词from where 的用法

from where 引导的定语从句
1、Soon after getting off his horse,the captain appeared at the second storey windows,from where he could see nothing but trees.下马不久,上尉就出现在二楼的窗口了.他从那里除了树木什么也没看到.(引导定语从句)
划线部分相当于…,and from at the windows…不可变为from which…,可用where,但不如用from where更具体.
2、She climbed up to the top of the hill,from where she could have a good view of the whole town.她登上山顶,从那里她可以一览全城风光.（引导定语从句）
划线部分相当于…,and from on the top of the hill或from on the top of which…,不可变为from which,也可直接用where引导,但语义较为含糊,不如用from where更加生动、形象、具体.
3、We went up to the roof ,from where we had a good view of the procession.我们爬到屋顶,在那儿我们可以一览整个行进队伍.（引导定语从句）
划线部分可理解为and from on the top of the roof或from on the top of which,用from which是不对的,直接用where仍显不具体,不形象.
4、China is the birth place of kites,from where kiteflying spread to Japan,Korea,Thailand and India.中国是风筝的故乡,在那里风筝传到日本、朝鲜、泰国和印度.
这里from正与下文的spread to构成一个整体,可理解为from near/around this place,如若把from where换为where显然是讲不通的,改成from which,能够讲得通,但不太符合英语习惯.
5、The car stopped suddenly only a few inches from where I stood.那辆小汽车就在我站的地方仅几英寸处忽然停下了.（引导状语从句）这里的划线部分中where引导的是宾语从句,与from一起作地点状语从句.