求助for doing和to do的区别

一起从头开始

Geologists have found that streams in the Karoo basin of South Africa changed suddenly at the end of the Permian period 250 million years ago, from the meandering shape typically found in well-vegitated zones to the braided pattern found in areas without deep-rooted vegetation to hold the soil together.

(A) from the meandering shape typically found in well-vegetated zones to the braided pattern found in areas without deep-rooted vegetation to hold
(B) from the meandering shape typically found in well-vegetated zones to the braided pattern that they find in areas without deep-rooted vegetation for holding
(C) from the meandering shape typical in well-vegetated zones to the braided pattern found in areas where it is without deep-rooted vegetation for holding
(D) shifting from the meandering shape typically found in well-vegetated zones to the braided pattern found in areas where it is without deep-rooted vegetation for holding

(E) shifting from the meandering shape that is typical in well-vegetated zones to the braided pattern being found in areas without deep-rooted vegetation to hold

答案选A,官方解释说(B)的for holding is awkward and indirect.

请问for doing 和 to do 有什么区别? 查了很多网站, 有人提到 for doing 表示sole purpose.

cathyhu1995

我记得for 表示原因，有表示为了。。。。的说法，一般来讲肯定是动词比动名词好，所以肯定跟to do表示目的更加合理

dreamDC

我认为真正的原因是因为B选项的they find in areas。一是不平行，二是用一般现代不合适。