现在分词的完成式having done不做后置定语的相关问题。

elvish126

啃PREP的时候看到了好几处写的“现在分词的完成式havingdone不做后置定语”但是又觉得这个题目违背了这个原则。
OG12-21
Neuroscientists, havingamassed a wealth of knowledge over the past twenty years about the brain andits development from birth to adulthood, are now drawing solid conclusions about how thehuman brain grows and how babies acquire language.
(A) Neuroscientists,having amassed a wealth of knowledge over the past twenty years about the brainand its development from birth to adulthood, are
(B) Neuroscientists,having amassed a wealth of knowledge about the brain and its development frombirth to adulthood over the past twenty years, and are
(C) Neuroscientistsamassing a wealth of knowledge about the brain and its development from birthto adulthood over the past twenty years, and are
(D) Neuroscientists haveamassed a wealth of knowledge over the past twenty years about the brain andits development from birth to adulthood,
(E) Neuroscientists haveamassed, over the past twenty years, a wealth of knowledge about the brain andits development from birth to adulthood,
havingamassed 这是不是修饰了 Neuroscientists做的后置定语吗？求大家帮我分析分析~答案A

stellapass

having done可以做非限定性修饰，不能做限定性修饰啊~having....在句子当中就是修饰N，符合prep讲的原则

sisichen666

having done在这里不是修饰主语N的，是用于修饰后面的谓语动词的，表示先于谓语动词，N已经做了。。。。。

DUKB24

nope

here the having done is modifying the subject neuroscientist


when u see the structure “s ，ving，vo”


you can move the ving before the subject


ving，svo


these two structures are same in meaning

cician

DUKB24 发表于 2012-9-10 08:24
nopehere the having done is modifying the subject neuroscientistwhen u see the structure “s ，ving ...

Thanks~~~~~~~