OG16 51题

metina7

Neuroscientists, having amassed a wealth of knowledge over the past twenty years
about the brain and its development from birth to adulthood, are now drawing
solid conclusions about how the human brain grows and how babies acquire
language.
(A) Neuroscientists, having amassed a wealth of knowledge over the past
twenty years about the brain and its development from birth to adulthood,
are
(B) Neuroscientists, having amassed a wealth of knowledge about the brain
and its development from birth to adulthood over the past twenty years, and
are
(C) Neuroscientists amassing a wealth of knowledge about the brain and its
development from birth to adulthood over the past twenty years, and are
(D) Neuroscientists have amassed a wealth of knowledge over the past
twenty years about the brain and its development from birth to adulthood,
(E) Neuroscientists have amassed, over the past twenty years, a wealth of
knowledge about the brain and its development from birth to adulthood,

求教 这题为什么不能选D呢？


正确答案是A

我要喝可乐

D里面，后面drawing就会变成一个修饰语。分词修饰语要修饰前面主句里的主语，需要满足两个条件。
1）要修饰最近的先行句里的主语。
2）需要传达与主句的关系要么是马上的结果，要么就是同时的动作，或者说是次要的动作。

整个句子意思想表达的是神经科学家过去积累了什么什么经验，现在弄出一个结论。重点在后面，are drawing应该是个main verb。