求拯救一道题啊！！！OG13 25题~~

冲头君

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,

答案是A
看了很多帖子 都说D选项改变了句子重心什么的 这点俺不是很明白呢 求解
以及 OG上的解释 D，说now drawing conclusions....does not fit the opening clause 怎么错呢？那应该要咋样？
还有and seems to modify adulthood 看到prep语法笔记上不是说 逗号后面 分词做状语 不是要修饰相邻句子的主语吗 为什么会看上去修饰adulthood呢？
百思不得其解 求大神相助啊！！！！感谢！！！！！！！！！！！

冲头君

木有人吗TT

冲头君

求助啊啊啊自己顶了先~~~~~TT

boalgmat

首先明确 V-ing的三种用法：1：伴随状语 句子末尾 逗号隔开  2：主系表句子中  句子末尾 逗号隔开 修饰整个句子  3：句子末尾 逗号隔开 可以作为定语     1：伴随状语 不可能 动作要同时发生 但文章 一个是 过去 一个是现在 所以不是伴随状语 2：主洗标 也不是  3：所以drawing可以做 adulthood的定语 也可以修饰主句主语  问题应该实在这里。语法原则不是绝对的

冲头君

boalgmat 发表于 2014-4-20 21:59
首先明确 V-ing的三种用法：1：伴随状语 句子末尾 逗号隔开  2：主系表句子中  句子末尾 逗号隔开 修饰整个 ...

大神你讲的太好了！！！！都明白了！！！谢谢你呢么么哒~~~=3=