标题: ＯＧ－１２ ２１ Ｄ选项为什么错呢 [打印本页] 作者: 浅浅123 时间: 2012-2-4 11:06 标题: ＯＧ－１２ ２１ Ｄ选项为什么错呢 21. 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, OG中对D的解释是the final descriptor in prensent tense,now drawing conclusions....does not fit the opening clause ,which is in present-perfect tense and seem to modify adulthood. 这里 drawing conclusions做伴随状语难道不可以的吗？在别的语法书上看到ing分词在句尾应该应该优先理解为状语，看到OG上的解释又有点模糊了的。作者: 浅浅123 时间: 2012-2-4 13:37
好像有点明白了的Ｄ选项中ｄｒａｗｉｎｇ如果要做状语的话是伴随状语，但时间标志是ｎｏｗ所以无法做伴随状语，状语不行那就考虑做定语修饰ａｄｕｌｔｈｏｏｄ的情况很明显改变了原来句子的意思作者: babybearmm 时间: 2012-2-4 14:40
看看这个吧，看stacey的详细解释，她是Manhattan Instructor http://www.beatthegmat.com/ing-modifier-three-different-versions-in-og-t38943.html 挺长的，不过你看那么两三页基本就可以明白一大类问题作者: alandiyer 时间: 2012-2-4 21:19
DE改变句子意思了吧。作者: Royzhang0929 时间: 2012-2-12 22:42
DE 官方解释是attach a present-tense descriptor to a present-perfect clause. 就是说不能用现在时态的分词修饰过去时态的verb。