我试着说下我的看法吧
ing形式做修饰语的确是借鉴前面的时态,用来表示这个动作的发生和前面的动作在一个timeframe里。
但是这个句子有明确的时间指示词earlier in the same century,表明这两个动作不是发生在同一个timeframe里,所以用ing形式做修饰语矛盾。一个不太确切的例子。
21. Neuroscientists, having amassed a wealth of knowledge over the pasttwenty years about the brain and its development from birth to adulthood, are now drawing solid conclusions about how the human brain growsand 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) Neuroscientists amassing a wealth of knowledge about the brain and itsdevelopment from birth to adulthood over the past twenty years, and are (D) Neuroscientistshave amassed a wealth of knowledge over the past twenty years about the brainand its development from birth to adulthood, (E) Neuroscientistshave amassed, over the past twenty years, awealth of knowledge about the brain and its development from birth to adulthood,
d选项中,now drawing solid作为伴随状语修饰前面的have amassed这个动作,但是now这个时间指示词明确表明drawing这个动作和amass这个动作不在一个timeframe里,因此drawing无法进行伴随,也就说drawing向前借鉴时态会和now这个指示词矛盾。
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