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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,
这题正确答案选A,存在两个时态一个是由 over the past twenty years 引导的现在完成时,一个是由now引导的现在时,所以出现了时间断层,doing不能表示伴随,又不能表示整句话的结果,所以doing形式只能做修饰。
根据以前做到的题,如果选D的话,drawing 修饰的是逻辑主语,也就是本句的主语neuroscientists,我不觉得有什么问题。一定要说错的话,只能说是接近adulthood 这个名词,产生了歧义。
我的问题是如果这句话是这样的:
Neuroscientists, now drawing solid conclusions about how the human brain grows and how babies acquire language,have amassed a wealth of knowledge over the past twenty years about the brain and its development from birth to adulthood。
那么是不是对的呢?
再引申一个问题:
主句,修饰语,doing
当修饰语最后有名词紧贴着doing,此处的doing的修饰对象指代不明?
排除上述情况,doing永远修饰句子主语?
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