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Neuroscientists,having amassed a wealth of knowledge over the past twenty uears 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 同原句 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 knowlege 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 ,
我不明白的是OG对D的解释,"the final descriptor in present tense,now drawing conclusions...does not fit the opening clause,which is in present-perfect tense(have amassed a wealth...)and seems to modify adulthood",修饰adulthood这部分我明白,但是时态有什么不对吗,一个是对过去的阐述一个是对现在的阐述,并且过去对现在也产生影响了,那么一个用现在完成时一个用现在时很合理啊,为什么OG认为不合理? |
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