Prep64求解

bobo1990

Recently documented examples of neurogenesis, the production of new brain cells, include the brain growing in mice when placed in a stimulating environment or neurons increasing in canaries that learn new songs.

(D) the brain growth in mice when placed in a stimulating environment or the increase in canaries' neurons when they
(E) brain growth in mice that are placed in a stimulating environment or an increase in neurons in canaries that
答案是E。 解释说D中的when placed修饰了documented examples导致逻辑意思错误。  但是when placed 不是靠近mice的吗？修饰mice逻辑意思没错呀，而且还比E的定语从句简介。   这到底是为什么呢？

sonic623

Recently documented examples of neurogenesis, the production of new brain cells, include the brain growing in mice when placed in a stimulating environment or neurons increasing in canaries that learn new songs.

(D) the brain growth in mice when placed in a stimulating environment or the increase in canaries' neurons when they
(E) brain growth in mice that are placed in a stimulating environment or an increase in neurons in canaries that
答案是E。 解释说D中的when placed修饰了documented examples导致逻辑意思错误。  但是when placed 不是靠近mice的吗？修饰mice逻辑意思没错呀，而且还比E的定语从句简介。   这到底是为什么呢？

-- by 会员 bobo1990 (2010/9/13 13:34:29)

when S + V 是状语从句只能修饰谓语，因此只能往前修饰到include而无从修饰名词。
此外，when placed省略的主语必然是共用主要从句的主语，因此when placed in a stimulating environment的主语是Recently documented examples而不会是mice。