2017托福考试阅读长难句名师分析(17)

>>托福阅读：2017托福考试阅读长难句名师分析(17)

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托福阅读长难句：怀孕鱼龙群

But these factors do not account for the interesting question of how there came to be such a concentration of pregnant ichthyosaurs in a particular place very close to their time of giving birth.

(Of结构作定语：of how there came to be such a concentration of pregnant ichthyosaurs…)

翻译：但这些因素并不能解释这个有趣的问题：为何在一个特定的地点会如此集中地出现即将临产的怀孕鱼龙群。

分句1： But these factors do not account for the interesting question

分句2： of how there came to be such a concentration of pregnant ichthyosaurs in a particular place very close to their time of giving birth

分句1中嵌套着分句2.

分句2是of结构作后置定语修饰说明question的内容。

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