该内容是考试会涉及到的知识点，北京张博士医考中心搜集整理，请参考。

　　例句：

　　Here,Darwinism seems to offer justification,for if all humans share common origins it seems reasonable to suppose that cultural diversity could also be traced to more constrained beginnings.

　　断句：

　　①Here,Darwinism seems to offer justification,

　　②for if all humans share common origins

　　③it seems reasonable to suppose

　　④that cultural diversity could also be traced to more constrained beginnings.

　　各部分结构：

　　①状语(Here,)+主语(Darwinism)+谓语(seems to offer)+宾语(justification,)

　　②原因状语连词(for)+内部条件状语从句(if all humans share common origins)

　　③原因状语从句：形式主语结构it seems reasonable to suppose

　　④真正的主语：that cultural diversity could also be traced to more constrained beginnings.

　　参考译文：

　　此处，达尔文主义似乎提供了合理的证明，因为如果所有人类共有相同的起源，那么似乎有理由认为文化多样性也能追溯到更有限的起源。

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