一个奇怪句子的成分分析

问题描述

The types of molecules that can do this are themselves substantially hydrophobic in nature such as carbon dioxide, oxygen or ethanol.

疑问：这句话中 themselves 是做表语么？那么 substantially hydrophobic 又是什么成分？

老师答疑

刘老师：

本句中的themselves 是主语the types of molecules 的同位语。

oneself 作同位语时，可以放在与之同位关系的词之后，也可放在句末，也可放在be 之后。又如：

I am myself a graduate of this university. 我本人是这所大学的毕业生。

He who goes against the fashion is himself its slave. 反对时尚的人自己也是时尚的奴隶。