as occurs on highways 这句话的主语是不是省略了

This thesis is concerned with a particular case of the above problem in which all toll arcs are connected and constitute a path, as occurs on highways.

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分类：句子成分

最佳答案 2021-12-07 22:38

这个as从句就是传统语法中所谓as引导的非限制性定语从句，as指代all toll arcs are connected and constitute a path这个分句的内容，并在从句中作主语。

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曹荣禄 -

擅长：动词用法,句法问题 | 采纳率 82% | 回答于 2021-12-07 20:13

as occurs on highways 这句话的主语是不是省略了

最佳答案 2021-12-07 22:38

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