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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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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  • 袁圆 提出于 2021-12-06 16:15