allowing的逻辑主语分析以及它与定语从句的转换

问题描述

At the same time these computers record which hours are busiest and which employers are the most efficient, allowing personnel and staffing assignments to be made accordingly . And they also identify preferred customers for promotional campaigns.

请问：句中的 allowing 的逻辑主语是？allowing 相当于 which allows，那 which 的先行词是不是和 allowing 的逻辑主语是同一个词？

老师答疑

刘老师：

1. 句中的 allowing 的逻辑主语是？

—— 是these computers。

2. allowing 相当于 which allows，那 which 的先行词是不是和 allowing 的逻辑主语是同一个词？

——本句的allowing 不可以变成 which allows，因为allowing...不是定语，而是结果状语，所以就不存在which allows。

3. 假如allowing 相当于 which allows，那 which 的先行词是不是和 allowing 的逻辑主语是同一个词？

——是的。