普4---29

(Due to) the refraction of light rays, (this) is impossible for the naked eye to determine the exact location of a star close to the horizon.

this 改成 it, 没有问题.

但是在赖水信的语法上看到 due to 不能做介系, 只能是be due to . 应用owing to.

请教: due to 和 owing to 的区别和用法.

谢谢.

摘自金山词霸（看英文解释比较明白），这段话说明二者可以对等用，但是有人不同意，算不上错误，只能说不完美。

Due tohas been widely used for many years as a compound preposition like  owing to, but some critics have insisted that the adjectival status of  due must be retained. According to this view, it is incorrect to say  The concert was canceled due to the rain, as opposed to the acceptable  The cancellation of the concert was due to the rain, where  due continues to function as an adjective modifying  cancellation.

Due to已多年被广泛地当作象 owing to那样的复合介词使用，但批评者坚持认为应保持 due的形容词地位。按照这一观点，说 因为下雨，音乐会被取消了是不正确的，而应说 音乐会的取消是因为下雨，在后句中 due起形容词作用，修饰 cancellation