其实, 最重要的不是他们的主语,而是他们后面的成分。 run out of 后面要有东西, run out of 什么。I ran out of the milk.run out 后面没有成分 The milk ran out. run out of 可以有宾语, 但是是介词宾语, 所以没有被动语态。 再例如:He goes out of the room. 怎么有被动语态? 其实有的人说The milk is run out. 严格说不对, 因为是不及物动词短语,不用被动态。再给你两个例子:Our supplies finally ran out. 我们的供给最终耗尽。We ran out of the insurance poli...