关于一个英语的小小的疑问
but the fact remains that the business you work for feels threatened enough to keep outsides away via these "Key," （摘自大学英语综合教程3） 这句话中for 后面的feels为什么不是feeling呢 因为for是介词了嘛 后面应该是动词的ing形式嘛 如果这句话没问题那么请在举个例子呢