后边加to,例如:1、It's pathetic that grown men have to resort to violence like this.成年人还得这样诉诸暴力,真可悲。2、They felt obliged to resort to violence.他们觉得有必要诉诸暴力。3、Why do they always have to resort to violence?为什么他们总是非要诉诸暴力不可呢