因为这其实是一个定语从句的省略形式,可以写成we wrote an article suggesting he was guilty
也可以是we wrote an article which suggests he was guilty
因为这里的article是主动的所以是ing,也就是说suggest这个动作时article做出的,相反如果是被动的就是ed形式.
例如：we work on a subject told by my instructor.
也就是说,我们在做一个由我们的导师告诉我们的课题,这里subject是被动,被告知的.