Diabetes, together with its serious complications, ranks as the nation's third leading cause of death, surpassed only by heart disease and cancer. 请问, surpass 为什么是过去分词, 过去分词可以做状语修饰主语吗? 我知道 现在分词可以用逗号隔开,做一个句子的伴随状语,或结果状语。但是过去分词用分词隔开放在句末, 我就不太懂了,这是什么知识点?