■过去分词表示一种被动关系，同时表示动作已经发生：http://yingyu.chazidian.com There is nothing written on it. 上面没写东西。 There were ten people killed in the accident. 事故中有10人丧生。 ■有时过去分词也可表示一种状态(可转换成被动结构)： There were some old men seated (=who were seated) in the back. 有些老人坐在后面。 There is a red car parked (=which is parked) outside the house. 房子外边停着一辆红色汽车。