They are reported 是据报道的意思,they是指发现油田的人,他们的事迹被报道,所以用被动.例如：report:报导;记述,描述[O2][O8][O9][+that]He was reported to have made an important discovery.据报导他有重要发现....是不是相当于it is reported ,另外这个句型通常接that，也有接to do 的用法吗？能举例吗？是的，It is reported that twenty men were killed in the clash. 据报导,在这次冲突中有二十人被打死。 Two passengers were reported (to be) seriously injured. 据报导有两位旅客受重伤。He was reported to the police for speeding. 他超速被人检举。