引导同位语从句的标示词belief（信念，信仰）, fact（事实）, hope（希望）, idea（主意，观点）, doubt（猜疑，质疑）, news（消息）, rumor（谣言）, conclusion（结论）, evidence（证据）, suggestion（意见）, problem（问题）, decision（决策）, discovery（重大发现）, explanation（借口，解释）, information（信息）, knowledge（知识，见闻）, order（命令，秩序）, law（法律）, opinion（观点）, truth（真相，事实）, promise（许诺，诺言）, report（报告）, thought（想法，主意，思想）, statement（声明，陈述）, rule（法规，制度）, possibility（可能性），theory（理论），assumption （假设，假想），charge（指责）非人称主语形式总结：It is hoped that希望，有人希望 It is assumed that假设，假定 It is claimed that据说，有人主张 It is believed that有人相信 It is reported that据报道 It is considered that人们认为，据估计It is said that 据说，有人说 It is supposed that据推测，人们推测 It has been announced that已经宣布 It is asserted that 有人主张 It is rumored that听说，谣传 It is noticed that有人指出，人们注意到It is suggested that 有人建议 It is reputed that人们认为 It is learned that据说，据闻It is demonstrated that据证实，已经证明 It is estimated that据估计，有人估计 It is pointed out that有人推荐，有人建议It is proposed that有人提出 It was told that有人曾说 It will be seen from that人们有时会问It was noted above that前面已经指出 It is stressed that有人强调 It cannot be denied that无可否认It is sometimes asked that人们有时会问 It is felt that有人认识到 It is alleged that据说It is calculated that 据计算 It has been proved that已经证明 It has been found that人们已经发现It is still to be hoped that我们仍然希望 It will be said that 有人会说 It must been admitted that必须承认，老实说It has been illustrated that 据图示，据说明 It is universally accepted that人们普遍认为It was first intended that最初就有这样的想法 It is unanimously agreed that大家一致认同It is well-known that 众所周知，大家都知道It should be realized that我们应该意识到It can be said without exaggeration that可以毫不夸张的说