“it +be +过去分词+从句” 结构

1. It is said (reported, learned…) that …
该句型中的it 仍是形式主语，真正主语是 that 引导的主语从句。该结构常译为“ 据说（据报道，据悉……）”。
It is said that he has come to Beijing. 　　
It is reported that another man-made satellite has been put into orbit.
2. It is suggested ( ordered, required ... ) that ...
句型和上一个同属一个句型。主句中的过去分词是表示请求，建该议，命令等词时，that 后的从句要用虚拟语气（should + 动词原形），should 可以省。常译为“ 据建议；有命令……）”。
It is suggested that the meeting ( should ) be put off. 　
It was ordered that we ( should ) arrive there in two hours.

你说的“it +be +过去分词+从句”是主语从句.原先,是由宾语从句变来的:They say that he enjoys classic music(宾语从句)-----------（主语从句）：It is said that he enjoys classic music.分析：It （形式主语）i...