Question

it is said\report...that与sb is said \report..to的区别

两个句型转化之间有什么异同，主要是时态区别。

Answer 1

It is said that 的意思是据说，后面绝大多数情况是加一句俗语或谚语，或常识性的东西。表达这种意思的时候，It's said that是很自然而然一起脱口而出的。
sb is said to 意思是某人被说在干什么。

两者是不存在时态上的区别，但是在表达上，要区分清楚两者主语意思，一个是据说，一个是某人被说成。还有后者可以有多种表达方式：例如：
she is said to help her mother.据说她在帮她弟弟 一般时态
she is said to have finished her homework 据说他已经完成了作业 完成时态
she is said to be reading the books 据说她正在看书 进行时态

追问

两者时态如何转换呢？就是将It's said that与sb is said to相互转换，时态怎么变。最好多给几个例句。

追答

两句子转换的时候，时态是保持不变的。
一般现在时态转换：it is said that he is a good student.=He is said to be a good student.=People say that he is a good student.
一般过去时态转换：It is said that he slept late last ninght.=He is said to sleep late last night.
现在进行时态：It is said that she is reading books =she is said to be reading the books
现在完成时态：It is said that she have finished her homework ,=she is said to have finished her homework
当it is said that 句型中有is am are 的时候后面的就为 sb is said to be
当it is said that 句型中是动词时不管是不是过去式后面的sb is said to 只能接动词原形