sb is said to do/ to have done / to be doing 中不定式的用法详解 与 例句

主要是时态的不同
she is said to help her brother.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

提供几个实例,请注意括号内的时态,相信您会领悟到：
1、Someone says that she( works) as an actress.
It is said that she works as an actress.
She is said to work as an actress.
2、People say that he( has finished) wriiting a novel.
It is said that he has finished wriiting a novel.
He is said to have finished wriiting a novel.
3、Tom says that Lilly ( is reading) in the sun.
It is said that Lilly is reading in the sun.
Lilly is said to be eading in the sun.