Be said to do和be said to be doing和be said to have done有什么区别

Be said to do和be said to be doing和be said to have done有什么区别
Be said to do和be said to be doing和be said to have done有什么区别

Be said to do和be said to be doing和be said to have done有什么区别
这三个都是被动短语,可翻译成“据说”,知识时态有区别而已.我各加一个主语造个简单的句子吧,这样有助于你的理解.
He is said to come.据说他会来
He is said to be coming,据说他正在来的路上.
He is said to have come,据说他来过了.

一个是据说要做，一个是据说正在做，最后一个是据说已经做了，所用时态不同

一个是据说要做，一个是据说正在做，最后一个是据说已经做了