据说是的英文：
be said to be

参考例句：

Despite his looks he's said to be something of a Don Juan.
尽管他其貌不扬, 但据说是个很得女人欢心的风流荡子。

`She's leaving.' `So it seems', ie People say so.
｀她要走了.＇｀据说是这样.＇

This comedy has been attributed to Shakespeare.
这个喜剧据说是莎士比亚所作。

The accident was allegedly due to negligence.
这场事故据说是由于疏忽造成的。

Even more reassuring are said to be the positive signs of growth in the American economy
更使人宽心的，据说是美国经济中积极的增长信号。

He is said to have invented the sport of celebrity-watching.
据说是他发明了观赏名人这项活动。

The alleged collusion is reported to have begun in February, 2002, and continued until a few weeks ago.
被声称的”勾结“据说是始于2002年2月，并一直持续到数州之前。

In White-Jacket he wrote what purported to be an account of his experiences aboard the American warship United States
在《白外衣》里，他写的据说是他在美国战船“美国号”上的经历。

said是什么意思：
v. [say]的过去式和过去分词
adj. 上述的

What she said figures.
她说得有道理。

And He said to them,
路9:3对他们说、路的时候、要带拐杖、口袋、要带食物、银子、不要带两件褂子。

They finaly said yes.
他们最后同意了。

But Miss Sullivan said no again,
但是沙利文小姐又一次否定了我的回答。