It's said that… 据说……
“lt's said that…”是“据说”的意思，类似的常用句型有“lt's believed that…”（一般人相信……）“lt's thought that…”（一般人认为……）“lt's expected that…”（一般人预料……）及“lt's known that…”（一般人都知道……）等。
模拟对话
爱情能否永恒
John: I can't believe Jessica broke up with Brian.Actually, it really shocked me.
约翰：我不敢相信洁西卡跟布莱恩分手了，事实上，这件事让我颇为震惊。
Lisa: Why? It's the norm these days.
莉莎：为什么？这种事很正常啊。
John: It was believed that they were getting married.
约翰：大家都相信他们会结婚。
Lisa: Oh, come on...Do you really believe that love can last forever?
莉莎：喔，拜托，你该不会真的相信爱情是永恒的吧？
John:Sure,it can!
约翰：当然，那是可能的！
在这段对话里，John想表达大家一般所相信的情况是Jessica将会跟Brian结婚，而他自己也是如此，因此对于他们分手的事情感到震惊。此时就可以使用“It is believed that…”的句型。