it is widely believed that... 意为“众所周知”，即被大多数人所相信认可的意思，所以后面的“by many people”重复了，应当省去！！！！it is widely believed that... 属于固定句型，类似的有：it is widely used / thought / known that
把第一个that去除。It is widely believed by many people for some time that ... 这是主语从句，全句主语为后面的“that ... ”，谓语为“is widely believed ”，为了使句子平衡，用it作为形式主语，把真正的主语放到后面。本回答被提问者采纳
第2个回答 2012-12-21
这个是it做形式主语，that从believe做真正主语。sth be believed by sb翻译为某人认为某事。for some time是时间状语。句子错在多了一个引导词that把第一个that去掉。求采纳
第3个回答 2012-12-21
It is widely believed that （这个that去掉） by many people for some time that ...
It is。。。that。。。是it引导的主语从句 ,固定句型。
第一个that多余，widely believed by sb.句式很正常，中间加个that 就不对了。被大家普遍认同的是。。。追问
我也这样认为，可似乎网上都是这样的，并且百度还能翻译
第4个回答 2012-12-21
前面的that要去掉 It is widely believed by many people for some time that ...