第1个回答 2006-06-27
it is common knowledge that...
it is known by everyone that...
it is well-known that...
所有的都是宾语从句,第一个比较常用
第2个回答 2006-06-26
it is known to us all that
it is widely known that
it is common sense that
最后一个比较地道
第3个回答 2006-06-26
It is well-known that...
It's well-known that the Great Wall is world-famous.
第4个回答 2006-06-26
it is well-know that或it is common knowledge that
第5个回答 2006-06-26
it is known to all that...本回答被提问者采纳