三种。
1、As everyone knows
读音:英 [æz ˈevriwʌn nəʊz]，美 [æz ˈevriwʌn noʊz]。
意思:众所周知。
例句:The churches, as everyone knows, opposed the abolition of slavery as long as they dared.众所周知，教会过去尽量反对废除奴隶制。
2、as is known to all
读音:英 [æz ɪz nəʊn tu ɔːl]，美 [æz ɪz noʊn tu ɔːl]。
意思:众所周知。
词语用法:定语从句;置于句首。
3、be universally known
意思:举世闻名。
扩展资料:
As everyone knows其中as的用法:
as引导非限制性定语从句，指代整个主句内容，从句可置于句首，句中或句尾 。
例句:
As everyone knows ,China is a beautiful country with a long history .
每个人都知道，中国是一个有着悠久历史的美丽国家。
know的一些组词:
1、before you know where you are
意思:瞬息之间；转眼间；一下子
例句:
We were whisked off in a taxi before we knew where we were.
还没等我们弄清怎么回事，出租车就一阵风似地把我们带走了。
2、be not to know
意思:无从知道，并不知道（做错了事）
例句:
‘I'm sorry, I called when you were in bed.’ ‘Don't worry─you weren't to know.’
“对不起，你睡觉时打电话打扰你了。”“别在意——你不是故意的嘛。”
3、for all you know
意思:（强调不知道对自己无关紧要的事）不知道，说不定，亦未可知 。
例句:
he could be dead for all I know.
她说不定已经死了。