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题目
it is known to all that 和as is known to all that 区别

提问时间:2020-07-26

答案
都表示“众所周知”,但是用法不同
It is known to all that the earth is round.it是形式主语;that引导主语从句,是真正都主语
As is known to all,the earth is round.中间有逗号,as 引导从句,the earth is round是主句
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