As is known to everyone, the moon travels round the earth once every moth.
实在搞不明白,as既然是代替逗号后面的内容,那么他不就跟 It is know to everyone that ...完全一样了吗?为什么还称他是非限制定语?
前面有网友提问关于 as if 后接不定式和现在分词的区别与用法问题,见:http://ask.yygrammar.com/q-27760.html 我也有一个疑难问题:as if 后面可以接名词吗?如:He acts as if (he was) the boss here.这里的 he was 可以省略吗?关于这个问题网上...