定语从句与主语从句As is known to all paper was first made in China.和It is known to all that paper was made in China.老师说这两句可以看出定语从句和主语从句的区别

问题描述:

定语从句与主语从句
As is known to all paper was first made in China.和It is known to all that paper was made in China.老师说这两句可以看出定语从句和主语从句的区别

It is known to all that paper was made in China. 此句中,it是形式主语
真正的主语是后面的that从句,即 paper was made in China.