what is well known is that China is becoming more and more influential in the world today.

这里有个主语从句和表语从句
what is well known主语从句,做主语
is系动词
that 引导表语从句
China is becoming more and more influential in the world today.表语从句
百度教育团队【海纳百川团】为您解答
以后有问题可以直接向我或【海纳百川团】提问哦～
请点击“选为满意答案”按钮,that 后面可不可以理解为宾语从句 还有第一个空可不可以填it？你好不能理解为宾语从句整个句子主干就是主系表结构这里是that引导表语从句第一空如果换成It,句子结构就要变了，后面也要去掉is,参考如下： It形式主语 is 系动词well known 表语that China is becoming more and more influential in the world today.真正主语 所以如果是选择题的话，就不能选it 百度教育团队【海纳百川团】为您解答以后有问题可以直接向我或【海纳百川团】提问哦～