It's just that I find science really defficult.是从句么?这是书上原文

It's just that I find science really defficult.是从句么?这是书上原文
It's just that I find science really defficult.是从句么?
这是书上原文

It's just that I find science really defficult.是从句么?这是书上原文
that引导的是表语从句,整个句子强调了that引导的内容.

这句话有问题，没有表语。
后面的从句可以做表语的从句。

that I find