I find that it is difficult to do the work .句子正确吗?

题目

I find that it is difficult to do the work .句子正确吗?
和I found it difficult to answer the question.
句型都可以吗?

答案

I find that it is difficult to do the work.和
I found it difficult to answer the question.都可以说,前者that引导的是宾语从句,整个句子为复合句；后者it为形式宾语,difficult 为宾补,不定式to answer the question为真正的宾语,整个句子为简单句.