"I am sure.He will sell his house"改换成间接引用怎么说?

I am sure that he will sell his house抱歉啊，或许我接下来提的问题有点弱智。“I am sure”也是引号中的内容啊，所以我觉得应该和这句话不应该这么处理，但是又没说这一整句话到底是谁说的，所以我有点confused，也许这个疑问有点白痴，但是你能说得更清楚些让我彻底弄懂吗？题目错了 引号在he前题目没错，所以我才觉得疑惑I say:"He will sell his house."改成 I say that he will sell his house.这是改间接引语"I am sure.He will sell his house"改成 I am sure that he will sell his house 不是改间接引语 这是改成宾语从句形式