In Present perfect^x, Nouns^x, Direct speech^x

Hi, When the reporting verb is simple present, present perfect, or future, the noun clause verb is not changed. I think this rule needs to explain 'changed from what'? Any tense that she uses in her direct speech? In other words, I think you have to look at the direct speech to...

Hi, When the reporting verb is simple present, present perfect, or future, the noun clause verb is not changed. I think this rule needs to explain 'changed from what'? Any tense that she uses in her direct speech? In other words, I think you have to look at the direct speech to...