直接引语变为间接引语时将来时态的变化

问题描述:

直接引语变为间接引语时将来时态的变化
请问He said,“I am going to have a birthday party the next week.”怎样变为间接引语
顺便问一下别的将来时态的间接引语变换是否与此相同

He said he was going to have a birthday party the next week.
间接引语中从句的时态要依从于主句的时态.
当从句表达的是真理定理等事实时,时态不改变.