相应的过去式.过去进行时、过去完成时、过去将来时等.
He said that he was reading a book when I came in.过去进行时,过去正在发生.
He said that he had finished his work when I came in.said的时候已经完成,过去完成时
He told me that he would go to the USA the next month.told的时候还没有发生,过去将来时.
很高兴为你解答!
多谢你的问题!