由原疑问词连接(如疑问代词是主语，不要改变语序)，例：

He asked, “Who will come to help us?”

→ He asked who would come to help them.

She said, “Where have you been， Simon?”

→ She asked Simon where he had been.

⑤ 选择疑问句

由 whether…or 引导，例：

Eddie said, “Is this a TV set or a computer?”

→ Eddie asked (me) whether that was a TV set or a computer.

⑥ 祈使句

用“tell /ask /order someone (not) to do something” 结构，将动词原形变为动词不定式，例：

“Put up your hands，” said the teacher.

→ The teacher told them to put up their hands.

“Don’t play football on the street，” the policeman said.

→ The policeman ordered us not to play football on the street.

2. 时态的变化

如主句的谓语动词是一般过去时，直接引语变间接引语时，从句的谓语动词在时态上要作相应变化：

直接引语 →  间接引语

一般现在时 → 一般过去时

现在进行时 → 过去进行时

现在完成时 → 过去完成时

一般过去时 → 过去完成时

过去完成时 → 过去完成时(不变)

一般将来时 → 过去将来时