Eg: She said. "I have lost a pen."
→She said she had lost a pen现在完成时——过去完成时
She said. "He will go to see his friend".
→She said he would go to see his friend一般将来时——过去将来时
"The earth moves around the sun and the moon moves around the earth, the teacher told me.
→ The teacher told me the earth moves around the sun and the moon moves around the earth。
Jack said. "John, where were you going when I met you in the street?"→Jack asked John
where he was going when he met him in the street。
Xiao Wang said. "I was born on April 2l, 1980。" →Xiao Wang said he was born on April 21,1980。
He said, "I get up at six every morning。" →He said he gets up at six every morning。
5.如果直接引语中的情态动词没有过去时的形式（例：ought to， had better, used to)和已经是过去时的形式时，（例：could, should, would, might）不再变。如：
Peter said. "You had better come here today。" →Peter said I had better go there that day。二、状语变化
直接引语变间接引语，状语变化有其内在规律，时间状语由"现在"改为"原来"（例：now变为then,yesterday变为 the day before，地点状语，尤其表示方向性的，或用指示代词修饰的状语，由"此"改为"彼"（例：this 改为that),
如：He said, "These books are mine." →He said those books were his
yesterday——the day before
yesterday morning——the morning before
the day before yesterday——two days before
tomorrow——the next/follow day
tomorrow evening——the next/follow evening
this week——that week
last week——the week before
1.直接引语如果是陈述句，间接引语应改为由that引导的宾语从句。如：She said, "Our bus will
arrive in five minutes."→She said that their bus would arrive in five minutes.
2.直接引语如果是反意疑问句，选择疑问句或一般疑问句，间接引语应改为由whether或if引导的宾语从句.如：He said, "Can you swim, John?" →He asked John if he could swim.
"You have finished the homework, haven't you?" my mother asked. →My mother asked me whether I had finished the homework.
"Do you go to school by bus or by bike?" he asked.→He asked me if I went to school by busor by bike.
She asked me, "When do they have their dinner?"→ She asked me when they had their dinner.
Eg: I don't know whom you should depend on.
4.直接引语如果是祈使句，间接引语应改为"tell(ask, order, beg等) sb (not) to do sth."句型。
如："Don't make any noise," she said to the children. →She told (ordered) the children not tomake any noise. "
Bring me a cup of tea, please," she said.→She asked him to bring her a cup of tea.
如：He said, "Let's go to the film." →He suggested going to the film.
或: He suggested that they should go to see the film.