Чтобы переделать предложения в косвенную речь, нужно изменить прямую речь так, чтобы она звучала как пересказ сказанного.
My sister said, "I enjoyed the performance."
- My sister said that she had enjoyed the performance.
John said, "I will go to the train station tomorrow."
- John said that he would go to the train station the next day.
Olga said to Jim, "I have read an article about your computer rules."
- Olga told Jim that she had read an article about his computer rules.
The teacher asked the boy, "Why are your hands so dirty?"
- The teacher asked the boy why his hands were so dirty.
The student said, "Do you agree with this decision?"
- The student asked if I agreed with that decision.
В косвенной речи изменяются местоимения, время и указания на время/место, чтобы они соответствовали контексту.