1. He asked the girl if she could play piano. 

2. Nga said that she was a new student. 

Nga told me she was a new student. 

3. Tung said to me that he wanted to buy that pen. 

Tung told me that he wanted to buy that pen. 

4. He said that he had to do many homework that night. 

5. She said that she would go to school the next day. 

6. She asked me what i was doing then. 

7. He asked me if i could help him. 

8. She asked Ba where she lived. 

9. Hanh said that she didn't like that book. 

10. Lan said that she had to go home then. 

11. My father asked if it was my hat. 

12. He asked that why i liked watching TV. 

13. Binh told Lan he couldn't help her that night. 

Binh said to Lan that he couldn't help her that night.

14. They said they had to do these work then. 

15. Hang asked me if i liked that pen. 

16. Lan said to Ba that she had to help her. 

17. He asked me where i would go the next day. 

18. Maryam said she was having a good time there. 

19. She asked me why i came there late. 

20. She said to Mai that she was leaving there for Hue the next day. 

21. He told me he couln't do that test. 

22. She said to me that she would go to China the next week.

1. He asked the girl if she could play the piano.

→ S + asked + O + if/wheter + S + V(lùi thì): câu tường thuật dạng câu hỏi Yes/No ( chuyển 'can' → 'could' )

2. Nga said that she was a new student.

→ S + said (that) + S + V(lùi thì) ( lùi thì HTĐ → QKĐ )

   Nga told me (that) she was a new student.

→ S + told + O (that) + S + V(lùi thì)

3. Tung said to me he wanted to but that pen.

    Tung told me that he wanted to buy that pen.

4. He said that he had to do many homework that night.

5. She said that she would go to school the following day.

6. She asked me what I was doing then.

7. He asked me if I could help him.

8. She asked Ba where he lived.

→ S + asked + O + Wh/H + S + V(lùi thì): câu tường thuật dạng câu hỏi Wh/H ( lùi thì HTĐ → QKĐ )

9. Hanh said that she didn't like that book.

10. Lan told Hoa that she had to go home then.

11. My father asked me if it was his hat.

12. He asked Hoa why she liked watching TV.

13. Binh told Lan he couldn't help her that night. 

     Binh said to Lan that he couldn't help her that night.

14. They said they had to do these work then. 

15. Hang asked me if I liked that pen. 

16. Lan said to Ba that he had to help her. 

17. He asked me where I would go the following day. 

18. Maryam said she was having a good time there. 

19. She asked me why I came there late. 

20. She said to Mai that she was leaving there for Hue the following day. 

21. He told me he couldn't do that test. 

22. She said to me that she would go to China the next week.