16. Lan asked me what I thought about language learning

17. The man asked her where she was from

18. The teacher asked his students to write these sentences

19. He asked them why they came home late

20. Peter said that he enjoyed looking at himself in the mirror

*Statement:

S + said + (that) + S + V

S + said + to + O + (that) + S + V

S + told + O + (that) + S + V

*Yes - No question: S + asked + (O) + if/ whether + S + V

*Wh - question: S asked + (O) + question word + S + V

*Commands: S + told/ asked + O + (not) + to V

*Requests: S + asked + O + to V

*Advice: S + advised + O + (not) + to V

                S + advised + that + S + should +  V

=>
16. Lan asked me what I thought about language learning.
17. The man asked her where she was from.
18. The teacher told his student to write those sentences.
19. He asked them why they came home late.
20. Peter said that he enjoyed looking at himself in the mirror.
Câu tường thuật dạng WH-questions : asked sb + từ để hỏi + S V(lùi thì)
Câu tường thuật dạng Yes/No questions : asked sb if S V(lùi thì)
Câu tường thuật -> lùi thì
HTĐ > QKĐ
told sb to V : bảo ai làm gì