$1.$ Peter Jones asked me if he could tell the cashier he want his bill.

→ Ta không lùi thì khi mệnh đề chứa nội dung tường thuật có một số động từ khuyết thiếu như: could, would, might, should, ought

Công thức câu tường thuật với dạng nghi vấn yes/ no: (Vì là câu hỏi nghi vấn nên ta thêm if và whether)

S + asked/ wanted to know/ wondered + if/ whether + S + V + O.

$2.$ Her sister asked me to tell Mrs. Pritchard that she was leaving at two.

→ Công thức câu tường thuật với câu mệnh lệnh: S + asked/ told/ ordered + sb to do smt.

Lùi thì ở thì HTTD sang QKTD

1. Peter Jones asked me if I could tell the cashier he wanted his bill

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

2. Her sister asked me to tell Mrs Pritchard that she was leaving at two

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

*Requests: S + asked + O + to V

*Lùi thì:

QKĐ → QKHT

HTĐ → QKĐ

HTHT → QKHT

HTTD → QKTD

QKTD → QKHTTD

will → would

can → could

may → might 

must → had to