Bạn tham khảo!

1. "Are you watching TV now?" I asked Nam.

$\rightarrow$ $\text{I asked Nam if he was watching TV then}$

$\rightarrow$ $\text{Tôi đã hỏi Nam nếu anh ấy đang xem TV vào lúc đó}$

2. "How far is it from here to the market," They asked him.

$\rightarrow$ $\text{They asked him how far it was from there to the market.}$

$\rightarrow$ $\text{Họ hỏi anh ấy rằng khoảng cách bao xa từ đó đến siêu thị}$

3. "I am the first child in my family." she said

$\rightarrow$ $\text{She said that she was the first child in her family}$

$\rightarrow$ $\text{Cô ấy nói rằng cô ấy là con một trong gia đình mình}$

***Cấu trúc:

1) Reported speech cho yes-no question

$\text{S+asked+someone+if/whether+S+V(lùi thì)+O}$

2) Report speech cho wh-question

$\text{S+asked+someone+wh-+S+V(lùi thì)+O}$

3) Reported speech 

$\text{S+said(that)+S+Verb(lùi thì)+O}$