`I.`

`1.` He asked her if she liked coffee.

- Lùi thì của động từ: HTĐ -> QKĐ

`2.` He asked me if i was going to the cinema.

- Lùi thì của động từ: TLG -> TLG trong QK

`3.` Ba asked Lan if she could swim.

- Lùi thì của động từ khuyết thiếu: can -> could

`4.` Jack asked Linda if she had seen that film before.

- Lùi thì của động từ: HTHT -> QKHT

`=>` Câu tường thuật: Dạng Yes/ No questions: S + asked sb/ wondered/ wanted to know + if/ whether + S + V(lùi thì)

`II.` 

`1.` She asked John where he lived.

- Lùi thì của động từ: HTĐ -> QKĐ

`2.` She asked her boyfriend which dress he liked best.

- Lùi thì của động từ: HTĐ -> QKĐ

`=>` Câu tường thuật: Dạng WH-questions: S + asked sb/ wondered/ wanted to know + Wh-words + S + V(lùi thì)

Câu tường thuật - dạng Yes/No-questions 

S + asked / wanted to know / wondered + (O) +if/whether + S+ V (lùi thì)

Câu tường thuật - dạng Wh-questions 

S + asked / wanted to know / wondered + (O) +WH + S+ V (lùi thì)

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HTĐ ⇒ QKĐ

HTTD ⇒ QKTD

can ⇒ could 

HTHT ⇒ QKHT

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1. He asked her if she liked coffee.

2. He asked me if I was going to the cinema.

3. Ba asked Lan if she could swim.

4. Jack asked Linda if she had seen that film before.

1. She asked John where he lived.

2. She asked her boyfriend which dress he liked best.

`color{orange}{~MiaMB~}`