Câu tường thuật - dạng câu kể 

S + said to / told + O + (that) + S + V (lùi thì)

S + said + (that) + 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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If 2,3→ k lùi

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1. Huyen asked Nga what she would do if she were having a problem with grammar.

2. 

C1: She told her brother that if she were him, she would stop smoking.

C2: She advised her brother to stop smoking.

3. He said that he would have been in bad trouble if Lan hadn't ...  him. (chỗ... thiếu động từ -> em tự điền vò nhé)

`color{orange}{~MiaMB~}` 

`1.` Huyen asked Nga what she would do if she had been having a problem with grammar

`-` lùi thì : QKTD `->` QKHTTD

`@` Câu gián tiếp dạng Wh_question:

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

`2.` She said to her brother If she were him, she would stop smoking

`@` Câu gián tiếp:

S + said to sb + (that) + S + V(lùi thì)

`3.` He said he would have been in bad trouble if Lan hadn't him

`-` Câu điều kiện loại 3:

If + S + had + V3/ed + O, S + would + have + V3/ed + O

`->` diễn tả hành động không có thật trong quá khứ

`***` Câu điều kiện loại `2,3`không lùi thì trong câu tường thuật