$\text{Form chung:}$

`+)` S + said/told + (to sb) + that + S + V(lùi thì) + .... (VD: HTĐ `->` QKĐ, QKĐ `->` QKHT,...)

`+)` Đổi các trạng từ chỉ thời gian (VD: tomorrow `->` the next day,...)

`+)` Đối với câu điều kiện, không lùi thì

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`6.`

`->` He said that gas emission from vehicles was the main cause of air pollution.

`7.`

`->` Nam said that he could make a speech about climate change without preparation.

`8.`

`->` The teacher said to Mike that if he would finish his English exercises the next day.

`9.`

`->` Linda asked that who was talking about natural disasters in the meeting today.

`10.`

`->` She said that we released tons of rubbish into rivers and oceans every day.

Chúc cậu học tốt nhé!!!

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 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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HTD ⇒ QKD

can ⇒ could 

will ⇒ would 

HTTD ⇒ QKTD

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tomorrow ⇒ the next day / the following day

today ⇒ that day

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6. He said that gas emission from vehicles was the main cause of air pollution.

7. Nam said that he could me a speech about climate change without preparation.

8. The teacher asked mIke if he would finish his English exercises the next day.

9. Linda asked who was talking about natural disasters in the meeting that day.

10. She said that we released tons of rubbish onto rivers and oceans every day.

`color{orange}{~MiaMB~}`