Câu tường thuật - dạng Yes/No-questions 

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

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QKTD ⇒ QKHTTD

will ⇒ would 

HTD ⇒ QKD

QKD ⇒ QKD / QKHT

HTHT ⇒ QKHT

TLG ⇒ was/were + going to  +V1 

may ⇒ might 

can ⇒ could 

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this ⇒ that 

last ....⇒ the ... before / the previous ... 

here ⇒ there 

today ⇒ that day 

next ... ⇒ the next ... / the following ... 

tomorrow ⇒ the next day / the following day 

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1. She asked Ba if he had been reading that book at 8 o'clock the Sunday evening before.

2. They asked me if it would be dangerous to stand there.

3. He asked her if it took her much time to draw that picture. 

4. I asked her if they had accepted her application for the job.

5. He wanted to know if she would look after the children when I went away.

6. Nick asked his teacher if the astronauts had ever forgotten anything from the Earth. 

7. Tom wanted to know if he had to move the lawn in their garden that day.

8. Mai asked Dr. Taylor if he was going to visit NASA the next Thursday.

9. She asked me if she might talk with me for a while after she finished her homework the next day.

10. The boy asked his sister if she could tell him something about Jupiter.

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