`-` Tường thuật NV ( Yes / No ) :

`=>` S + asked + O + if / whether + S + V ( lùi thì )

`-` HTĐ `->` QKĐ : S + Ved / V2 `-` S + was / were + adj / n

`-` QKĐ / HTHT `->` QKHT : S + had + VPII

`-` TLĐ `->` TLTQK : S + would + V

`-` Can `->` Could

`1`.My friend asked me if I was going to leave the following day

`2`.His teacher asked him whether he had done his math project

`3`.Sally asked me if I had phoned her the day before

`4`.Her mother asked her whether she liked the dress she made for her

`5`.Rosie asked me if I could hear someone singing in that room

`6`.Linda asked her brother if he would arrive home early that night

`7`.Peter asked me whether I was free on Saturday afternoon

`8`.Helen asked William whether he wanted to become a firefighter when he grew up

`\text{# Eternal}`