`1`. Hong asked me if I was good at learning French.

`-` Lùi thì: HTĐ `->` QKĐ

`2`. Nam asked me if I was playing tennis then.

`-` Lùi thì: HTTD `->` QKTD

`-` Now `->` Then

`3`. She asked him if he would go to Nha Trang beach the next day.

`-` Lùi thì: will `->` would

`-` Tomorrow `->` The next day

`4`. Mary asked me if I could use a computer.

`-` Lùi thì: can `->` could

`5`. My teacher asked me if I went to school by bike.

`-` Lùi thì: HTĐ `->` QKĐ

`----------`

`@` Cấu trúc câu tường thuật dạng Yes/No question:

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