`1.` He asked me if I smoked

`2.` He asked me if I was interested in video games

`3.` Tom asked me if I remembered him

`4.` Nam asked Lan if her house was big

`5.` Jane asked Susan if she could open the door for him

`6.` I asked Thao if it was big or small

`7.` The teacher asked Minh if he could play the piano

`8.` I asked Hanh if her brother liked going fishing

`9.` Hoa asked Tuan if he would invite his girlfriend to his birthday party

`10.` My father asked me if I did well in my test

-----------------------------

`-` Câu tường thuật dạng "yes/no" question 

`=>` Form: S + asked + (O) + if/ whether + S + V + ... 

`1.` He asked me if I smoked

`2.` He asked me if I was interested in video games

`3.` Tom asked me if I remembered him

`4.` Nam asked Lan if her house was big

`5.` Jane asked Susan if she could open the door for him

`6.` I asked Thao if it was big or small

`7.` The teacher asked Minh if he could play the piano

`8.` I asked Hanh if her brother liked going fishing

`9.` Hoa asked Tuan if he would invite his girlfriend to his birthday party

`10.` My father asked me if I did well in my test

*Yes - No question:

S + asked + (O) + if/ whether + S + V

*Lùi thì:

Quá khứ đơn → Quá khứ hoàn thành

Hiện tại đơn → Quá khứ đơn

Hiện tại hoàn thành → Quá khứ hoàn thành

Hiện tại tiếp diễn → Quá khứ tiếp diễn

Quá khứ tiếp diễn → Quá khứ hoàn thành tiếp diễn

Hiện tại hoàn thành tiếp diễn → Quá khứ hoàn thành tiếp diễn

will → would

can → could

may → might 

must → had to

shall → should

be going to → was/ were going to