Cấu trúc câu gián tiếp dạng hỏi yes/ no questions: s + asked (sb)/ wanted to know + if/ whether + (s1) + verb lùi một thì.

`1.` He asked me if I could sing that song.

`2.` I asked him if they were cutting grass in that garden.

`3.` He asked me if I liked fish.

`4.` I asked him if she worked there.

`5.` He asked me if they played guitar well.

`6.` I asked her if she could lend him some money.

`7.` She asked them if he would come the next day morning.

`8.` They asked me if my parents liked watching dinner after dinner.

`9.` I asked Tam if she was speaking to Mr. Minh then.

`10.` I asked him if they were English.

`11.` I asked him if she took a taxi to school.

`12.` He asked me if they worked for my company.

`13.` I asked him if it would be difficult for us to solve that problem.

`14.` I asked her if she would be free the next month.

`15.` He asked me if she was my form teacher.