`1.` PĐ: Hoa doesn't go on holiday every winter

NV: Does Hoa go on holiday every winter?

`2.` PĐ: The water isn't hot in summer

NV: Is the water hot in summer?

`3.` PĐ: They aren't listening to music at the moment

NV: Are they listening to music at the moment? 

`4.` PĐ: Ba doesn't often wash his teeth every day

NV: Does Ba often wash his teeth every day? 

`5.` PĐ: My sister doesn't have lunch at this time

NV: Does my sister have at this time? 

`6.` PĐ: We play outside in the evening

NV: Do we never play outside in the evening?

`7.` My dad doesn't sometimes read books in the evening

NV: Does my dad sometimes read books in the evening?

`8.` PĐ: Mr. Nam isn't driving at present

NV: Is Mr. Nam driving at the present? 

`9.` PĐ: The trees often aren't green in the spring

NV: Are the trees often green in the spring?

`10.` PĐ: Lan and Hoa aren't usually early at school 

NV: Are Lan and Hoa usually early at school?

`**` PĐ là phủ định 

NV là nghi vấn