12 

-) My mother doesn't go shopping on Sundays

?) Does my mother go shopping on Sundays ?

13

+) You play football every afternoon

-) You don't play football every afternoon

14 

+) Mr. Mana likes coffee

?) Does Mr. Mana like coffe

15 

-) He doesn't like eating chocolate .

--Ngoc--

`-` Thì HTĐ 

`+` KĐ : S + Vs / es `-` S + is / am / are + adj / n

`+` PĐ : S + don't / doesn't + V `-` S + isn't / 'm not / aren't + adj / n

`+` NV : Do / Does + S + V ? `-` Is / Am / Are + S + adj / n ?

`=>` `DHNB` : always , usually , often , ...

`11`.

`( - )` Johnny isn't a student

`( + )` Is Johnny a student ?

`12`.

`( - )` My mother doesn't often go shopping on Sundays

`( ? )` Does your mother often go shopping on Sundays ?

`13`.

`( + )` I play football every afternoon

`( - )` I don't play football every afternoon

`14`.

`( + )` Mr.Mana likes coffee

`( ? )` Does Mr.Mana like coffee ?

`15`.

`( - )` He doesn't like eating chocolate

`\text{# TF}`