Thì QKĐ :

`-` CKĐ : `\text{S + Ved / V2}`

`-` CPĐ : `\text{S + didn't + V}`

`-` CNV : `\text{Did + S + V ?}`

`1`.

`( + )` They ate lunch at home yesterday

`( ? )` Did they eat lunch at home yesterday ?

`2`.

`( + )` Mai had breakfast this morning

`( - )` Mai didn't have breakfast this morning

`3`.

`( - )` I didn't play games last Sunday

`( ? )` Did you play games last Sunday ?

`4`.

`( + )` My father went to work last weekend

`( ? )` Did your father go to work last weekend ?

`5`.

`( + )` She listened to music last Monday

`( - )` She didn't listen to music last Monday

`\text{@ TheFox}`