Tham khảo
`1,`
`(-)` Nam didn’t write an essay in Literature class this morning.
`(?)` Did Nam write an essay in Literature class this morning?
`2,`
`(-)` I didn’t watch TV yesterday morning.
`(?)` Did you watch TV yesterday morning?
`3,`
`(-)` Nam and you weren't in the English club last Tuesday.
`(+)` Were Nam and you in the English club last Tuesday?
`4,`
`(-)` They didn’t eat noodles two hours ago.
`(?)` Did they eat noodles two hours ago?
`5,`
`(-)` We didn’t always have a nice time on Christmas holiday in the past.
`(?)` Did we always have a nice time on Christmas holiday in the past?
`6,`
`(-)` My father didn’t decorate the Christmas tree.
`(?)` Did my father decorate the Christmas tree?
`7,`
`(-)` She didn’t buy a new dress yesterday.
`(?)` Did she buy a new dress yesterday?
`8,`
`(-)` They weren't late for school.
`(?)` Were they late for school?
`9,`
`(-)` Mr. Tam didn’t take his children to tướng the museum last Sunday.
`(?)` Did Mr.Tam take his children to tướng the museum last Sunday?
`10,`
`(-)` Hoa didn’t make a cushion for her armchair.
`(?)` Did Hoa make a cushion for her armchair?
* Thì quá khứ đơn :
`->` Hành động tiếp tục xẩy ra và kết đôn đốc nhập quá khứ
`+,` Động kể từ tobe :
`(+)` S + was/were + ...
`(-)` S + was/were + not + ...
`(?)` Was/Were + S + ... ?
- Chủ ngữ số không nhiều : was
- Chủ ngữ số nhiều : were
`+,` Động kể từ thông thường :
`(+)` S + V2/ed
`(-)` S + didn't + V (bare)
`(?)` Did + S + V (bare)
`+,` DHNB : yesterday, khoảng chừng thời hạn + ago, in the past, in + năm quá khứ ...