$\text{Cấu trúc thì Qúa khứ đơn}$

Với tobe

(+) S + was/were + .....

(-) S + was/were + not + ......

(?) Was/Were + S + ......

Với động từ (V)

(+) S + V(ed/c2) + .....

(-) S + didn't + V(nguyên thể) +.....

(?) Did + S + V(nguyên thể) +....

$\text{4. They ate noodles two hours ago. }$

$\text{(-) They didn't eat noodles two hours ago.}$

$\text{(?) Did they eat noodles two hours ago?}$

$\text{5. We had a nice time on Christmas holiday in the past.}$

$\text{(-) We didn't have a nice time on Christmas holiday in the past.}$

$\text{(?) Did you have have a nice time on Christmas holiday in the past?}$

$\text{6. My father decorated the Christmas tree.}$

$\text{(-) My father didn't decorate the Christmas tree.}$

$\text{(?) Did your father decorate the Christmas tree?}$

$\text{7. She bought a new dress yesterday.}$

$\text{(-) She didn't buy a new dress yesterday.}$

$\text{(?) Did she buy a new dress yesterday?}$

$\text{8. They were late for school}$

$\text{(-) They weren't late for school}$

$\text{(?) Were they late for school?}$

$\text{Mr Tam took his children to the museum last Sunday.}$

$\text{(-) Mr Tam didn't take his children to the museum last Sunday.}$

$\text{(?) Did Mr Tam take his children to the museum last Sunday?}$

#cày ít

thì QKĐ 

(+) S + V-ed / V2

(-) S + didn't + V nguyên mẫu

(?) did + S + V nguyên mẫu

4 they didn't eat nooldles two hours ago

did they eat nooldles two hours ago ?

5 we didn't  have a nice time on christmas holiday in the past

did you   have a nice time on christmas holiday in the past ?

6 my father didn't decorate the chrismast tree

did your father decorate the chrismast 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 the museuam last sunday

did mr tam take his children to the museuam last sunday ?