2. Pedro played football last Sunday.

→ Pedro didn't play football last Sunday.

3. I watched TV last night.

→ I didn't watch TV last night.

4. Aya listened to music yesterday evening.

→ Aya didn't listen to music yesterday evening.

5. The cat climbed a tree yesterday morning.

→ The cat didn't climb a tree yesterday morning.

6. It rained last week.

→ It didn't rain last week.

7. He smiled at me.

→ He didn't smile at me.

8. George tidied his room an hour ago.

→ George didn't tidy his room an hour ago.

`\text{___________________________________________________}`

Cấu trúc thì quá khứ đơn của động từ thường:

(+): S + V_ed/Vp2 + O.

(-): S + didn't + V + O.

(?): Did + S + V + O?