Respuestas
1. He goes to bed early
He went to bed early
2. We don't like onions
We didn't like onions
3. Stewart lives in Vancouver
Stewart lived in Vancouver
4. Does she exercise?
Did she exercise?
5. I hate cooking
I hated cooking
6. They play video games
They played video games
7. He knows the answer
He knew the answer
8. I forget his name
I forgot his name
9. They don't study history
They didn't study history
10. Do they drive?
Did they drive?
11. Jenny works at a hotel
Jenny worked at a hotel
12. Do you swim?
Did you swim?
13. We don't like the movie
We didn't like the movie
14. Where do you live?
Where did you live?
15. They don't drink tea
They didn't drink tea
16. They start class at 8:00
They started class at 8:00
17. Does he eat breakfast?
Did he eat breakfast?
18. I don't run fast
I didn't run fast
19. He has a car
He had a car
20. Do you enjoy sports?
Did you enjoy sports?
Explicación:
1. Identificar si en la oración no hay don't / doesn't o "?"
2. Si hay don't / doesn't la oración será en pasado negativo
3. Si la oración tiene ? la oración será interrogativo pasado
4. Si no hay don't / doesn't o ? se hará positivo pasado
A) Si es positivo, solo identificamos el verbo y lo cambiamos a pasado, solo eso cambia!
B) Si es negativo cambiamos don't / doesn't por didn't
C) Si es interrogativo se cambia do / does por did