Respuestas
simple present: I play tennis.
She does not play tennis.
Does he play tennis?
The train leaves every morning at 8 AM.
The train does not leave at 9 AM.
When does the train usually leave?
She always forgets her purse.
He never forgets his wallet.
Every twelve months, the Earth circles the Sun.
Does the Sun circle the Earth? present continuous: I am going I am not going Am I going?
You are going You aren't going. Are you going?
He, she, it is going He, she, it isn't going Is he, she, it going?
We are going We aren't going Are we going?
You are going You aren't going Are you going?
They are going They aren't going Are they going?
past simple: They weren't in Rio last summer.
We didn't have any money.
We didn't have time to visit the Eiffel Tower.
We didn't do our exercises this morning.
Were they in Iceland last January?
Did you have a bicycle when you were young?
Did you do much climbing in Switzerland?