Present simple

Forms: walk, walks, go, goes.
We make questions and negatives with do or does and the infinitive:

Positive statement   They talk.           Mary goes.
Negative statement They don't talk.   Mary doesn't go.
Positive question     Do they talk.      Does Mary go?
Negative question   Don't they talk.   Doesn't Mary go?

We use the present simple for general facts, e.g.:

• The sun rises in the east.
• Most dogs swim very well.

We also use it for habits or regular actions in a time that includes present time, e.g.:

• Margaret walks to work.(La Margaret va a la feina caminant.)
• Nowadays all young people go to school. (Avui dia tots els nois van a l'escola.)