The present simple can express an action that occurs at this moment.

- A routine: I walk to school.

- A habit: I play basketball every Wednesday.

- A fact: I have a blue eyes.

- A truth: The sun is yellow.


Afirmative clause:
Subject + verb in present --> I talk

Negative clause:
Subject + negative auxiliar + verb in present --> I don't talk

Interrogative clause:
Auxiliar + subject + verb in present? --> Do I talk?