The present indefinite (simple)

Negative
I work Do I work? I do not work
He works Does he work? He does not work
She works Does she work? She does not work
We work Do we work? We do not work
You work Do you work? You do not work
They work Do they work? They do not work

Browns go to the seaside every summer.
2. Actions and states characterizing a given person.
She has many accomplishments: she sings and plays the piano beautifully.
3. Universal thruths, something which is eternally true.
Magnet attracts iron.
4. Actions going on at the present moment (with verbs not used in the Continuous form)
I hear somebody knock. Go and open the door.