Bij
andere werkwoorden zet je
don't / do not voor het werkwoord.
Bij he/she/it wordt dit doesn't / does not.
Omdat de -s nu al in does voorkomt, laat je de s achter het werkwoord weg.
They
live in Spain.
They don't live in Spain.
You travel by train.
You do not travel by train.
She works in that building.
She doesn't work in that building.
He likes football.
He does not like football.