When and why should we use the Present Simple?
The present simple is used for a gewoonte (routine) or a fact (habits) or if something is (not) regularly.
In the regular case we mostly see these type of words:
usually, often, always, never, sometimes
Example : I always go to school by bike.
How does it work?
I, you, we -> infinitive (hele werkwoord)
He , she and It -> The infinitive +s (es)