In the present simple tense, we use the base form of the verb to describe habits, general truths, and repeated actions.
Affirmative Form:
We use the base form of the verb
For he, she, and it, add -s or -es to the verb.
Examples:
Negative Form:
We use do not (don't) or does not (doesn't) + the base form of the verb.
For he, she, and it, use doesn't instead of don't.
Examples:
That's the basic idea!