Affirmative
I/You/We/They + base verb.
He/She/It + verb + s.
I/You/We/They + base verb.
He/She/It + verb + s.
Negative
don't / doesn't + base verb.
don't / doesn't + base verb.
Questions
Do/Does + subject + base verb?
Do/Does + subject + base verb?
Remember
After does/doesn't, use the base form.
After does/doesn't, use the base form.