Here's a breakdown:
* Regular verbs: These verbs form their past tense and past participle by adding "-ed" to the base form.
* Examples: walk - walked, play - played, jump - jumped
* Irregular verbs: These verbs don't follow the "-ed" rule. They have unique forms for the past tense and past participle.
* Examples: go - went - gone, see - saw - seen, eat - ate - eaten
So, when a verb ends in "-ed" for both the past tense and past participle, you can be sure it's a regular verb.