Here's why:
* Regular verbs form their past tense by adding "-ed" (e.g., walk - walked, jump - jumped).
* Irregular verbs have unique past tense forms that don't follow the regular pattern (e.g., sing - sang, go - went, whisper - whispered).
Here's why:
* Regular verbs form their past tense by adding "-ed" (e.g., walk - walked, jump - jumped).
* Irregular verbs have unique past tense forms that don't follow the regular pattern (e.g., sing - sang, go - went, whisper - whispered).