Regular Verbs:
* Add "-ed" to the base form of the verb:
* walk - walked
* play - played
* jump - jumped
* like - liked
Irregular Verbs:
* These verbs have unique past tense forms that you need to memorize:
* go - went
* see - saw
* eat - ate
* do - did
* have - had
* say - said
Past Participle:
* This is the form of a verb used with "have" to form the perfect tenses (present perfect, past perfect, future perfect) or with "be" to form the passive voice:
* Regular verbs: same as the past tense (walked, played, jumped, liked)
* Irregular verbs: may be different from the past tense (gone, seen, eaten, done, had, said)
Other Notes:
* Double the consonant: If the base form of the verb ends in a consonant followed by a single vowel, double the consonant before adding "-ed" (e.g., stop - stopped, plan - planned).
* Drop the "y" and add "-ied": If the base form of the verb ends in a consonant followed by "y," drop the "y" and add "-ied" (e.g., study - studied, carry - carried).
Examples:
* Present Tense: I walk to school.
* Past Tense: I walked to school yesterday.
* Present Perfect: I have walked to school every day this week.
* Past Perfect: I had walked to school before it started raining.
* Passive Voice: The ball was thrown by the boy.
It's important to learn the past tense and past participle forms of irregular verbs, as they are used in a variety of grammatical structures. You can find lists of irregular verbs online or in grammar textbooks.