Irregular Verbs

A verb is a word that describes existence, action, or occurrence. Verbs are divided into  regular and irregular verbs. To make a regular verb in the past and past participle tense there are some rules:

1) In most cases, simply add "ed"

clean/cleaned, watch/watched 

2) If the word ends in "e", just add "d"

dance/danced, amaze/amazed, use/used

3) If the word ends in a consonant + y, drop the y and add "ied"

study/studied, party/partied, marry/married

ATTENTION: If the word ends in a vowel + y, just add "ed": play/played, enjoy/enjoyed

4) If the word ends in consonant + vowel + consonant AND the stress is on the last syllable, double the consonant at the end and add “ed"

stop/stopped, nod/nodded, admit/admitted, commit/committed

ATTENTION 1: If the stress is not on the last syllable, don't double the consonant, just add "ed": visit/visited, happen/happened, consider/considered

ATTENTION 2: If the word ends in two consonants, don't double consonant, just add "ed": start/started, call/called, miss/missed, respect/respected 

ATTENTION 3: If the word ends in two vowels + consonant, don’t double the consonant, just add "ed": remain/remained, reveal/revealed

ATTENTION 4: When the word ends in “w”, the “w” is not considered a consonant, so don’t double the letter, just add “ed”: show/showed, snow/snowed

On the other hand, irregular verbs don’t follow the pattern above; they follow an alternative pattern. Even though, there are no rules for the past tense or past participle of irregular verbs, you can use some logic to help you memorize them.
For example: 
Some verbs follow the same patterns: 
forgive, forgave, forgiven follow the same pattern as give, gave, given
awake, awoke, awoken follow the same pattern as wake, woke, woken
ring, rang, rung follow the same pattern as sing, sang, sung
some verbs you add the letter “t” at the end: burn/burnt, learn/learnt, mean/meant

Click here to download a list of the most common irregular verbs.