A formação do Past Tense e do Past Participle, de acordo com a regra geral que se aplica a todos os demais verbos, se dá através do sufixo -ed.
Portanto, todo verbo que não seguir este padrão, será classificado como irregular.
É interessante notar que a irregularidade dos verbos em inglês manifesta-se apenas nas formas do Past e do Past Participle, e não na conjugação dos mesmos, como em português.
Os únicos verbos do inglês que têm também uma conjugação irregular são o verbo to be e os verbos auxiliares modais (can, may, might, shall, should, must, etc.).
Verbos Irregulares
| Infinitive | Past | Participle | Tradução |
| be | was, were | been | ser, estar |
| beat | beat | beaten | bater, derrotar, pulsar |
| become | became | become | tornar-se |
| begin | began | begun | começar |
| bite | bit | bitten | morder, picar |
| blow | blew | blown | soprar, tocar (instrumento de sopro) |
| break | broke | broken | quebrar, interromper |
| bring | brought | brought | trazer |
| build | built | built | construir |
| buy | bought | bought | comprar |
| catch | caught | caught | agarrar, pegar (doença) |
| choose | chose | chosen | escolher |
| come | came | come | vir, chegar, aproximar-se, acontecer |
| cost | cost | cost | custar |
| cut | cut | cut | cortar |
| deal | dealt | dealt | negociar, distribuir |
| dig | dug | dug | cavar |
| do | did | done | fazer, executar |
| draw | drew | drawn | desenhar, puxar, arrastar |
| dream | dreamt/ dreamed | dreamt/ dreamed | sonhar |
| drink | drank | drunk | beber, embriagar-se |
| drive | drove | driven | dirigir |
| eat | ate | eaten | comer |
| fall | fell | fallen | cair |
| feed | fed | fed | alimentar (se), suprir |
| feel | felt | felt | sentir |
| fight | fought | fought | lutar |
| find | found | found | encontrar |
| fly | flew | flown | voar |
| forget | forgot | forgotten | esquecer (se) |
| freeze | froze | frozen | gelar, congelar |
| get | got | got/ gotten | conseguir, ganhar |
| give | gave | given | dar, conceder |
| go | went | gone | ir |
| grow | grew | grown | crescer, cultivar |
| hang | hung | hung | pendurar |
| have | had | had | ter, possuir |
| hear | heard | heard | ouvir |
| hide | hid | hidden | esconder, ocultar (se) |
| hit | hit | hit | bater |
| hold | held | held | segurar, manter, conter |
| hurt | hurt | hurt | machucar |
| keep | kept | kept | guardar, manter, permanecer, ficar |
| know | knew | known | saber , conhecer |
| lay | laid | laid | pôr, colocar, botar (ovos) |
| learn | learnt | learnt | aprender |
| leave | left | left | deixar, partir |
| lend | lent | lent | emprestar |
| let | let | let | deixar, alugar |
| lie | lay | lain | jazer, deitar ou mentir, enganar |
| light | lit / lighted | lit/ lighted | iluminar, acender |
| lose | lost | lost | perder |
| make | made | made | fazer, produzir, fabricar |
| mean | meant | meant | significar, ter intenção |
| meet | met | met | encontrar-se com |
| pay | paid | paid | pagar |
| put | put | put | pôr |
| read | read | read | ler |
| rid | rid | rid | cavalgar, livrar, desembaraçar |
| ride | rode | ridden | viajar, cavalgar |
| ring | rang | rung | soa , tocar a campainha |
| rise | rose | risen | nascer, surgir, erguer-se |
| run | ran | run | correr, administrar |
| say | said | said | dizer |
| see | saw | seen | ver |
| sell | sold | sold | vender |
| send | sent | sent | enviar |
| set | set | set | colocar, fixar, arrumar |
| shake | shook | shaken | sacudir |
| shine | shone | shone | brilhar |
| shoot | shot | shot | atirar, disparar |
| show | showed | shown/ showed | mostrar |
| shut | shut | shut | fechar |
| sing | sang | sung | cantar |
| sink | sank | sunk | afundar, naufragar |
| sit | sat | sat | sentar |
| sleep | slept | slept | dormir |
| slide | slid | slid | escorregar |
| slit | slit | slit | fender, rachar |
| smell | smelt | smelt | cheirar |
| speak | spoke | spoken | falar |
| spend | spent | spent | gastar |
| spread | spread | spread | difundir, divulgar, espalhar |
| stand | stood | stood | ficar de pé, aguentar |
| steal | stole | stolen | roubar |
| strike | struck | struck | fazer greve , bater |
| swear | swore | sworn | jurar, blasfemar |
| sweep | swept | swept | varrer |
| swim | swam | swum | nadar |
| swing | swung | swung | balançar |
| take | took | taken | tomar, pegar |
| teach | taught | taught | ensinar |
| tell | told | told | contar, dizer |
| think | thought | thought | pensar, achar |
| throw | threw | thrown | arremessar |
| understand | understood | understood | entender, compreender |
| wake | woke/ waked | woke/waked | acordar |
| wear | wore | worn | vestir, usar |
| wed | wed | wed | desposar |
| wet | wet | wet | umedecer |
| win | won | won | ganhar, vencer |
| wring | wrung | wrung | espremer |
| write | wrote | written | escrever |
