Based on how we conjugate verbs in the past simple and the past participle, they can be divided into two types: Regular verbs and Irregular verbs.

"Regular and Irregular Verbs" in English Grammar

What Are Regular and Irregular Verbs?

Based on how a verb is conjugated in the past simple tense and past participle, we can divide verbs into two categories:

  • Regular verbs
  • Irregular verbs

Regular verbs

Most verbs in the English language are regular verbs, which means that the past simple form and the past participle are created by simply adding '-ed' or '-d' or sometimes '-t', to the end of the verb.

past simple form past participle form
walk walked walked
call called called
wait waited waited
work worked worked
live lived lived
build built built

Irregular verbs

Irregular verbs do not follow a fixed pattern when turning into the simple past or past participle form.
Their number is limited compared to regular verbs. There are approximately 200 irregular verbs in the English language. The irregular verbs are categorized into four groups:

  • Group I: Verbs that have different base, past simple and past participle forms
  • Group II: Verbs that have the same past simple and past participle forms
  • Group III: Verbs that have the same base and past participle forms
  • Group IV: Verbs that have the same base, past simple and past participle forms

'work' is a regular verb

Group I of Irregular Verbs

All three forms of the group I irregular verbs have different forms. Look at the table below to see some examples:

past form past participle form
be was/were been
do did done
eat ate eaten
go went gone
see saw seen

Group II of Irregular Verbs

The past and past participles forms of the group II irregular verbs are the same. Look at the table below to see some examples:

past form past participle form
buy bought bought
leave left left
teach taught taught
find found found
have had had

Group III of Irregular Verbs

Group III of irregular verbs has the same base form and past participle form. Look at the table to see some examples:

past form past participle form
become became become
run ran run
come came come

Group IV of Irregular Verbs

All three forms of the group IV irregular verbs are the same. Look at the table to see some example:

past form past participle form
hit hit hit
cut cut cut
cost cost cost
hurt hurt hurt
let let let

Review

Based on how a verb is conjugated in the past simple tense and past participle, we can divide verbs into two categories.

Regular Verbs

The pronunciation at the end of the verbs can be /t/ /d/ or /ɪd/.

Add d Add ed Add t it is common in British English
Present dance burn burn
Past tense danced burned burnt
Past participle danced burned burnt

Irregular Verbs

There are four groups of irregular verbs.

description present past past participle
Verbs that their base, past simple and past participle forms are different. be was/were been
Verbs that their past simple and past participle forms are the same. find found found
Verbs that their base and past participle forms are the same. come came come
Verbs that their base, past simple and past participle are the same. hurt hurt hurt

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