Irregular Verbs with the i-a-u Pattern
These are verbs whose base form has the vowel i, past simple changes to a, and past participle to u.
infinitive (i) → simple past (a) → past participle (u)
| # | Base Form | Past Simple | Past Participle | |
|---|---|---|---|---|
| 1 | begin | began | begun | |
| 2 | drink | drank | drunk | |
| 3 | swim | swam | swum | |
| 4 | shrink | shrank | shrunk | |
| 5 | sing | sang | sung | |
| 6 | ring | rang | rung | |
| 7 | spring | sprang | sprung |
Exercise: Exercise of English Irregular Verbs