For regular verbs the past participle is the same as the past simple: finished, decided, lived. Many common verbs are irregular and have a third form.
| Base | Past simple | Past participle |
|---|---|---|
| go | went | gone |
| see | saw | seen |
| do | did | done |
| write | wrote | written |
| eat | ate | eaten |
| be | was / were | been |
| Positive | Negative | Question | |
|---|---|---|---|
| I / you / we / they | I've seen | I haven't seen | Have you seen? |
| he / she / it | She's seen | She hasn't seen | Has she seen? |