● Irregular
Indicative
Present●
| I | undergo |
| you | undergo |
| he / she / it | undergoes |
| we | undergo |
| they | undergo |
| you (plural) | undergo |
Past simple●
| I | underwent |
| you | underwent |
| he / she / it | underwent |
| we | underwent |
| they | underwent |
| you (plural) | underwent |
Future simple●
| I | will undergo |
| you | will undergo |
| he / she / it | will undergo |
| we | will undergo |
| they | will undergo |
| you (plural) | will undergo |
Present continuous●
| I | am undergoing |
| you | are undergoing |
| he / she / it | is undergoing |
| we | are undergoing |
| they | are undergoing |
| you (plural) | are undergoing |
Past continuous●
| I | was undergoing |
| you | were undergoing |
| he / she / it | was undergoing |
| we | were undergoing |
| they | were undergoing |
| you (plural) | were undergoing |
Future continuous●
| I | will be undergoing |
| you | will be undergoing |
| he / she / it | will be undergoing |
| we | will be undergoing |
| they | will be undergoing |
| you (plural) | will be undergoing |
Present perfect●
| I | have undergone |
| you | have undergone |
| he / she / it | has undergone |
| we | have undergone |
| they | have undergone |
| you (plural) | have undergone |
Past perfect●
| I | had undergone |
| you | had undergone |
| he / she / it | had undergone |
| we | had undergone |
| they | had undergone |
| you (plural) | had undergone |
Future perfect●
| I | will have undergone |
| you | will have undergone |
| he / she / it | will have undergone |
| we | will have undergone |
| they | will have undergone |
| you (plural) | will have undergone |
Conditional
Present●
| I | would undergo |
| you | would undergo |
| he / she / it | would undergo |
| we | would undergo |
| they | would undergo |
| you (plural) | would undergo |
Conditional perfect●
| I | would have undergone |
| you | would have undergone |
| he / she / it | would have undergone |
| we | would have undergone |
| they | would have undergone |
| you (plural) | would have undergone |
Subjunctive
Present●
| I | undergo |
| you | undergo |
| he / she / it | undergo |
| we | undergo |
| they | undergo |
| you (plural) | undergo |
Imperative
Affirmative●
| you | undergo |
| we | let's undergo |
| you (plural) | undergo |
Practice in context
Fill in the verb in real sentences — correct answers count toward the table above.