| Présent (Present) "undergo" | I | undergo | |
| Présent continu (Present Continuous) "undergo" | I | am undergoing | |
| Passé (Simple past) "undergo" | I | underwent | |
| Passé antérieur (Past Continuous) "undergo" | I | was undergoing | |
| Présent parfait (Present perfect) "undergo" | I | have undergone | |
| Continu Présent (Present perfect continuous) "undergo" | I | have been undergoing | |
| Imparfait (Past perfect) "undergo" | I | had undergone | |
| Plus-que-parfait (Past perfect continuous) "undergo" | I | had been undergoing | |
| Futur simple (Future) "undergo" | I | will undergo | |
| Futur (Future continuous) "undergo" | I | will be undergoing | |
| Futur antérieur (Future perfect) "undergo" | I | will have undergone | |
| Futur antérieur continu (Future perfect continuous) "undergo" | I | will have been undergoing |