| Present Simple - Presente (Present) "undergo" | I | undergo | |
| Presente Contínuo (Present Continuous) (Present Continuous) "undergo" | I | am undergoing | |
| Tempo passado (Simple past) "undergo" | I | underwent | |
| Passado Contínuo (Past Continuous) "undergo" | I | was undergoing | |
| Present Perfect (Present perfect) "undergo" | I | have undergone | |
| Perfeito Presente Contínuo (Present Perfect Continuous) "undergo" | I | have been undergoing | |
| Past Perfect (Present perfect) "undergo" | I | had undergone | |
| Perfeito presente contínuo (Past perfect continuous) "undergo" | I | had been undergoing | |
| O futuro (Future) "undergo" | I | will undergo | |
| Futuro do Pretérito (Future Continuous) "undergo" | I | will be undergoing | |
| Futuro (Future perfect) "undergo" | I | will have undergone | |
| Perfeito Futuro do Pretérito (Future perfect continuous) "undergo" | I | will have been undergoing |