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