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