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