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