| Présent (Present) "demonstrate" | I | demonstrate | |
| Présent continu (Present Continuous) "demonstrate" | I | am demonstrating | |
| Passé (Simple past) "demonstrate" | I | demonstrated | |
| Passé antérieur (Past Continuous) "demonstrate" | I | was demonstrating | |
| Présent parfait (Present perfect) "demonstrate" | I | have demonstrated | |
| Continu Présent (Present perfect continuous) "demonstrate" | I | have been demonstrating | |
| Imparfait (Past perfect) "demonstrate" | I | had demonstrated | |
| Plus-que-parfait (Past perfect continuous) "demonstrate" | I | had been demonstrating | |
| Futur simple (Future) "demonstrate" | I | will demonstrate | |
| Futur (Future continuous) "demonstrate" | I | will be demonstrating | |
| Futur antérieur (Future perfect) "demonstrate" | I | will have demonstrated | |
| Futur antérieur continu (Future perfect continuous) "demonstrate" | I | will have been demonstrating |