| Presente (Present) "improve" | I | improve | |
| Presente continuo (Present Continuous) "improve" | I | am improving | |
| Pasado simple (Simple past) "improve" | I | improved | |
| Pasado continuo (Past Continuous) "improve" | I | was improving | |
| Presente perfecto (Present perfect) "improve" | I | have improved | |
| Presente perfecto continuo (Present perfect continuous) "improve" | I | have been improving | |
| Pasado perfecto (Past perfect) "improve" | I | had improved | |
| Pasado perfecto continuo (Past perfect continuous) "improve" | I | had been improving | |
| Futuro (Future) "improve" | I | will improve | |
| Futuro continuo (Future continuous) "improve" | I | will be improving | |
| Futuro perfecto (Future perfect) "improve" | I | will have improved | |
| Futuro perfecto continuo (Future perfect continuous) "improve" | I | will have been improving |