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