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