| Presente (Present) "undertake" | I | undertake | |
| Presente continuo (Present Continuous) "undertake" | I | am undertaking | |
| Pasado simple (Simple past) "undertake" | I | undertook | |
| Pasado continuo (Past Continuous) "undertake" | I | was undertaking | |
| Presente perfecto (Present perfect) "undertake" | I | have undertaken | |
| Presente perfecto continuo (Present perfect continuous) "undertake" | I | have been undertaking | |
| Pasado perfecto (Past perfect) "undertake" | I | had undertaken | |
| Pasado perfecto continuo (Past perfect continuous) "undertake" | I | had been undertaking | |
| Futuro (Future) "undertake" | I | will undertake | |
| Futuro continuo (Future continuous) "undertake" | I | will be undertaking | |
| Futuro perfecto (Future perfect) "undertake" | I | will have undertaken | |
| Futuro perfecto continuo (Future perfect continuous) "undertake" | I | will have been undertaking |