| Präsens (Present) "acknowledge" | I | acknowledge | |
| Präsens Verlaufsform (Present continuous) "acknowledge" | I | am acknowledging | |
| Präteritum (Simple past) "acknowledge" | I | acknowledged | |
| Perfekt Verlaufsform (Past Continuous) "acknowledge" | I | was acknowledging | |
| Present Perfect (Präsens) "acknowledge" | I | have acknowledged | |
| Present Continuous (Futur) "acknowledge" | I | have been acknowledging | |
| Plusquamperfekt (Past perfect) "acknowledge" | I | had acknowledged | |
| Plusquamperfekt Verlaufsform (Past perfect continuous) "acknowledge" | I | had been acknowledging | |
| Futur I (Future) "acknowledge" | I | will acknowledge | |
| Futur I Verlaufsform (Future continuous) "acknowledge" | I | will be acknowledging | |
| Futur II (Future perfect) "acknowledge" | I | will have acknowledged | |
| Futur II Verlaufsform (Future perfect continuous) "acknowledge" | I | will have been acknowledging |