| singular | plural |
| Infinitive | | |
| acknowledge | |
| present simple | | |
| 1 | I acknowledge | we acknowledge |
| 2 | you acknowledge | you acknowledge |
| 3 | he/she/it acknowledges | they acknowledge |
| past simple | | |
| 1 | I acknowledged | we acknowledged |
| 2 | you acknowledged | you acknowledged |
| 3 | he/she/it acknowledged | they acknowledged |
| future simple | | |
| 1 | I will/shall acknowledge | we will/shall acknowledge |
| 2 | you will/shall acknowledge | you will/shall acknowledge |
| 3 | he/she/it will/shall acknowledge | they will/shall acknowledge |
| conditional simple | | |
| 1 | I would acknowledge | we would acknowledge |
| 2 | you would acknowledge | you would acknowledge |
| 3 | he/she/it would acknowledge | they would acknowledge |
| present continuous | | |
| 1 | I am acknowledging | we are acknowledging |
| 2 | you are acknowledging | you are acknowledging |
| 3 | he/she/it is acknowledging | they are acknowledging |
| past continuous | | |
| 1 | I was acknowledging | we were acknowledging |
| 2 | you were acknowledging | you were acknowledging |
| 3 | he/she/it was acknowledging | they were acknowledging |
| future continuous | | |
| 1 | I will be acknowledging | we will be acknowledging |
| 2 | you will be acknowledging | you will be acknowledging |
| 3 | he/she/it will be acknowledging | they will be acknowledging |
| conditional continuous | | |
| 1 | I would be acknowledging | we would be acknowledging |
| 2 | you would be acknowledging | you would be acknowledging |
| 3 | he/she/it would be acknowledging | they would be acknowledging |
| present perfect | | |
| 1 | I have acknowledged | we have acknowledged |
| 2 | you have acknowledged | you have acknowledged |
| 3 | he/she/it has acknowledged | they have acknowledged |
| past perfect | | |
| 1 | I had acknowledged | we had acknowledged |
| 2 | you had acknowledged | you had acknowledged |
| 3 | he/she/it had acknowledged | they had acknowledged |
| future perfect | | |
| 1 | I will have acknowledged | we will have acknowledged |
| 2 | you will have acknowledged | you will have acknowledged |
| 3 | he/she/it will have acknowledged | they will have acknowledged |
| conditional perfect | | |
| 1 | I would have acknowledged | we would have acknowledged |
| 2 | you would have acknowledged | you would have acknowledged |
| 3 | he/she/it would have acknowledged | they would have acknowledged |
