| Simple | Progressive | Perfect | Progressive |
| Present |
| I prolong |
| you prolong |
| he/she/it prolongs |
| we prolong |
| you all prolong |
| they prolong |
|
| I am prolonging |
| you are prolonging |
| he/she/it is prolonging |
| we are prolonging |
| you all are prolonging |
| they are prolonging |
|
| I have prolonged |
| you have prolonged |
| he/she/it has prolonged |
| we have prolonged |
| you all have prolonged |
| they have prolonged |
|
| I have been prolonging |
| you have been prolonging |
| he/she/it has been prolonging |
| we have been prolonging |
| you all have been prolonging |
| they have been prolonging |
|
| Past |
| I prolonged |
| you prolonged |
| he/she/it prolonged |
| we prolonged |
| you all prolonged |
| they prolonged |
|
| I was prolonging |
| you were prolonging |
| he/she/it was prolonging |
| we were prolonging |
| you all were prolonging |
| they were prolonging |
|
| I had prolonged |
| you had prolonged |
| he/she/it had prolonged |
| we had prolonged |
| you all had prolonged |
| they had prolonged |
|
| I had been prolonging |
| you had been prolonging |
| he/she/it had been prolonging |
| we had been prolonging |
| you all had been prolonging |
| they had been prolonging |
|
| Future |
| I will prolong |
| you will prolong |
| he/she/it will prolong |
| we will prolong |
| you all will prolong |
| they will prolong |
|
| I will be prolonging |
| you will be prolonging |
| he/she/it will be prolonging |
| we are prolonging |
| you all will be prolonging |
| they will be prolonging |
|
| I will have prolonged |
| you will have prolonged |
| he/she/it will have prolonged |
| we will have prolonged |
| you all will have prolonged |
| they will have prolonged |
|
| I will have been prolonging |
| you will have been prolonging |
| he/she/it will have been prolonging |
| we will have been prolonging |
| you all will have been prolonging |
| they will have been prolonging |
|
