| Simple | Progressive | Perfect | Progressive |
| Present |
| I refine |
| you refine |
| he/she/it refines |
| we refine |
| you all refine |
| they refine |
|
| I am refining |
| you are refining |
| he/she/it is refining |
| we are refining |
| you all are refining |
| they are refining |
|
| I have refined |
| you have refined |
| he/she/it has refined |
| we have refined |
| you all have refined |
| they have refined |
|
| I have been refining |
| you have been refining |
| he/she/it has been refining |
| we have been refining |
| you all have been refining |
| they have been refining |
|
| Past |
| I refined |
| you refined |
| he/she/it refined |
| we refined |
| you all refined |
| they refined |
|
| I was refining |
| you were refining |
| he/she/it was refining |
| we were refining |
| you all were refining |
| they were refining |
|
| I had refined |
| you had refined |
| he/she/it had refined |
| we had refined |
| you all had refined |
| they had refined |
|
| I had been refining |
| you had been refining |
| he/she/it had been refining |
| we had been refining |
| you all had been refining |
| they had been refining |
|
| Future |
| I will refine |
| you will refine |
| he/she/it will refine |
| we will refine |
| you all will refine |
| they will refine |
|
| I will be refining |
| you will be refining |
| he/she/it will be refining |
| we are refining |
| you all will be refining |
| they will be refining |
|
| I will have refined |
| you will have refined |
| he/she/it will have refined |
| we will have refined |
| you all will have refined |
| they will have refined |
|
| I will have been refining |
| you will have been refining |
| he/she/it will have been refining |
| we will have been refining |
| you all will have been refining |
| they will have been refining |
|
