| Simple | Progressive | Perfect | Progressive |
| Present |
| I sweeten |
| you sweeten |
| he/she/it sweetens |
| we sweeten |
| you all sweeten |
| they sweeten |
|
| I am sweetening |
| you are sweetening |
| he/she/it is sweetening |
| we are sweetening |
| you all are sweetening |
| they are sweetening |
|
| I have sweetened |
| you have sweetened |
| he/she/it has sweetened |
| we have sweetened |
| you all have sweetened |
| they have sweetened |
|
| I have been sweetening |
| you have been sweetening |
| he/she/it has been sweetening |
| we have been sweetening |
| you all have been sweetening |
| they have been sweetening |
|
| Past |
| I sweetened |
| you sweetened |
| he/she/it sweetened |
| we sweetened |
| you all sweetened |
| they sweetened |
|
| I was sweetening |
| you were sweetening |
| he/she/it was sweetening |
| we were sweetening |
| you all were sweetening |
| they were sweetening |
|
| I had sweetened |
| you had sweetened |
| he/she/it had sweetened |
| we had sweetened |
| you all had sweetened |
| they had sweetened |
|
| I had been sweetening |
| you had been sweetening |
| he/she/it had been sweetening |
| we had been sweetening |
| you all had been sweetening |
| they had been sweetening |
|
| Future |
| I will sweeten |
| you will sweeten |
| he/she/it will sweeten |
| we will sweeten |
| you all will sweeten |
| they will sweeten |
|
| I will be sweetening |
| you will be sweetening |
| he/she/it will be sweetening |
| we are sweetening |
| you all will be sweetening |
| they will be sweetening |
|
| I will have sweetened |
| you will have sweetened |
| he/she/it will have sweetened |
| we will have sweetened |
| you all will have sweetened |
| they will have sweetened |
|
| I will have been sweetening |
| you will have been sweetening |
| he/she/it will have been sweetening |
| we will have been sweetening |
| you all will have been sweetening |
| they will have been sweetening |
|
