| Simple | Progressive | Perfect | Progressive |
| Present |
| I sharpen |
| you sharpen |
| he/she/it sharpens |
| we sharpen |
| you all sharpen |
| they sharpen |
|
| I am sharpening |
| you are sharpening |
| he/she/it is sharpening |
| we are sharpening |
| you all are sharpening |
| they are sharpening |
|
| I have sharpened |
| you have sharpened |
| he/she/it has sharpened |
| we have sharpened |
| you all have sharpened |
| they have sharpened |
|
| I have been sharpening |
| you have been sharpening |
| he/she/it has been sharpening |
| we have been sharpening |
| you all have been sharpening |
| they have been sharpening |
|
| Past |
| I sharpened |
| you sharpened |
| he/she/it sharpened |
| we sharpened |
| you all sharpened |
| they sharpened |
|
| I was sharpening |
| you were sharpening |
| he/she/it was sharpening |
| we were sharpening |
| you all were sharpening |
| they were sharpening |
|
| I had sharpened |
| you had sharpened |
| he/she/it had sharpened |
| we had sharpened |
| you all had sharpened |
| they had sharpened |
|
| I had been sharpening |
| you had been sharpening |
| he/she/it had been sharpening |
| we had been sharpening |
| you all had been sharpening |
| they had been sharpening |
|
| Future |
| I will sharpen |
| you will sharpen |
| he/she/it will sharpen |
| we will sharpen |
| you all will sharpen |
| they will sharpen |
|
| I will be sharpening |
| you will be sharpening |
| he/she/it will be sharpening |
| we are sharpening |
| you all will be sharpening |
| they will be sharpening |
|
| I will have sharpened |
| you will have sharpened |
| he/she/it will have sharpened |
| we will have sharpened |
| you all will have sharpened |
| they will have sharpened |
|
| I will have been sharpening |
| you will have been sharpening |
| he/she/it will have been sharpening |
| we will have been sharpening |
| you all will have been sharpening |
| they will have been sharpening |
|
