| Simple | Progressive | Perfect | Progressive |
| Present |
| I certificate |
| you certificate |
| he/she/it certificates |
| we certificate |
| you all certificate |
| they certificate |
|
| I am certificating |
| you are certificating |
| he/she/it is certificating |
| we are certificating |
| you all are certificating |
| they are certificating |
|
| I have certificated |
| you have certificated |
| he/she/it has certificated |
| we have certificated |
| you all have certificated |
| they have certificated |
|
| I have been certificating |
| you have been certificating |
| he/she/it has been certificating |
| we have been certificating |
| you all have been certificating |
| they have been certificating |
|
| Past |
| I certificated |
| you certificated |
| he/she/it certificated |
| we certificated |
| you all certificated |
| they certificated |
|
| I was certificating |
| you were certificating |
| he/she/it was certificating |
| we were certificating |
| you all were certificating |
| they were certificating |
|
| I had certificated |
| you had certificated |
| he/she/it had certificated |
| we had certificated |
| you all had certificated |
| they had certificated |
|
| I had been certificating |
| you had been certificating |
| he/she/it had been certificating |
| we had been certificating |
| you all had been certificating |
| they had been certificating |
|
| Future |
| I will certificate |
| you will certificate |
| he/she/it will certificate |
| we will certificate |
| you all will certificate |
| they will certificate |
|
| I will be certificating |
| you will be certificating |
| he/she/it will be certificating |
| we are certificating |
| you all will be certificating |
| they will be certificating |
|
| I will have certificated |
| you will have certificated |
| he/she/it will have certificated |
| we will have certificated |
| you all will have certificated |
| they will have certificated |
|
| I will have been certificating |
| you will have been certificating |
| he/she/it will have been certificating |
| we will have been certificating |
| you all will have been certificating |
| they will have been certificating |
|
