| Simple | Progressive | Perfect | Progressive |
| Present |
| I guarantee |
| you guarantee |
| he/she/it guarantees |
| we guarantee |
| you all guarantee |
| they guarantee |
|
| I am guaranteeing |
| you are guaranteeing |
| he/she/it is guaranteeing |
| we are guaranteeing |
| you all are guaranteeing |
| they are guaranteeing |
|
| I have guaranteed |
| you have guaranteed |
| he/she/it has guaranteed |
| we have guaranteed |
| you all have guaranteed |
| they have guaranteed |
|
| I have been guaranteeing |
| you have been guaranteeing |
| he/she/it has been guaranteeing |
| we have been guaranteeing |
| you all have been guaranteeing |
| they have been guaranteeing |
|
| Past |
| I guaranteed |
| you guaranteed |
| he/she/it guaranteed |
| we guaranteed |
| you all guaranteed |
| they guaranteed |
|
| I was guaranteeing |
| you were guaranteeing |
| he/she/it was guaranteeing |
| we were guaranteeing |
| you all were guaranteeing |
| they were guaranteeing |
|
| I had guaranteed |
| you had guaranteed |
| he/she/it had guaranteed |
| we had guaranteed |
| you all had guaranteed |
| they had guaranteed |
|
| I had been guaranteeing |
| you had been guaranteeing |
| he/she/it had been guaranteeing |
| we had been guaranteeing |
| you all had been guaranteeing |
| they had been guaranteeing |
|
| Future |
| I will guarantee |
| you will guarantee |
| he/she/it will guarantee |
| we will guarantee |
| you all will guarantee |
| they will guarantee |
|
| I will be guaranteeing |
| you will be guaranteeing |
| he/she/it will be guaranteeing |
| we are guaranteeing |
| you all will be guaranteeing |
| they will be guaranteeing |
|
| I will have guaranteed |
| you will have guaranteed |
| he/she/it will have guaranteed |
| we will have guaranteed |
| you all will have guaranteed |
| they will have guaranteed |
|
| I will have been guaranteeing |
| you will have been guaranteeing |
| he/she/it will have been guaranteeing |
| we will have been guaranteeing |
| you all will have been guaranteeing |
| they will have been guaranteeing |
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