| Simple | Progressive | Perfect | Progressive |
| Present |
| I preheat |
| you preheat |
| he/she/it preheats |
| we preheat |
| you all preheat |
| they preheat |
|
| I am preheating |
| you are preheating |
| he/she/it is preheating |
| we are preheating |
| you all are preheating |
| they are preheating |
|
| I have preheated |
| you have preheated |
| he/she/it has preheated |
| we have preheated |
| you all have preheated |
| they have preheated |
|
| I have been preheating |
| you have been preheating |
| he/she/it has been preheating |
| we have been preheating |
| you all have been preheating |
| they have been preheating |
|
| Past |
| I preheated |
| you preheated |
| he/she/it preheated |
| we preheated |
| you all preheated |
| they preheated |
|
| I was preheating |
| you were preheating |
| he/she/it was preheating |
| we were preheating |
| you all were preheating |
| they were preheating |
|
| I had preheated |
| you had preheated |
| he/she/it had preheated |
| we had preheated |
| you all had preheated |
| they had preheated |
|
| I had been preheating |
| you had been preheating |
| he/she/it had been preheating |
| we had been preheating |
| you all had been preheating |
| they had been preheating |
|
| Future |
| I will preheat |
| you will preheat |
| he/she/it will preheat |
| we will preheat |
| you all will preheat |
| they will preheat |
|
| I will be preheating |
| you will be preheating |
| he/she/it will be preheating |
| we are preheating |
| you all will be preheating |
| they will be preheating |
|
| I will have preheated |
| you will have preheated |
| he/she/it will have preheated |
| we will have preheated |
| you all will have preheated |
| they will have preheated |
|
| I will have been preheating |
| you will have been preheating |
| he/she/it will have been preheating |
| we will have been preheating |
| you all will have been preheating |
| they will have been preheating |
|
