| Simple | Progressive | Perfect | Progressive |
| Present |
| I ventilate |
| you ventilate |
| he/she/it ventilates |
| we ventilate |
| you all ventilate |
| they ventilate |
|
| I am ventilating |
| you are ventilating |
| he/she/it is ventilating |
| we are ventilating |
| you all are ventilating |
| they are ventilating |
|
| I have ventilated |
| you have ventilated |
| he/she/it has ventilated |
| we have ventilated |
| you all have ventilated |
| they have ventilated |
|
| I have been ventilating |
| you have been ventilating |
| he/she/it has been ventilating |
| we have been ventilating |
| you all have been ventilating |
| they have been ventilating |
|
| Past |
| I ventilated |
| you ventilated |
| he/she/it ventilated |
| we ventilated |
| you all ventilated |
| they ventilated |
|
| I was ventilating |
| you were ventilating |
| he/she/it was ventilating |
| we were ventilating |
| you all were ventilating |
| they were ventilating |
|
| I had ventilated |
| you had ventilated |
| he/she/it had ventilated |
| we had ventilated |
| you all had ventilated |
| they had ventilated |
|
| I had been ventilating |
| you had been ventilating |
| he/she/it had been ventilating |
| we had been ventilating |
| you all had been ventilating |
| they had been ventilating |
|
| Future |
| I will ventilate |
| you will ventilate |
| he/she/it will ventilate |
| we will ventilate |
| you all will ventilate |
| they will ventilate |
|
| I will be ventilating |
| you will be ventilating |
| he/she/it will be ventilating |
| we are ventilating |
| you all will be ventilating |
| they will be ventilating |
|
| I will have ventilated |
| you will have ventilated |
| he/she/it will have ventilated |
| we will have ventilated |
| you all will have ventilated |
| they will have ventilated |
|
| I will have been ventilating |
| you will have been ventilating |
| he/she/it will have been ventilating |
| we will have been ventilating |
| you all will have been ventilating |
| they will have been ventilating |
|
