| Simple | Progressive | Perfect | Progressive |
| Present |
| I acidify |
| you acidify |
| he/she/it acidifies |
| we acidify |
| you all acidify |
| they acidify |
|
| I am acidifying |
| you are acidifying |
| he/she/it is acidifying |
| we are acidifying |
| you all are acidifying |
| they are acidifying |
|
| I have acidified |
| you have acidified |
| he/she/it has acidified |
| we have acidified |
| you all have acidified |
| they have acidified |
|
| I have been acidifying |
| you have been acidifying |
| he/she/it has been acidifying |
| we have been acidifying |
| you all have been acidifying |
| they have been acidifying |
|
| Past |
| I acidified |
| you acidified |
| he/she/it acidified |
| we acidified |
| you all acidified |
| they acidified |
|
| I was acidifying |
| you were acidifying |
| he/she/it was acidifying |
| we were acidifying |
| you all were acidifying |
| they were acidifying |
|
| I had acidified |
| you had acidified |
| he/she/it had acidified |
| we had acidified |
| you all had acidified |
| they had acidified |
|
| I had been acidifying |
| you had been acidifying |
| he/she/it had been acidifying |
| we had been acidifying |
| you all had been acidifying |
| they had been acidifying |
|
| Future |
| I will acidify |
| you will acidify |
| he/she/it will acidify |
| we will acidify |
| you all will acidify |
| they will acidify |
|
| I will be acidifying |
| you will be acidifying |
| he/she/it will be acidifying |
| we are acidifying |
| you all will be acidifying |
| they will be acidifying |
|
| I will have acidified |
| you will have acidified |
| he/she/it will have acidified |
| we will have acidified |
| you all will have acidified |
| they will have acidified |
|
| I will have been acidifying |
| you will have been acidifying |
| he/she/it will have been acidifying |
| we will have been acidifying |
| you all will have been acidifying |
| they will have been acidifying |
|
