| Simple | Progressive | Perfect | Progressive |
| Present |
| I inquire |
| you inquire |
| he/she/it inquires |
| we inquire |
| you all inquire |
| they inquire |
|
| I am inquiring |
| you are inquiring |
| he/she/it is inquiring |
| we are inquiring |
| you all are inquiring |
| they are inquiring |
|
| I have inquired |
| you have inquired |
| he/she/it has inquired |
| we have inquired |
| you all have inquired |
| they have inquired |
|
| I have been inquiring |
| you have been inquiring |
| he/she/it has been inquiring |
| we have been inquiring |
| you all have been inquiring |
| they have been inquiring |
|
| Past |
| I inquired |
| you inquired |
| he/she/it inquired |
| we inquired |
| you all inquired |
| they inquired |
|
| I was inquiring |
| you were inquiring |
| he/she/it was inquiring |
| we were inquiring |
| you all were inquiring |
| they were inquiring |
|
| I had inquired |
| you had inquired |
| he/she/it had inquired |
| we had inquired |
| you all had inquired |
| they had inquired |
|
| I had been inquiring |
| you had been inquiring |
| he/she/it had been inquiring |
| we had been inquiring |
| you all had been inquiring |
| they had been inquiring |
|
| Future |
| I will inquire |
| you will inquire |
| he/she/it will inquire |
| we will inquire |
| you all will inquire |
| they will inquire |
|
| I will be inquiring |
| you will be inquiring |
| he/she/it will be inquiring |
| we are inquiring |
| you all will be inquiring |
| they will be inquiring |
|
| I will have inquired |
| you will have inquired |
| he/she/it will have inquired |
| we will have inquired |
| you all will have inquired |
| they will have inquired |
|
| I will have been inquiring |
| you will have been inquiring |
| he/she/it will have been inquiring |
| we will have been inquiring |
| you all will have been inquiring |
| they will have been inquiring |
|
