| Present | Past | Future | |
|---|---|---|---|
| I | prevent | prevented | will prevent |
| you | prevent | prevented | will prevent |
| he/she | prevents | prevented | will prevent |
| we | prevent | prevented | will prevent |
| you | prevent | prevented | will prevent |
| they | prevent | prevented | will prevent |
| I | prevent |
| you | prevent |
| he/she | prevents |
| we | prevent |
| you | prevent |
| they | prevent |
| I | prevented |
| you | prevented |
| he/she | prevented |
| we | prevented |
| you | prevented |
| they | prevented |
| I | will prevent |
| you | will prevent |
| he/she | will prevent |
| we | will prevent |
| you | will prevent |
| they | will prevent |
| Present | Past | Future | |
|---|---|---|---|
| I | have prevented | had prevented | will have prevented |
| you | have prevented | had prevented | will have prevented |
| he/she | has prevented | had prevented | will have prevented |
| we | have prevented | had prevented | will have prevented |
| you | have prevented | had prevented | will have prevented |
| they | have prevented | had prevented | will have prevented |
| I | have prevented |
| you | have prevented |
| he/she | has prevented |
| we | have prevented |
| you | have prevented |
| they | have prevented |
| I | had prevented |
| you | had prevented |
| he/she | had prevented |
| we | had prevented |
| you | had prevented |
| they | had prevented |
| I | will have prevented |
| you | will have prevented |
| he/she | will have prevented |
| we | will have prevented |
| you | will have prevented |
| they | will have prevented |
| Imperative | |
|---|---|
| I | - |
| you | prevent |
| he/she | - |
| we | - |
| you | prevent |
| they | - |
| I | - |
| you | prevent |
| he/she | - |
| we | - |
| you | prevent |
| they | - |
| Present | Past | Future | |
|---|---|---|---|
| I | am preventing | was preventing | will be preventing |
| you | are preventing | were preventing | will be preventing |
| he/she | is preventing | was preventing | will be preventing |
| we | are preventing | were preventing | will be preventing |
| you | are preventing | were preventing | will be preventing |
| they | are preventing | were preventing | will be preventing |
| I | am preventing |
| you | are preventing |
| he/she | is preventing |
| we | are preventing |
| you | are preventing |
| they | are preventing |
| I | was preventing |
| you | were preventing |
| he/she | was preventing |
| we | were preventing |
| you | were preventing |
| they | were preventing |
| I | will be preventing |
| you | will be preventing |
| he/she | will be preventing |
| we | will be preventing |
| you | will be preventing |
| they | will be preventing |
| Present | Past | Future | |
|---|---|---|---|
| I | have been preventing | had been preventing | will have been preventing |
| you | have been preventing | had been preventing | will have been preventing |
| he/she | has been preventing | had been preventing | will have been preventing |
| we | have been preventing | had been preventing | will have been preventing |
| you | have been preventing | had been preventing | will have been preventing |
| they | have been preventing | had been preventing | will have been preventing |
| I | have been preventing |
| you | have been preventing |
| he/she | has been preventing |
| we | have been preventing |
| you | have been preventing |
| they | have been preventing |
| I | had been preventing |
| you | had been preventing |
| he/she | had been preventing |
| we | had been preventing |
| you | had been preventing |
| they | had been preventing |
| I | will have been preventing |
| you | will have been preventing |
| he/she | will have been preventing |
| we | will have been preventing |
| you | will have been preventing |
| they | will have been preventing |