| Present | Past | Future | |
|---|---|---|---|
| I | happen | happened | will happen |
| you | happen | happened | will happen |
| he/she | happens | happened | will happen |
| we | happen | happened | will happen |
| you | happen | happened | will happen |
| they | happen | happened | will happen |
| I | happen |
| you | happen |
| he/she | happens |
| we | happen |
| you | happen |
| they | happen |
| I | happened |
| you | happened |
| he/she | happened |
| we | happened |
| you | happened |
| they | happened |
| I | will happen |
| you | will happen |
| he/she | will happen |
| we | will happen |
| you | will happen |
| they | will happen |
| Present | Past | Future | |
|---|---|---|---|
| I | have happened | had happened | will have happened |
| you | have happened | had happened | will have happened |
| he/she | has happened | had happened | will have happened |
| we | have happened | had happened | will have happened |
| you | have happened | had happened | will have happened |
| they | have happened | had happened | will have happened |
| I | have happened |
| you | have happened |
| he/she | has happened |
| we | have happened |
| you | have happened |
| they | have happened |
| I | had happened |
| you | had happened |
| he/she | had happened |
| we | had happened |
| you | had happened |
| they | had happened |
| I | will have happened |
| you | will have happened |
| he/she | will have happened |
| we | will have happened |
| you | will have happened |
| they | will have happened |
| Imperative | |
|---|---|
| I | - |
| you | happen |
| he/she | - |
| we | - |
| you | happen |
| they | - |
| I | - |
| you | happen |
| he/she | - |
| we | - |
| you | happen |
| they | - |
| Present | Past | Future | |
|---|---|---|---|
| I | am happening | was happening | will be happening |
| you | are happening | were happening | will be happening |
| he/she | is happening | was happening | will be happening |
| we | are happening | were happening | will be happening |
| you | are happening | were happening | will be happening |
| they | are happening | were happening | will be happening |
| I | am happening |
| you | are happening |
| he/she | is happening |
| we | are happening |
| you | are happening |
| they | are happening |
| I | was happening |
| you | were happening |
| he/she | was happening |
| we | were happening |
| you | were happening |
| they | were happening |
| I | will be happening |
| you | will be happening |
| he/she | will be happening |
| we | will be happening |
| you | will be happening |
| they | will be happening |
| Present | Past | Future | |
|---|---|---|---|
| I | have been happening | had been happening | will have been happening |
| you | have been happening | had been happening | will have been happening |
| he/she | has been happening | had been happening | will have been happening |
| we | have been happening | had been happening | will have been happening |
| you | have been happening | had been happening | will have been happening |
| they | have been happening | had been happening | will have been happening |
| I | have been happening |
| you | have been happening |
| he/she | has been happening |
| we | have been happening |
| you | have been happening |
| they | have been happening |
| I | had been happening |
| you | had been happening |
| he/she | had been happening |
| we | had been happening |
| you | had been happening |
| they | had been happening |
| I | will have been happening |
| you | will have been happening |
| he/she | will have been happening |
| we | will have been happening |
| you | will have been happening |
| they | will have been happening |