English verb conjugation
TO HAPPEN
Regular verb: happen - happened - happened
Present | Present continuous | Preterite | Preterite continuous |
| - - does it not happen? - - - | - - is it not happening? - - - | - - did it not happen? - - - | - - was it not happening? - - - |
Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous |
| - - has it not happened? - - - | - - has it not been happening? - - - | - - had it not happened? - - - | - - had it not been happening? - - - |
Future | Future continuous | Future perfect | Future perfect continuous |
| - - will it not happen? - - - | - - will it not be happening? - - - | - - will it not have happened? - - - | - - will it not have been happening? - - - |
Present | Present continuous | Past | Past continuous |
| - - would it not happen? - - - | - - would it not be happening? - - - | - - would it not have happened? - - - | - - would it not have been happening? - - - |
Infinitive | Imperative |
Infinitive | Imperative | ||
| to happen | - - - |
Present | Past | ||
| happening | happened |