Regular verb: happen - happened - happened
Simple form | V-ing form |
- - it will happen - - - | - - it will be happening - - - |
Perfect | V-ing perfect |
- - it will have happened - - - | - - it will have been happening - - - |
Simple form | V-ing form |
- - it will not happen - - - | - - it will not be happening - - - |
Perfect | V-ing perfect |
- - it will not have happened - - - | - - it will not have been happening - - - |
Simple form | V-ing form |
- - will it happen? - - - | - - will it be happening? - - - |
Perfect | V-ing perfect |
- - will it have happened? - - - | - - will it have been happening? - - - |
Simple form | V-ing form |
- - will it not happen? - - - | - - will it not be happening? - - - |
Perfect | V-ing perfect |
- - will it not have happened? - - - | - - will it not have been happening? - - - |