Konjugation des englischen Verbs
CAN HAPPEN

Regelmäßiges Verb: happen - happened - happened

Bestätigung

Einfache Form	Form mit V-ing
- - it can happen - - -	- - it can be happening - - -
Perfekt	Perfekt mit V-ing
- - it can have happened - - -	- - it can have been happening - - -

Negation

Einfache Form	Form mit V-ing
- - it can't happen - - -	- - it can't be happening - - -
Perfekt	Perfekt mit V-ing
- - it can't have happened - - -	- - it can't have been happening - - -

Fragende Form

Einfache Form	Form mit V-ing
- - can it happen? - - -	- - can it be happening? - - -
Perfekt	Perfekt mit V-ing
- - can it have happened? - - -	- - can it have been happening? - - -

Fragende Negation Form

Einfache Form	Form mit V-ing
- - can't it happen? - - -	- - can't it be happening? - - -
Perfekt	Perfekt mit V-ing
- - can't it have happened? - - -	- - can't it have been happening? - - -