could intervene
Regelmä&szlig;iges Verb: intervene - intervened- intervened

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could intervene
you could intervene
he could intervene
we could intervene
you could intervene
they could intervene 	I could be intervening
you could be intervening
he could be intervening
we could be intervening
you could be intervening
they could be intervening	I could have intervened
you could have intervened
he could have intervened
we could have intervened
you could have intervened
they could have intervened	I could have been intervening
you could have been intervening
he could have been intervening
we could have been intervening
you could have been intervening
they could have been intervening	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not intervene
you could not intervene
he could not intervene
we could not intervene
you could not intervene
they could not intervene 	I could not be intervening
you could not be intervening
he could not be intervening
we could not be intervening
you could not be intervening
they could not be intervening	I could not have intervened
you could not have intervened
he could not have intervened
we could not have intervened
you could not have intervened
they could not have intervened	I could not have been intervening
you could not have been intervening
he could not have been intervening
we could not have been intervening
you could not have been intervening
they could not have been intervening	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I intervene?
could you intervene?
could he intervene?
could we intervene?
could you intervene?
could they intervene? 	could I be intervening?
could you be intervening?
could he be intervening?
could we be intervening?
could you be intervening?
could they be intervening? 	could I have intervened?
could you have intervened?
could he have intervened?
could we have intervened?
could you have intervened?
could they have intervened? 	could I have been intervening?
could you have been intervening?
could he have been intervening?
could we have been intervening?
could you have been intervening?
could they have been intervening? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not intervene?
could you not intervene?
could he not intervene?
could we not intervene?
could you not intervene?
could they not intervene? 	could I not be intervening?
could you not be intervening?
could he not be intervening?
could we not be intervening?
could you not be intervening?
could they not be intervening? 	could I not have intervened?
could you not have intervened?
could he not have intervened?
could we not have intervened?
could you not have intervened?
could they not have intervened? 	could I not have been intervening?
could you not have been intervening?
could he not have been intervening?
could we not have been intervening?
could you not have been intervening?
could they not have been intervening?