could fasten
Regelmä&szlig;iges Verb: fasten - fastened- fastened

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could fasten
you could fasten
she could fasten
we could fasten
you could fasten
they could fasten 	I could be fastening
you could be fastening
she could be fastening
we could be fastening
you could be fastening
they could be fastening	I could have fastened
you could have fastened
she could have fastened
we could have fastened
you could have fastened
they could have fastened	I could have been fastening
you could have been fastening
she could have been fastening
we could have been fastening
you could have been fastening
they could have been fastening	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not fasten
you could not fasten
she could not fasten
we could not fasten
you could not fasten
they could not fasten 	I could not be fastening
you could not be fastening
she could not be fastening
we could not be fastening
you could not be fastening
they could not be fastening	I could not have fastened
you could not have fastened
she could not have fastened
we could not have fastened
you could not have fastened
they could not have fastened	I could not have been fastening
you could not have been fastening
she could not have been fastening
we could not have been fastening
you could not have been fastening
they could not have been fastening	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I fasten?
could you fasten?
could she fasten?
could we fasten?
could you fasten?
could they fasten? 	could I be fastening?
could you be fastening?
could she be fastening?
could we be fastening?
could you be fastening?
could they be fastening? 	could I have fastened?
could you have fastened?
could she have fastened?
could we have fastened?
could you have fastened?
could they have fastened? 	could I have been fastening?
could you have been fastening?
could she have been fastening?
could we have been fastening?
could you have been fastening?
could they have been fastening? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not fasten?
could you not fasten?
could she not fasten?
could we not fasten?
could you not fasten?
could they not fasten? 	could I not be fastening?
could you not be fastening?
could she not be fastening?
could we not be fastening?
could you not be fastening?
could they not be fastening? 	could I not have fastened?
could you not have fastened?
could she not have fastened?
could we not have fastened?
could you not have fastened?
could they not have fastened? 	could I not have been fastening?
could you not have been fastening?
could she not have been fastening?
could we not have been fastening?
could you not have been fastening?
could they not have been fastening?