can fasten
Verbo regolare: fasten - fastened- fastened

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I can fasten
you can fasten
he can fasten
we can fasten
you can fasten
they can fasten 	I can be fastening
you can be fastening
he can be fastening
we can be fastening
you can be fastening
they can be fastening	I can have fastened
you can have fastened
he can have fastened
we can have fastened
you can have fastened
they can have fastened	I can have been fastening
you can have been fastening
he can have been fastening
we can have been fastening
you can have been fastening
they can have been fastening	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I can't fasten
you can't fasten
he can't fasten
we can't fasten
you can't fasten
they can't fasten 	I can't be fastening
you can't be fastening
he can't be fastening
we can't be fastening
you can't be fastening
they can't be fastening	I can't have fastened
you can't have fastened
he can't have fastened
we can't have fastened
you can't have fastened
they can't have fastened	I can't have been fastening
you can't have been fastening
he can't have been fastening
we can't have been fastening
you can't have been fastening
they can't have been fastening	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I fasten?
can you fasten?
can he fasten?
can we fasten?
can you fasten?
can they fasten? 	can I be fastening?
can you be fastening?
can he be fastening?
can we be fastening?
can you be fastening?
can they be fastening? 	can I have fastened?
can you have fastened?
can he have fastened?
can we have fastened?
can you have fastened?
can they have fastened? 	can I have been fastening?
can you have been fastening?
can he have been fastening?
can we have been fastening?
can you have been fastening?
can they have been fastening? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can't I fasten?
can't you fasten?
can't he fasten?
can't we fasten?
can't you fasten?
can't they fasten? 	can't I be fastening?
can't you be fastening?
can't he be fastening?
can't we be fastening?
can't you be fastening?
can't they be fastening? 	can't I have fastened?
can't you have fastened?
can't he have fastened?
can't we have fastened?
can't you have fastened?
can't they have fastened? 	can't I have been fastening?
can't you have been fastening?
can't he have been fastening?
can't we have been fastening?
can't you have been fastening?
can't they have been fastening?