could fast
Verbo regolare: fast - fasted- fasted

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could fast
you could fast
he could fast
we could fast
you could fast
they could fast 	I could be fasting
you could be fasting
he could be fasting
we could be fasting
you could be fasting
they could be fasting	I could have fasted
you could have fasted
he could have fasted
we could have fasted
you could have fasted
they could have fasted	I could have been fasting
you could have been fasting
he could have been fasting
we could have been fasting
you could have been fasting
they could have been fasting	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't fast
you couldn't fast
he couldn't fast
we couldn't fast
you couldn't fast
they couldn't fast 	I couldn't be fasting
you couldn't be fasting
he couldn't be fasting
we couldn't be fasting
you couldn't be fasting
they couldn't be fasting	I couldn't have fasted
you couldn't have fasted
he couldn't have fasted
we couldn't have fasted
you couldn't have fasted
they couldn't have fasted	I couldn't have been fasting
you couldn't have been fasting
he couldn't have been fasting
we couldn't have been fasting
you couldn't have been fasting
they couldn't have been fasting	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I fast?
could you fast?
could he fast?
could we fast?
could you fast?
could they fast? 	could I be fasting?
could you be fasting?
could he be fasting?
could we be fasting?
could you be fasting?
could they be fasting? 	could I have fasted?
could you have fasted?
could he have fasted?
could we have fasted?
could you have fasted?
could they have fasted? 	could I have been fasting?
could you have been fasting?
could he have been fasting?
could we have been fasting?
could you have been fasting?
could they have been fasting? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I fast?
couldn't you fast?
couldn't he fast?
couldn't we fast?
couldn't you fast?
couldn't they fast? 	couldn't I be fasting?
couldn't you be fasting?
couldn't he be fasting?
couldn't we be fasting?
couldn't you be fasting?
couldn't they be fasting? 	couldn't I have fasted?
couldn't you have fasted?
couldn't he have fasted?
couldn't we have fasted?
couldn't you have fasted?
couldn't they have fasted? 	couldn't I have been fasting?
couldn't you have been fasting?
couldn't he have been fasting?
couldn't we have been fasting?
couldn't you have been fasting?
couldn't they have been fasting?