could ski
Verbo regolare: ski - skied- skied

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could ski
you could ski
she could ski
we could ski
you could ski
they could ski 	I could be skiing
you could be skiing
she could be skiing
we could be skiing
you could be skiing
they could be skiing	I could have skied
you could have skied
she could have skied
we could have skied
you could have skied
they could have skied	I could have been skiing
you could have been skiing
she could have been skiing
we could have been skiing
you could have been skiing
they could have been skiing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't ski
you couldn't ski
she couldn't ski
we couldn't ski
you couldn't ski
they couldn't ski 	I couldn't be skiing
you couldn't be skiing
she couldn't be skiing
we couldn't be skiing
you couldn't be skiing
they couldn't be skiing	I couldn't have skied
you couldn't have skied
she couldn't have skied
we couldn't have skied
you couldn't have skied
they couldn't have skied	I couldn't have been skiing
you couldn't have been skiing
she couldn't have been skiing
we couldn't have been skiing
you couldn't have been skiing
they couldn't have been skiing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I ski?
could you ski?
could she ski?
could we ski?
could you ski?
could they ski? 	could I be skiing?
could you be skiing?
could she be skiing?
could we be skiing?
could you be skiing?
could they be skiing? 	could I have skied?
could you have skied?
could she have skied?
could we have skied?
could you have skied?
could they have skied? 	could I have been skiing?
could you have been skiing?
could she have been skiing?
could we have been skiing?
could you have been skiing?
could they have been skiing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I ski?
couldn't you ski?
couldn't she ski?
couldn't we ski?
couldn't you ski?
couldn't they ski? 	couldn't I be skiing?
couldn't you be skiing?
couldn't she be skiing?
couldn't we be skiing?
couldn't you be skiing?
couldn't they be skiing? 	couldn't I have skied?
couldn't you have skied?
couldn't she have skied?
couldn't we have skied?
couldn't you have skied?
couldn't they have skied? 	couldn't I have been skiing?
couldn't you have been skiing?
couldn't she have been skiing?
couldn't we have been skiing?
couldn't you have been skiing?
couldn't they have been skiing?