could scratch
Verbo regolare: scratch - scratched- scratched

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could scratch
you could scratch
he could scratch
we could scratch
you could scratch
they could scratch 	I could be scratching
you could be scratching
he could be scratching
we could be scratching
you could be scratching
they could be scratching	I could have scratched
you could have scratched
he could have scratched
we could have scratched
you could have scratched
they could have scratched	I could have been scratching
you could have been scratching
he could have been scratching
we could have been scratching
you could have been scratching
they could have been scratching	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't scratch
you couldn't scratch
he couldn't scratch
we couldn't scratch
you couldn't scratch
they couldn't scratch 	I couldn't be scratching
you couldn't be scratching
he couldn't be scratching
we couldn't be scratching
you couldn't be scratching
they couldn't be scratching	I couldn't have scratched
you couldn't have scratched
he couldn't have scratched
we couldn't have scratched
you couldn't have scratched
they couldn't have scratched	I couldn't have been scratching
you couldn't have been scratching
he couldn't have been scratching
we couldn't have been scratching
you couldn't have been scratching
they couldn't have been scratching	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I scratch?
could you scratch?
could he scratch?
could we scratch?
could you scratch?
could they scratch? 	could I be scratching?
could you be scratching?
could he be scratching?
could we be scratching?
could you be scratching?
could they be scratching? 	could I have scratched?
could you have scratched?
could he have scratched?
could we have scratched?
could you have scratched?
could they have scratched? 	could I have been scratching?
could you have been scratching?
could he have been scratching?
could we have been scratching?
could you have been scratching?
could they have been scratching? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I scratch?
couldn't you scratch?
couldn't he scratch?
couldn't we scratch?
couldn't you scratch?
couldn't they scratch? 	couldn't I be scratching?
couldn't you be scratching?
couldn't he be scratching?
couldn't we be scratching?
couldn't you be scratching?
couldn't they be scratching? 	couldn't I have scratched?
couldn't you have scratched?
couldn't he have scratched?
couldn't we have scratched?
couldn't you have scratched?
couldn't they have scratched? 	couldn't I have been scratching?
couldn't you have been scratching?
couldn't he have been scratching?
couldn't we have been scratching?
couldn't you have been scratching?
couldn't they have been scratching?