could teach
Verbo irregolare: teach - taught- taught

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could teach
you could teach
he could teach
we could teach
you could teach
they could teach 	I could be teaching
you could be teaching
he could be teaching
we could be teaching
you could be teaching
they could be teaching	I could have taught
you could have taught
he could have taught
we could have taught
you could have taught
they could have taught	I could have been teaching
you could have been teaching
he could have been teaching
we could have been teaching
you could have been teaching
they could have been teaching	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not teach
you could not teach
he could not teach
we could not teach
you could not teach
they could not teach 	I could not be teaching
you could not be teaching
he could not be teaching
we could not be teaching
you could not be teaching
they could not be teaching	I could not have taught
you could not have taught
he could not have taught
we could not have taught
you could not have taught
they could not have taught	I could not have been teaching
you could not have been teaching
he could not have been teaching
we could not have been teaching
you could not have been teaching
they could not have been teaching	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I teach?
could you teach?
could he teach?
could we teach?
could you teach?
could they teach? 	could I be teaching?
could you be teaching?
could he be teaching?
could we be teaching?
could you be teaching?
could they be teaching? 	could I have taught?
could you have taught?
could he have taught?
could we have taught?
could you have taught?
could they have taught? 	could I have been teaching?
could you have been teaching?
could he have been teaching?
could we have been teaching?
could you have been teaching?
could they have been teaching? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not teach?
could you not teach?
could he not teach?
could we not teach?
could you not teach?
could they not teach? 	could I not be teaching?
could you not be teaching?
could he not be teaching?
could we not be teaching?
could you not be teaching?
could they not be teaching? 	could I not have taught?
could you not have taught?
could he not have taught?
could we not have taught?
could you not have taught?
could they not have taught? 	could I not have been teaching?
could you not have been teaching?
could he not have been teaching?
could we not have been teaching?
could you not have been teaching?
could they not have been teaching?