could train
Verbo regular: train - trained- trained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could train
you could train
she could train
we could train
you could train
they could train 	I could be training
you could be training
she could be training
we could be training
you could be training
they could be training	I could have trained
you could have trained
she could have trained
we could have trained
you could have trained
they could have trained	I could have been training
you could have been training
she could have been training
we could have been training
you could have been training
they could have been training	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't train
you couldn't train
she couldn't train
we couldn't train
you couldn't train
they couldn't train 	I couldn't be training
you couldn't be training
she couldn't be training
we couldn't be training
you couldn't be training
they couldn't be training	I couldn't have trained
you couldn't have trained
she couldn't have trained
we couldn't have trained
you couldn't have trained
they couldn't have trained	I couldn't have been training
you couldn't have been training
she couldn't have been training
we couldn't have been training
you couldn't have been training
they couldn't have been training	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I train?
could you train?
could she train?
could we train?
could you train?
could they train? 	could I be training?
could you be training?
could she be training?
could we be training?
could you be training?
could they be training? 	could I have trained?
could you have trained?
could she have trained?
could we have trained?
could you have trained?
could they have trained? 	could I have been training?
could you have been training?
could she have been training?
could we have been training?
could you have been training?
could they have been training? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I train?
couldn't you train?
couldn't she train?
couldn't we train?
couldn't you train?
couldn't they train? 	couldn't I be training?
couldn't you be training?
couldn't she be training?
couldn't we be training?
couldn't you be training?
couldn't they be training? 	couldn't I have trained?
couldn't you have trained?
couldn't she have trained?
couldn't we have trained?
couldn't you have trained?
couldn't they have trained? 	couldn't I have been training?
couldn't you have been training?
couldn't she have been training?
couldn't we have been training?
couldn't you have been training?
couldn't they have been training?