could help
Verbo regular: help - helped- helped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could help
you could help
he could help
we could help
you could help
they could help 	I could be helping
you could be helping
he could be helping
we could be helping
you could be helping
they could be helping	I could have helped
you could have helped
he could have helped
we could have helped
you could have helped
they could have helped	I could have been helping
you could have been helping
he could have been helping
we could have been helping
you could have been helping
they could have been helping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't help
you couldn't help
he couldn't help
we couldn't help
you couldn't help
they couldn't help 	I couldn't be helping
you couldn't be helping
he couldn't be helping
we couldn't be helping
you couldn't be helping
they couldn't be helping	I couldn't have helped
you couldn't have helped
he couldn't have helped
we couldn't have helped
you couldn't have helped
they couldn't have helped	I couldn't have been helping
you couldn't have been helping
he couldn't have been helping
we couldn't have been helping
you couldn't have been helping
they couldn't have been helping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I help?
could you help?
could he help?
could we help?
could you help?
could they help? 	could I be helping?
could you be helping?
could he be helping?
could we be helping?
could you be helping?
could they be helping? 	could I have helped?
could you have helped?
could he have helped?
could we have helped?
could you have helped?
could they have helped? 	could I have been helping?
could you have been helping?
could he have been helping?
could we have been helping?
could you have been helping?
could they have been helping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I help?
couldn't you help?
couldn't he help?
couldn't we help?
couldn't you help?
couldn't they help? 	couldn't I be helping?
couldn't you be helping?
couldn't he be helping?
couldn't we be helping?
couldn't you be helping?
couldn't they be helping? 	couldn't I have helped?
couldn't you have helped?
couldn't he have helped?
couldn't we have helped?
couldn't you have helped?
couldn't they have helped? 	couldn't I have been helping?
couldn't you have been helping?
couldn't he have been helping?
couldn't we have been helping?
couldn't you have been helping?
couldn't they have been helping?