could lecture
Verbo regular: lecture - lectured- lectured

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could lecture
you could lecture
he could lecture
we could lecture
you could lecture
they could lecture 	I could be lecturing
you could be lecturing
he could be lecturing
we could be lecturing
you could be lecturing
they could be lecturing	I could have lectured
you could have lectured
he could have lectured
we could have lectured
you could have lectured
they could have lectured	I could have been lecturing
you could have been lecturing
he could have been lecturing
we could have been lecturing
you could have been lecturing
they could have been lecturing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not lecture
you could not lecture
he could not lecture
we could not lecture
you could not lecture
they could not lecture 	I could not be lecturing
you could not be lecturing
he could not be lecturing
we could not be lecturing
you could not be lecturing
they could not be lecturing	I could not have lectured
you could not have lectured
he could not have lectured
we could not have lectured
you could not have lectured
they could not have lectured	I could not have been lecturing
you could not have been lecturing
he could not have been lecturing
we could not have been lecturing
you could not have been lecturing
they could not have been lecturing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I lecture?
could you lecture?
could he lecture?
could we lecture?
could you lecture?
could they lecture? 	could I be lecturing?
could you be lecturing?
could he be lecturing?
could we be lecturing?
could you be lecturing?
could they be lecturing? 	could I have lectured?
could you have lectured?
could he have lectured?
could we have lectured?
could you have lectured?
could they have lectured? 	could I have been lecturing?
could you have been lecturing?
could he have been lecturing?
could we have been lecturing?
could you have been lecturing?
could they have been lecturing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not lecture?
could you not lecture?
could he not lecture?
could we not lecture?
could you not lecture?
could they not lecture? 	could I not be lecturing?
could you not be lecturing?
could he not be lecturing?
could we not be lecturing?
could you not be lecturing?
could they not be lecturing? 	could I not have lectured?
could you not have lectured?
could he not have lectured?
could we not have lectured?
could you not have lectured?
could they not have lectured? 	could I not have been lecturing?
could you not have been lecturing?
could he not have been lecturing?
could we not have been lecturing?
could you not have been lecturing?
could they not have been lecturing?