could last
Verbo regular: last - lasted- lasted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could last
you could last
she could last
we could last
you could last
they could last 	I could be lasting
you could be lasting
she could be lasting
we could be lasting
you could be lasting
they could be lasting	I could have lasted
you could have lasted
she could have lasted
we could have lasted
you could have lasted
they could have lasted	I could have been lasting
you could have been lasting
she could have been lasting
we could have been lasting
you could have been lasting
they could have been lasting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not last
you could not last
she could not last
we could not last
you could not last
they could not last 	I could not be lasting
you could not be lasting
she could not be lasting
we could not be lasting
you could not be lasting
they could not be lasting	I could not have lasted
you could not have lasted
she could not have lasted
we could not have lasted
you could not have lasted
they could not have lasted	I could not have been lasting
you could not have been lasting
she could not have been lasting
we could not have been lasting
you could not have been lasting
they could not have been lasting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I last?
could you last?
could she last?
could we last?
could you last?
could they last? 	could I be lasting?
could you be lasting?
could she be lasting?
could we be lasting?
could you be lasting?
could they be lasting? 	could I have lasted?
could you have lasted?
could she have lasted?
could we have lasted?
could you have lasted?
could they have lasted? 	could I have been lasting?
could you have been lasting?
could she have been lasting?
could we have been lasting?
could you have been lasting?
could they have been lasting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not last?
could you not last?
could she not last?
could we not last?
could you not last?
could they not last? 	could I not be lasting?
could you not be lasting?
could she not be lasting?
could we not be lasting?
could you not be lasting?
could they not be lasting? 	could I not have lasted?
could you not have lasted?
could she not have lasted?
could we not have lasted?
could you not have lasted?
could they not have lasted? 	could I not have been lasting?
could you not have been lasting?
could she not have been lasting?
could we not have been lasting?
could you not have been lasting?
could they not have been lasting?