I could ante you could ante he could ante we could ante you could ante they could ante
Forma com V-ing
I could be anting you could be anting he could be anting we could be anting you could be anting they could be anting
Perfeito
I could have anted you could have anted he could have anted we could have anted you could have anted they could have anted
Perfeito com V-ing
I could have been anting you could have been anting he could have been anting we could have been anting you could have been anting they could have been anting
Negação
Forma simple
I could not ante you could not ante he could not ante we could not ante you could not ante they could not ante
Forma com V-ing
I could not be anting you could not be anting he could not be anting we could not be anting you could not be anting they could not be anting
Perfeito
I could not have anted you could not have anted he could not have anted we could not have anted you could not have anted they could not have anted
Perfeito com V-ing
I could not have been anting you could not have been anting he could not have been anting we could not have been anting you could not have been anting they could not have been anting
Forma interrogativa
Forma simple
could I ante? could you ante? could he ante? could we ante? could you ante? could they ante?
Forma com V-ing
could I be anting? could you be anting? could he be anting? could we be anting? could you be anting? could they be anting?
Perfeito
could I have anted? could you have anted? could he have anted? could we have anted? could you have anted? could they have anted?
Perfeito com V-ing
could I have been anting? could you have been anting? could he have been anting? could we have been anting? could you have been anting? could they have been anting?
Forma interro-Negação
Forma simple
could I not ante? could you not ante? could he not ante? could we not ante? could you not ante? could they not ante?
Forma com V-ing
could I not be anting? could you not be anting? could he not be anting? could we not be anting? could you not be anting? could they not be anting?
Perfeito
could I not have anted? could you not have anted? could he not have anted? could we not have anted? could you not have anted? could they not have anted?
Perfeito com V-ing
could I not have been anting? could you not have been anting? could he not have been anting? could we not have been anting? could you not have been anting? could they not have been anting?