I can answer you can answer she can answer we can answer you can answer they can answer
Forma com V-ing
I can be answering you can be answering she can be answering we can be answering you can be answering they can be answering
Perfeito
I can have answered you can have answered she can have answered we can have answered you can have answered they can have answered
Perfeito com V-ing
I can have been answering you can have been answering she can have been answering we can have been answering you can have been answering they can have been answering
Negação
Forma simple
I cannot answer you cannot answer she cannot answer we cannot answer you cannot answer they cannot answer
Forma com V-ing
I cannot be answering you cannot be answering she cannot be answering we cannot be answering you cannot be answering they cannot be answering
Perfeito
I cannot have answered you cannot have answered she cannot have answered we cannot have answered you cannot have answered they cannot have answered
Perfeito com V-ing
I cannot have been answering you cannot have been answering she cannot have been answering we cannot have been answering you cannot have been answering they cannot have been answering
Forma interrogativa
Forma simple
can I answer? can you answer? can she answer? can we answer? can you answer? can they answer?
Forma com V-ing
can I be answering? can you be answering? can she be answering? can we be answering? can you be answering? can they be answering?
Perfeito
can I have answered? can you have answered? can she have answered? can we have answered? can you have answered? can they have answered?
Perfeito com V-ing
can I have been answering? can you have been answering? can she have been answering? can we have been answering? can you have been answering? can they have been answering?
Forma interro-Negação
Forma simple
can I not answer? can you not answer? can she not answer? can we not answer? can you not answer? can they not answer?
Forma com V-ing
can I not be answering? can you not be answering? can she not be answering? can we not be answering? can you not be answering? can they not be answering?
Perfeito
can I not have answered? can you not have answered? can she not have answered? can we not have answered? can you not have answered? can they not have answered?
Perfeito com V-ing
can I not have been answering? can you not have been answering? can she not have been answering? can we not have been answering? can you not have been answering? can they not have been answering?