I can use you can use she can use we can use you can use they can use
Forma com V-ing
I can be using you can be using she can be using we can be using you can be using they can be using
Perfeito
I can have used you can have used she can have used we can have used you can have used they can have used
Perfeito com V-ing
I can have been using you can have been using she can have been using we can have been using you can have been using they can have been using
Negação
Forma simple
I cannot use you cannot use she cannot use we cannot use you cannot use they cannot use
Forma com V-ing
I cannot be using you cannot be using she cannot be using we cannot be using you cannot be using they cannot be using
Perfeito
I cannot have used you cannot have used she cannot have used we cannot have used you cannot have used they cannot have used
Perfeito com V-ing
I cannot have been using you cannot have been using she cannot have been using we cannot have been using you cannot have been using they cannot have been using
Forma interrogativa
Forma simple
can I use? can you use? can she use? can we use? can you use? can they use?
Forma com V-ing
can I be using? can you be using? can she be using? can we be using? can you be using? can they be using?
Perfeito
can I have used? can you have used? can she have used? can we have used? can you have used? can they have used?
Perfeito com V-ing
can I have been using? can you have been using? can she have been using? can we have been using? can you have been using? can they have been using?
Forma interro-Negação
Forma simple
can I not use? can you not use? can she not use? can we not use? can you not use? can they not use?
Forma com V-ing
can I not be using? can you not be using? can she not be using? can we not be using? can you not be using? can they not be using?
Perfeito
can I not have used? can you not have used? can she not have used? can we not have used? can you not have used? can they not have used?
Perfeito com V-ing
can I not have been using? can you not have been using? can she not have been using? can we not have been using? can you not have been using? can they not have been using?