I can refuse you can refuse she can refuse we can refuse you can refuse they can refuse
Forma com V-ing
I can be refusing you can be refusing she can be refusing we can be refusing you can be refusing they can be refusing
Perfeito
I can have refused you can have refused she can have refused we can have refused you can have refused they can have refused
Perfeito com V-ing
I can have been refusing you can have been refusing she can have been refusing we can have been refusing you can have been refusing they can have been refusing
Negação
Forma simple
I can't refuse you can't refuse she can't refuse we can't refuse you can't refuse they can't refuse
Forma com V-ing
I can't be refusing you can't be refusing she can't be refusing we can't be refusing you can't be refusing they can't be refusing
Perfeito
I can't have refused you can't have refused she can't have refused we can't have refused you can't have refused they can't have refused
Perfeito com V-ing
I can't have been refusing you can't have been refusing she can't have been refusing we can't have been refusing you can't have been refusing they can't have been refusing
Forma interrogativa
Forma simple
can I refuse? can you refuse? can she refuse? can we refuse? can you refuse? can they refuse?
Forma com V-ing
can I be refusing? can you be refusing? can she be refusing? can we be refusing? can you be refusing? can they be refusing?
Perfeito
can I have refused? can you have refused? can she have refused? can we have refused? can you have refused? can they have refused?
Perfeito com V-ing
can I have been refusing? can you have been refusing? can she have been refusing? can we have been refusing? can you have been refusing? can they have been refusing?
Forma interro-Negação
Forma simple
can't I refuse? can't you refuse? can't she refuse? can't we refuse? can't you refuse? can't they refuse?
Forma com V-ing
can't I be refusing? can't you be refusing? can't she be refusing? can't we be refusing? can't you be refusing? can't they be refusing?
Perfeito
can't I have refused? can't you have refused? can't she have refused? can't we have refused? can't you have refused? can't they have refused?
Perfeito com V-ing
can't I have been refusing? can't you have been refusing? can't she have been refusing? can't we have been refusing? can't you have been refusing? can't they have been refusing?