I can whiten you can whiten he can whiten we can whiten you can whiten they can whiten
Forma com V-ing
I can be whitening you can be whitening he can be whitening we can be whitening you can be whitening they can be whitening
Perfeito
I can have whitened you can have whitened he can have whitened we can have whitened you can have whitened they can have whitened
Perfeito com V-ing
I can have been whitening you can have been whitening he can have been whitening we can have been whitening you can have been whitening they can have been whitening
Negação
Forma simple
I can't whiten you can't whiten he can't whiten we can't whiten you can't whiten they can't whiten
Forma com V-ing
I can't be whitening you can't be whitening he can't be whitening we can't be whitening you can't be whitening they can't be whitening
Perfeito
I can't have whitened you can't have whitened he can't have whitened we can't have whitened you can't have whitened they can't have whitened
Perfeito com V-ing
I can't have been whitening you can't have been whitening he can't have been whitening we can't have been whitening you can't have been whitening they can't have been whitening
Forma interrogativa
Forma simple
can I whiten? can you whiten? can he whiten? can we whiten? can you whiten? can they whiten?
Forma com V-ing
can I be whitening? can you be whitening? can he be whitening? can we be whitening? can you be whitening? can they be whitening?
Perfeito
can I have whitened? can you have whitened? can he have whitened? can we have whitened? can you have whitened? can they have whitened?
Perfeito com V-ing
can I have been whitening? can you have been whitening? can he have been whitening? can we have been whitening? can you have been whitening? can they have been whitening?
Forma interro-Negação
Forma simple
can't I whiten? can't you whiten? can't he whiten? can't we whiten? can't you whiten? can't they whiten?
Forma com V-ing
can't I be whitening? can't you be whitening? can't he be whitening? can't we be whitening? can't you be whitening? can't they be whitening?
Perfeito
can't I have whitened? can't you have whitened? can't he have whitened? can't we have whitened? can't you have whitened? can't they have whitened?
Perfeito com V-ing
can't I have been whitening? can't you have been whitening? can't he have been whitening? can't we have been whitening? can't you have been whitening? can't they have been whitening?