I can burn you can burn he can burn we can burn you can burn they can burn
Forma com V-ing
I can be burning you can be burning he can be burning we can be burning you can be burning they can be burning
Perfeito
I can have burned you can have burned he can have burned we can have burned you can have burned they can have burned
Perfeito com V-ing
I can have been burning you can have been burning he can have been burning we can have been burning you can have been burning they can have been burning
Negação
Forma simple
I can't burn you can't burn he can't burn we can't burn you can't burn they can't burn
Forma com V-ing
I can't be burning you can't be burning he can't be burning we can't be burning you can't be burning they can't be burning
Perfeito
I can't have burned you can't have burned he can't have burned we can't have burned you can't have burned they can't have burned
Perfeito com V-ing
I can't have been burning you can't have been burning he can't have been burning we can't have been burning you can't have been burning they can't have been burning
Forma interrogativa
Forma simple
can I burn? can you burn? can he burn? can we burn? can you burn? can they burn?
Forma com V-ing
can I be burning? can you be burning? can he be burning? can we be burning? can you be burning? can they be burning?
Perfeito
can I have burned? can you have burned? can he have burned? can we have burned? can you have burned? can they have burned?
Perfeito com V-ing
can I have been burning? can you have been burning? can he have been burning? can we have been burning? can you have been burning? can they have been burning?
Forma interro-Negação
Forma simple
can't I burn? can't you burn? can't he burn? can't we burn? can't you burn? can't they burn?
Forma com V-ing
can't I be burning? can't you be burning? can't he be burning? can't we be burning? can't you be burning? can't they be burning?
Perfeito
can't I have burned? can't you have burned? can't he have burned? can't we have burned? can't you have burned? can't they have burned?
Perfeito com V-ing
can't I have been burning? can't you have been burning? can't he have been burning? can't we have been burning? can't you have been burning? can't they have been burning?