I can smoke you can smoke he can smoke we can smoke you can smoke they can smoke
Forma com V-ing
I can be smoking you can be smoking he can be smoking we can be smoking you can be smoking they can be smoking
Perfeito
I can have smoked you can have smoked he can have smoked we can have smoked you can have smoked they can have smoked
Perfeito com V-ing
I can have been smoking you can have been smoking he can have been smoking we can have been smoking you can have been smoking they can have been smoking
Negação
Forma simple
I can't smoke you can't smoke he can't smoke we can't smoke you can't smoke they can't smoke
Forma com V-ing
I can't be smoking you can't be smoking he can't be smoking we can't be smoking you can't be smoking they can't be smoking
Perfeito
I can't have smoked you can't have smoked he can't have smoked we can't have smoked you can't have smoked they can't have smoked
Perfeito com V-ing
I can't have been smoking you can't have been smoking he can't have been smoking we can't have been smoking you can't have been smoking they can't have been smoking
Forma interrogativa
Forma simple
can I smoke? can you smoke? can he smoke? can we smoke? can you smoke? can they smoke?
Forma com V-ing
can I be smoking? can you be smoking? can he be smoking? can we be smoking? can you be smoking? can they be smoking?
Perfeito
can I have smoked? can you have smoked? can he have smoked? can we have smoked? can you have smoked? can they have smoked?
Perfeito com V-ing
can I have been smoking? can you have been smoking? can he have been smoking? can we have been smoking? can you have been smoking? can they have been smoking?
Forma interro-Negação
Forma simple
can't I smoke? can't you smoke? can't he smoke? can't we smoke? can't you smoke? can't they smoke?
Forma com V-ing
can't I be smoking? can't you be smoking? can't he be smoking? can't we be smoking? can't you be smoking? can't they be smoking?
Perfeito
can't I have smoked? can't you have smoked? can't he have smoked? can't we have smoked? can't you have smoked? can't they have smoked?
Perfeito com V-ing
can't I have been smoking? can't you have been smoking? can't he have been smoking? can't we have been smoking? can't you have been smoking? can't they have been smoking?