I can chat you can chat he can chat we can chat you can chat they can chat
Forma com V-ing
I can be chatting you can be chatting he can be chatting we can be chatting you can be chatting they can be chatting
Perfeito
I can have chatted you can have chatted he can have chatted we can have chatted you can have chatted they can have chatted
Perfeito com V-ing
I can have been chatting you can have been chatting he can have been chatting we can have been chatting you can have been chatting they can have been chatting
Negação
Forma simple
I can't chat you can't chat he can't chat we can't chat you can't chat they can't chat
Forma com V-ing
I can't be chatting you can't be chatting he can't be chatting we can't be chatting you can't be chatting they can't be chatting
Perfeito
I can't have chatted you can't have chatted he can't have chatted we can't have chatted you can't have chatted they can't have chatted
Perfeito com V-ing
I can't have been chatting you can't have been chatting he can't have been chatting we can't have been chatting you can't have been chatting they can't have been chatting
Forma interrogativa
Forma simple
can I chat? can you chat? can he chat? can we chat? can you chat? can they chat?
Forma com V-ing
can I be chatting? can you be chatting? can he be chatting? can we be chatting? can you be chatting? can they be chatting?
Perfeito
can I have chatted? can you have chatted? can he have chatted? can we have chatted? can you have chatted? can they have chatted?
Perfeito com V-ing
can I have been chatting? can you have been chatting? can he have been chatting? can we have been chatting? can you have been chatting? can they have been chatting?
Forma interro-Negação
Forma simple
can't I chat? can't you chat? can't he chat? can't we chat? can't you chat? can't they chat?
Forma com V-ing
can't I be chatting? can't you be chatting? can't he be chatting? can't we be chatting? can't you be chatting? can't they be chatting?
Perfeito
can't I have chatted? can't you have chatted? can't he have chatted? can't we have chatted? can't you have chatted? can't they have chatted?
Perfeito com V-ing
can't I have been chatting? can't you have been chatting? can't he have been chatting? can't we have been chatting? can't you have been chatting? can't they have been chatting?