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