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