I can labor you can labor he can labor we can labor you can labor they can labor
Forma com V-ing
I can be laboring you can be laboring he can be laboring we can be laboring you can be laboring they can be laboring
Perfeito
I can have labored you can have labored he can have labored we can have labored you can have labored they can have labored
Perfeito com V-ing
I can have been laboring you can have been laboring he can have been laboring we can have been laboring you can have been laboring they can have been laboring
Negação
Forma simple
I cannot labor you cannot labor he cannot labor we cannot labor you cannot labor they cannot labor
Forma com V-ing
I cannot be laboring you cannot be laboring he cannot be laboring we cannot be laboring you cannot be laboring they cannot be laboring
Perfeito
I cannot have labored you cannot have labored he cannot have labored we cannot have labored you cannot have labored they cannot have labored
Perfeito com V-ing
I cannot have been laboring you cannot have been laboring he cannot have been laboring we cannot have been laboring you cannot have been laboring they cannot have been laboring
Forma interrogativa
Forma simple
can I labor? can you labor? can he labor? can we labor? can you labor? can they labor?
Forma com V-ing
can I be laboring? can you be laboring? can he be laboring? can we be laboring? can you be laboring? can they be laboring?
Perfeito
can I have labored? can you have labored? can he have labored? can we have labored? can you have labored? can they have labored?
Perfeito com V-ing
can I have been laboring? can you have been laboring? can he have been laboring? can we have been laboring? can you have been laboring? can they have been laboring?
Forma interro-Negação
Forma simple
can I not labor? can you not labor? can he not labor? can we not labor? can you not labor? can they not labor?
Forma com V-ing
can I not be laboring? can you not be laboring? can he not be laboring? can we not be laboring? can you not be laboring? can they not be laboring?
Perfeito
can I not have labored? can you not have labored? can he not have labored? can we not have labored? can you not have labored? can they not have labored?
Perfeito com V-ing
can I not have been laboring? can you not have been laboring? can he not have been laboring? can we not have been laboring? can you not have been laboring? can they not have been laboring?