I can weigh you can weigh he can weigh we can weigh you can weigh they can weigh
Forma con V-ing
I can be weighing you can be weighing he can be weighing we can be weighing you can be weighing they can be weighing
Perfecto
I can have weighed you can have weighed he can have weighed we can have weighed you can have weighed they can have weighed
Perfecto con V-ing
I can have been weighing you can have been weighing he can have been weighing we can have been weighing you can have been weighing they can have been weighing
Negación
Forma simple
I can't weigh you can't weigh he can't weigh we can't weigh you can't weigh they can't weigh
Forma con V-ing
I can't be weighing you can't be weighing he can't be weighing we can't be weighing you can't be weighing they can't be weighing
Perfecto
I can't have weighed you can't have weighed he can't have weighed we can't have weighed you can't have weighed they can't have weighed
Perfecto con V-ing
I can't have been weighing you can't have been weighing he can't have been weighing we can't have been weighing you can't have been weighing they can't have been weighing
Forma interrogativa
Forma simple
can I weigh? can you weigh? can he weigh? can we weigh? can you weigh? can they weigh?
Forma con V-ing
can I be weighing? can you be weighing? can he be weighing? can we be weighing? can you be weighing? can they be weighing?
Perfecto
can I have weighed? can you have weighed? can he have weighed? can we have weighed? can you have weighed? can they have weighed?
Perfecto con V-ing
can I have been weighing? can you have been weighing? can he have been weighing? can we have been weighing? can you have been weighing? can they have been weighing?
Forma interro-negativa
Forma simple
can't I weigh? can't you weigh? can't he weigh? can't we weigh? can't you weigh? can't they weigh?
Forma con V-ing
can't I be weighing? can't you be weighing? can't he be weighing? can't we be weighing? can't you be weighing? can't they be weighing?
Perfecto
can't I have weighed? can't you have weighed? can't he have weighed? can't we have weighed? can't you have weighed? can't they have weighed?
Perfecto con V-ing
can't I have been weighing? can't you have been weighing? can't he have been weighing? can't we have been weighing? can't you have been weighing? can't they have been weighing?