I can worry you can worry she can worry we can worry you can worry they can worry
Forma com V-ing
I can be worrying you can be worrying she can be worrying we can be worrying you can be worrying they can be worrying
Perfeito
I can have worried you can have worried she can have worried we can have worried you can have worried they can have worried
Perfeito com V-ing
I can have been worrying you can have been worrying she can have been worrying we can have been worrying you can have been worrying they can have been worrying
Negação
Forma simple
I can't worry you can't worry she can't worry we can't worry you can't worry they can't worry
Forma com V-ing
I can't be worrying you can't be worrying she can't be worrying we can't be worrying you can't be worrying they can't be worrying
Perfeito
I can't have worried you can't have worried she can't have worried we can't have worried you can't have worried they can't have worried
Perfeito com V-ing
I can't have been worrying you can't have been worrying she can't have been worrying we can't have been worrying you can't have been worrying they can't have been worrying
Forma interrogativa
Forma simple
can I worry? can you worry? can she worry? can we worry? can you worry? can they worry?
Forma com V-ing
can I be worrying? can you be worrying? can she be worrying? can we be worrying? can you be worrying? can they be worrying?
Perfeito
can I have worried? can you have worried? can she have worried? can we have worried? can you have worried? can they have worried?
Perfeito com V-ing
can I have been worrying? can you have been worrying? can she have been worrying? can we have been worrying? can you have been worrying? can they have been worrying?
Forma interro-Negação
Forma simple
can't I worry? can't you worry? can't she worry? can't we worry? can't you worry? can't they worry?
Forma com V-ing
can't I be worrying? can't you be worrying? can't she be worrying? can't we be worrying? can't you be worrying? can't they be worrying?
Perfeito
can't I have worried? can't you have worried? can't she have worried? can't we have worried? can't you have worried? can't they have worried?
Perfeito com V-ing
can't I have been worrying? can't you have been worrying? can't she have been worrying? can't we have been worrying? can't you have been worrying? can't they have been worrying?