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