I can test you can test he can test we can test you can test they can test
Forma con V-ing
I can be testing you can be testing he can be testing we can be testing you can be testing they can be testing
Perfecto
I can have tested you can have tested he can have tested we can have tested you can have tested they can have tested
Perfecto con V-ing
I can have been testing you can have been testing he can have been testing we can have been testing you can have been testing they can have been testing
Negación
Forma simple
I can't test you can't test he can't test we can't test you can't test they can't test
Forma con V-ing
I can't be testing you can't be testing he can't be testing we can't be testing you can't be testing they can't be testing
Perfecto
I can't have tested you can't have tested he can't have tested we can't have tested you can't have tested they can't have tested
Perfecto con V-ing
I can't have been testing you can't have been testing he can't have been testing we can't have been testing you can't have been testing they can't have been testing
Forma interrogativa
Forma simple
can I test? can you test? can he test? can we test? can you test? can they test?
Forma con V-ing
can I be testing? can you be testing? can he be testing? can we be testing? can you be testing? can they be testing?
Perfecto
can I have tested? can you have tested? can he have tested? can we have tested? can you have tested? can they have tested?
Perfecto con V-ing
can I have been testing? can you have been testing? can he have been testing? can we have been testing? can you have been testing? can they have been testing?
Forma interro-negativa
Forma simple
can't I test? can't you test? can't he test? can't we test? can't you test? can't they test?
Forma con V-ing
can't I be testing? can't you be testing? can't he be testing? can't we be testing? can't you be testing? can't they be testing?
Perfecto
can't I have tested? can't you have tested? can't he have tested? can't we have tested? can't you have tested? can't they have tested?
Perfecto con V-ing
can't I have been testing? can't you have been testing? can't he have been testing? can't we have been testing? can't you have been testing? can't they have been testing?