I can screech you can screech she can screech we can screech you can screech they can screech
Forma con V-ing
I can be screeching you can be screeching she can be screeching we can be screeching you can be screeching they can be screeching
Perfecto
I can have screeched you can have screeched she can have screeched we can have screeched you can have screeched they can have screeched
Perfecto con V-ing
I can have been screeching you can have been screeching she can have been screeching we can have been screeching you can have been screeching they can have been screeching
Negación
Forma simple
I cannot screech you cannot screech she cannot screech we cannot screech you cannot screech they cannot screech
Forma con V-ing
I cannot be screeching you cannot be screeching she cannot be screeching we cannot be screeching you cannot be screeching they cannot be screeching
Perfecto
I cannot have screeched you cannot have screeched she cannot have screeched we cannot have screeched you cannot have screeched they cannot have screeched
Perfecto con V-ing
I cannot have been screeching you cannot have been screeching she cannot have been screeching we cannot have been screeching you cannot have been screeching they cannot have been screeching
Forma interrogativa
Forma simple
can I screech? can you screech? can she screech? can we screech? can you screech? can they screech?
Forma con V-ing
can I be screeching? can you be screeching? can she be screeching? can we be screeching? can you be screeching? can they be screeching?
Perfecto
can I have screeched? can you have screeched? can she have screeched? can we have screeched? can you have screeched? can they have screeched?
Perfecto con V-ing
can I have been screeching? can you have been screeching? can she have been screeching? can we have been screeching? can you have been screeching? can they have been screeching?
Forma interro-negativa
Forma simple
can I not screech? can you not screech? can she not screech? can we not screech? can you not screech? can they not screech?
Forma con V-ing
can I not be screeching? can you not be screeching? can she not be screeching? can we not be screeching? can you not be screeching? can they not be screeching?
Perfecto
can I not have screeched? can you not have screeched? can she not have screeched? can we not have screeched? can you not have screeched? can they not have screeched?
Perfecto con V-ing
can I not have been screeching? can you not have been screeching? can she not have been screeching? can we not have been screeching? can you not have been screeching? can they not have been screeching?