I can ponder you can ponder he can ponder we can ponder you can ponder they can ponder
Forma con V-ing
I can be pondering you can be pondering he can be pondering we can be pondering you can be pondering they can be pondering
Perfecto
I can have pondered you can have pondered he can have pondered we can have pondered you can have pondered they can have pondered
Perfecto con V-ing
I can have been pondering you can have been pondering he can have been pondering we can have been pondering you can have been pondering they can have been pondering
Negación
Forma simple
I cannot ponder you cannot ponder he cannot ponder we cannot ponder you cannot ponder they cannot ponder
Forma con V-ing
I cannot be pondering you cannot be pondering he cannot be pondering we cannot be pondering you cannot be pondering they cannot be pondering
Perfecto
I cannot have pondered you cannot have pondered he cannot have pondered we cannot have pondered you cannot have pondered they cannot have pondered
Perfecto con V-ing
I cannot have been pondering you cannot have been pondering he cannot have been pondering we cannot have been pondering you cannot have been pondering they cannot have been pondering
Forma interrogativa
Forma simple
can I ponder? can you ponder? can he ponder? can we ponder? can you ponder? can they ponder?
Forma con V-ing
can I be pondering? can you be pondering? can he be pondering? can we be pondering? can you be pondering? can they be pondering?
Perfecto
can I have pondered? can you have pondered? can he have pondered? can we have pondered? can you have pondered? can they have pondered?
Perfecto con V-ing
can I have been pondering? can you have been pondering? can he have been pondering? can we have been pondering? can you have been pondering? can they have been pondering?
Forma interro-negativa
Forma simple
can I not ponder? can you not ponder? can he not ponder? can we not ponder? can you not ponder? can they not ponder?
Forma con V-ing
can I not be pondering? can you not be pondering? can he not be pondering? can we not be pondering? can you not be pondering? can they not be pondering?
Perfecto
can I not have pondered? can you not have pondered? can he not have pondered? can we not have pondered? can you not have pondered? can they not have pondered?
Perfecto con V-ing
can I not have been pondering? can you not have been pondering? can he not have been pondering? can we not have been pondering? can you not have been pondering? can they not have been pondering?