can sour
Verbo regolare: sour - soured- soured

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I can sour
you can sour
he can sour
we can sour
you can sour
they can sour 	I can be souring
you can be souring
he can be souring
we can be souring
you can be souring
they can be souring	I can have soured
you can have soured
he can have soured
we can have soured
you can have soured
they can have soured	I can have been souring
you can have been souring
he can have been souring
we can have been souring
you can have been souring
they can have been souring	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I cannot sour
you cannot sour
he cannot sour
we cannot sour
you cannot sour
they cannot sour 	I cannot be souring
you cannot be souring
he cannot be souring
we cannot be souring
you cannot be souring
they cannot be souring	I cannot have soured
you cannot have soured
he cannot have soured
we cannot have soured
you cannot have soured
they cannot have soured	I cannot have been souring
you cannot have been souring
he cannot have been souring
we cannot have been souring
you cannot have been souring
they cannot have been souring	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I sour?
can you sour?
can he sour?
can we sour?
can you sour?
can they sour? 	can I be souring?
can you be souring?
can he be souring?
can we be souring?
can you be souring?
can they be souring? 	can I have soured?
can you have soured?
can he have soured?
can we have soured?
can you have soured?
can they have soured? 	can I have been souring?
can you have been souring?
can he have been souring?
can we have been souring?
can you have been souring?
can they have been souring? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I not sour?
can you not sour?
can he not sour?
can we not sour?
can you not sour?
can they not sour? 	can I not be souring?
can you not be souring?
can he not be souring?
can we not be souring?
can you not be souring?
can they not be souring? 	can I not have soured?
can you not have soured?
can he not have soured?
can we not have soured?
can you not have soured?
can they not have soured? 	can I not have been souring?
can you not have been souring?
can he not have been souring?
can we not have been souring?
can you not have been souring?
can they not have been souring?