can sour
Verbe régulier : sour - soured- soured
Traduction française : surir - aigrir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can sour
you can sour
she can sour
we can sour
you can sour
they can sour 	I can be souring
you can be souring
she can be souring
we can be souring
you can be souring
they can be souring	I can have soured
you can have soured
she 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
she can have been souring
we can have been souring
you can have been souring
they can have been souring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot sour
you cannot sour
she cannot sour
we cannot sour
you cannot sour
they cannot sour 	I cannot be souring
you cannot be souring
she cannot be souring
we cannot be souring
you cannot be souring
they cannot be souring	I cannot have soured
you cannot have soured
she 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
she cannot have been souring
we cannot have been souring
you cannot have been souring
they cannot have been souring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I sour?
can you sour?
can she sour?
can we sour?
can you sour?
can they sour? 	can I be souring?
can you be souring?
can she be souring?
can we be souring?
can you be souring?
can they be souring? 	can I have soured?
can you have soured?
can she 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 she have been souring?
can we have been souring?
can you have been souring?
can they have been souring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not sour?
can you not sour?
can she 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 she 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 she 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 she not have been souring?
can we not have been souring?
can you not have been souring?
can they not have been souring?