must sprain
Verbe régulier : sprain - sprained- sprained
Traduction française : fouler - étirer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must sprain
you must sprain
he must sprain
we must sprain
you must sprain
they must sprain 	I must be spraining
you must be spraining
he must be spraining
we must be spraining
you must be spraining
they must be spraining	I must have sprained
you must have sprained
he must have sprained
we must have sprained
you must have sprained
they must have sprained	I must have been spraining
you must have been spraining
he must have been spraining
we must have been spraining
you must have been spraining
they must have been spraining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't sprain
you mustn't sprain
he mustn't sprain
we mustn't sprain
you mustn't sprain
they mustn't sprain 	I mustn't be spraining
you mustn't be spraining
he mustn't be spraining
we mustn't be spraining
you mustn't be spraining
they mustn't be spraining	I mustn't have sprained
you mustn't have sprained
he mustn't have sprained
we mustn't have sprained
you mustn't have sprained
they mustn't have sprained	I mustn't have been spraining
you mustn't have been spraining
he mustn't have been spraining
we mustn't have been spraining
you mustn't have been spraining
they mustn't have been spraining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I sprain?
must you sprain?
must he sprain?
must we sprain?
must you sprain?
must they sprain? 	must I be spraining?
must you be spraining?
must he be spraining?
must we be spraining?
must you be spraining?
must they be spraining? 	must I have sprained?
must you have sprained?
must he have sprained?
must we have sprained?
must you have sprained?
must they have sprained? 	must I have been spraining?
must you have been spraining?
must he have been spraining?
must we have been spraining?
must you have been spraining?
must they have been spraining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I sprain?
mustn't you sprain?
mustn't he sprain?
mustn't we sprain?
mustn't you sprain?
mustn't they sprain? 	mustn't I be spraining?
mustn't you be spraining?
mustn't he be spraining?
mustn't we be spraining?
mustn't you be spraining?
mustn't they be spraining? 	mustn't I have sprained?
mustn't you have sprained?
mustn't he have sprained?
mustn't we have sprained?
mustn't you have sprained?
mustn't they have sprained? 	mustn't I have been spraining?
mustn't you have been spraining?
mustn't he have been spraining?
mustn't we have been spraining?
mustn't you have been spraining?
mustn't they have been spraining?