must refrain
Verbe régulier : refrain - refrained- refrained
Traduction française : s'absentir de (faire) quelque chose 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must refrain
you must refrain
he must refrain
we must refrain
you must refrain
they must refrain 	I must be refraining
you must be refraining
he must be refraining
we must be refraining
you must be refraining
they must be refraining	I must have refrained
you must have refrained
he must have refrained
we must have refrained
you must have refrained
they must have refrained	I must have been refraining
you must have been refraining
he must have been refraining
we must have been refraining
you must have been refraining
they must have been refraining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not refrain
you must not refrain
he must not refrain
we must not refrain
you must not refrain
they must not refrain 	I must not be refraining
you must not be refraining
he must not be refraining
we must not be refraining
you must not be refraining
they must not be refraining	I must not have refrained
you must not have refrained
he must not have refrained
we must not have refrained
you must not have refrained
they must not have refrained	I must not have been refraining
you must not have been refraining
he must not have been refraining
we must not have been refraining
you must not have been refraining
they must not have been refraining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I refrain?
must you refrain?
must he refrain?
must we refrain?
must you refrain?
must they refrain? 	must I be refraining?
must you be refraining?
must he be refraining?
must we be refraining?
must you be refraining?
must they be refraining? 	must I have refrained?
must you have refrained?
must he have refrained?
must we have refrained?
must you have refrained?
must they have refrained? 	must I have been refraining?
must you have been refraining?
must he have been refraining?
must we have been refraining?
must you have been refraining?
must they have been refraining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not refrain?
must you not refrain?
must he not refrain?
must we not refrain?
must you not refrain?
must they not refrain? 	must I not be refraining?
must you not be refraining?
must he not be refraining?
must we not be refraining?
must you not be refraining?
must they not be refraining? 	must I not have refrained?
must you not have refrained?
must he not have refrained?
must we not have refrained?
must you not have refrained?
must they not have refrained? 	must I not have been refraining?
must you not have been refraining?
must he not have been refraining?
must we not have been refraining?
must you not have been refraining?
must they not have been refraining?