must curtain
Verbe régulier : curtain - curtained- curtained
Traduction française : garnir de rideaux 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must curtain
you must curtain
he must curtain
we must curtain
you must curtain
they must curtain 	I must be curtaining
you must be curtaining
he must be curtaining
we must be curtaining
you must be curtaining
they must be curtaining	I must have curtained
you must have curtained
he must have curtained
we must have curtained
you must have curtained
they must have curtained	I must have been curtaining
you must have been curtaining
he must have been curtaining
we must have been curtaining
you must have been curtaining
they must have been curtaining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not curtain
you must not curtain
he must not curtain
we must not curtain
you must not curtain
they must not curtain 	I must not be curtaining
you must not be curtaining
he must not be curtaining
we must not be curtaining
you must not be curtaining
they must not be curtaining	I must not have curtained
you must not have curtained
he must not have curtained
we must not have curtained
you must not have curtained
they must not have curtained	I must not have been curtaining
you must not have been curtaining
he must not have been curtaining
we must not have been curtaining
you must not have been curtaining
they must not have been curtaining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I curtain?
must you curtain?
must he curtain?
must we curtain?
must you curtain?
must they curtain? 	must I be curtaining?
must you be curtaining?
must he be curtaining?
must we be curtaining?
must you be curtaining?
must they be curtaining? 	must I have curtained?
must you have curtained?
must he have curtained?
must we have curtained?
must you have curtained?
must they have curtained? 	must I have been curtaining?
must you have been curtaining?
must he have been curtaining?
must we have been curtaining?
must you have been curtaining?
must they have been curtaining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not curtain?
must you not curtain?
must he not curtain?
must we not curtain?
must you not curtain?
must they not curtain? 	must I not be curtaining?
must you not be curtaining?
must he not be curtaining?
must we not be curtaining?
must you not be curtaining?
must they not be curtaining? 	must I not have curtained?
must you not have curtained?
must he not have curtained?
must we not have curtained?
must you not have curtained?
must they not have curtained? 	must I not have been curtaining?
must you not have been curtaining?
must he not have been curtaining?
must we not have been curtaining?
must you not have been curtaining?
must they not have been curtaining?