must perch
Verbe régulier : perch - perched- perched
Traduction française : se percher - percher 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must perch
you must perch
she must perch
we must perch
you must perch
they must perch 	I must be perching
you must be perching
she must be perching
we must be perching
you must be perching
they must be perching	I must have perched
you must have perched
she must have perched
we must have perched
you must have perched
they must have perched	I must have been perching
you must have been perching
she must have been perching
we must have been perching
you must have been perching
they must have been perching	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not perch
you must not perch
she must not perch
we must not perch
you must not perch
they must not perch 	I must not be perching
you must not be perching
she must not be perching
we must not be perching
you must not be perching
they must not be perching	I must not have perched
you must not have perched
she must not have perched
we must not have perched
you must not have perched
they must not have perched	I must not have been perching
you must not have been perching
she must not have been perching
we must not have been perching
you must not have been perching
they must not have been perching	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I perch?
must you perch?
must she perch?
must we perch?
must you perch?
must they perch? 	must I be perching?
must you be perching?
must she be perching?
must we be perching?
must you be perching?
must they be perching? 	must I have perched?
must you have perched?
must she have perched?
must we have perched?
must you have perched?
must they have perched? 	must I have been perching?
must you have been perching?
must she have been perching?
must we have been perching?
must you have been perching?
must they have been perching? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not perch?
must you not perch?
must she not perch?
must we not perch?
must you not perch?
must they not perch? 	must I not be perching?
must you not be perching?
must she not be perching?
must we not be perching?
must you not be perching?
must they not be perching? 	must I not have perched?
must you not have perched?
must she not have perched?
must we not have perched?
must you not have perched?
must they not have perched? 	must I not have been perching?
must you not have been perching?
must she not have been perching?
must we not have been perching?
must you not have been perching?
must they not have been perching?