must rib
Verbe régulier : rib - ribed- ribed
Traduction française : taquiner - mettre en boîte 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must rib
you must rib
she must rib
we must rib
you must rib
they must rib 	I must be ribing
you must be ribing
she must be ribing
we must be ribing
you must be ribing
they must be ribing	I must have ribed
you must have ribed
she must have ribed
we must have ribed
you must have ribed
they must have ribed	I must have been ribing
you must have been ribing
she must have been ribing
we must have been ribing
you must have been ribing
they must have been ribing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not rib
you must not rib
she must not rib
we must not rib
you must not rib
they must not rib 	I must not be ribing
you must not be ribing
she must not be ribing
we must not be ribing
you must not be ribing
they must not be ribing	I must not have ribed
you must not have ribed
she must not have ribed
we must not have ribed
you must not have ribed
they must not have ribed	I must not have been ribing
you must not have been ribing
she must not have been ribing
we must not have been ribing
you must not have been ribing
they must not have been ribing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I rib?
must you rib?
must she rib?
must we rib?
must you rib?
must they rib? 	must I be ribing?
must you be ribing?
must she be ribing?
must we be ribing?
must you be ribing?
must they be ribing? 	must I have ribed?
must you have ribed?
must she have ribed?
must we have ribed?
must you have ribed?
must they have ribed? 	must I have been ribing?
must you have been ribing?
must she have been ribing?
must we have been ribing?
must you have been ribing?
must they have been ribing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not rib?
must you not rib?
must she not rib?
must we not rib?
must you not rib?
must they not rib? 	must I not be ribing?
must you not be ribing?
must she not be ribing?
must we not be ribing?
must you not be ribing?
must they not be ribing? 	must I not have ribed?
must you not have ribed?
must she not have ribed?
must we not have ribed?
must you not have ribed?
must they not have ribed? 	must I not have been ribing?
must you not have been ribing?
must she not have been ribing?
must we not have been ribing?
must you not have been ribing?
must they not have been ribing?