must frost
Verbe régulier : frost - frosted- frosted
Traduction française : geler 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must frost
you must frost
he must frost
we must frost
you must frost
they must frost 	I must be frosting
you must be frosting
he must be frosting
we must be frosting
you must be frosting
they must be frosting	I must have frosted
you must have frosted
he must have frosted
we must have frosted
you must have frosted
they must have frosted	I must have been frosting
you must have been frosting
he must have been frosting
we must have been frosting
you must have been frosting
they must have been frosting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not frost
you must not frost
he must not frost
we must not frost
you must not frost
they must not frost 	I must not be frosting
you must not be frosting
he must not be frosting
we must not be frosting
you must not be frosting
they must not be frosting	I must not have frosted
you must not have frosted
he must not have frosted
we must not have frosted
you must not have frosted
they must not have frosted	I must not have been frosting
you must not have been frosting
he must not have been frosting
we must not have been frosting
you must not have been frosting
they must not have been frosting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I frost?
must you frost?
must he frost?
must we frost?
must you frost?
must they frost? 	must I be frosting?
must you be frosting?
must he be frosting?
must we be frosting?
must you be frosting?
must they be frosting? 	must I have frosted?
must you have frosted?
must he have frosted?
must we have frosted?
must you have frosted?
must they have frosted? 	must I have been frosting?
must you have been frosting?
must he have been frosting?
must we have been frosting?
must you have been frosting?
must they have been frosting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not frost?
must you not frost?
must he not frost?
must we not frost?
must you not frost?
must they not frost? 	must I not be frosting?
must you not be frosting?
must he not be frosting?
must we not be frosting?
must you not be frosting?
must they not be frosting? 	must I not have frosted?
must you not have frosted?
must he not have frosted?
must we not have frosted?
must you not have frosted?
must they not have frosted? 	must I not have been frosting?
must you not have been frosting?
must he not have been frosting?
must we not have been frosting?
must you not have been frosting?
must they not have been frosting?