must roof
Verbe régulier : roof - roofed- roofed
Traduction française : couvrir d'un toit 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must roof
you must roof
he must roof
we must roof
you must roof
they must roof 	I must be roofing
you must be roofing
he must be roofing
we must be roofing
you must be roofing
they must be roofing	I must have roofed
you must have roofed
he must have roofed
we must have roofed
you must have roofed
they must have roofed	I must have been roofing
you must have been roofing
he must have been roofing
we must have been roofing
you must have been roofing
they must have been roofing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not roof
you must not roof
he must not roof
we must not roof
you must not roof
they must not roof 	I must not be roofing
you must not be roofing
he must not be roofing
we must not be roofing
you must not be roofing
they must not be roofing	I must not have roofed
you must not have roofed
he must not have roofed
we must not have roofed
you must not have roofed
they must not have roofed	I must not have been roofing
you must not have been roofing
he must not have been roofing
we must not have been roofing
you must not have been roofing
they must not have been roofing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I roof?
must you roof?
must he roof?
must we roof?
must you roof?
must they roof? 	must I be roofing?
must you be roofing?
must he be roofing?
must we be roofing?
must you be roofing?
must they be roofing? 	must I have roofed?
must you have roofed?
must he have roofed?
must we have roofed?
must you have roofed?
must they have roofed? 	must I have been roofing?
must you have been roofing?
must he have been roofing?
must we have been roofing?
must you have been roofing?
must they have been roofing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not roof?
must you not roof?
must he not roof?
must we not roof?
must you not roof?
must they not roof? 	must I not be roofing?
must you not be roofing?
must he not be roofing?
must we not be roofing?
must you not be roofing?
must they not be roofing? 	must I not have roofed?
must you not have roofed?
must he not have roofed?
must we not have roofed?
must you not have roofed?
must they not have roofed? 	must I not have been roofing?
must you not have been roofing?
must he not have been roofing?
must we not have been roofing?
must you not have been roofing?
must they not have been roofing?