must explain
Verbe régulier : explain - explained- explained
Traduction française : expliquer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must explain
you must explain
she must explain
we must explain
you must explain
they must explain 	I must be explaining
you must be explaining
she must be explaining
we must be explaining
you must be explaining
they must be explaining	I must have explained
you must have explained
she must have explained
we must have explained
you must have explained
they must have explained	I must have been explaining
you must have been explaining
she must have been explaining
we must have been explaining
you must have been explaining
they must have been explaining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't explain
you mustn't explain
she mustn't explain
we mustn't explain
you mustn't explain
they mustn't explain 	I mustn't be explaining
you mustn't be explaining
she mustn't be explaining
we mustn't be explaining
you mustn't be explaining
they mustn't be explaining	I mustn't have explained
you mustn't have explained
she mustn't have explained
we mustn't have explained
you mustn't have explained
they mustn't have explained	I mustn't have been explaining
you mustn't have been explaining
she mustn't have been explaining
we mustn't have been explaining
you mustn't have been explaining
they mustn't have been explaining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I explain?
must you explain?
must she explain?
must we explain?
must you explain?
must they explain? 	must I be explaining?
must you be explaining?
must she be explaining?
must we be explaining?
must you be explaining?
must they be explaining? 	must I have explained?
must you have explained?
must she have explained?
must we have explained?
must you have explained?
must they have explained? 	must I have been explaining?
must you have been explaining?
must she have been explaining?
must we have been explaining?
must you have been explaining?
must they have been explaining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I explain?
mustn't you explain?
mustn't she explain?
mustn't we explain?
mustn't you explain?
mustn't they explain? 	mustn't I be explaining?
mustn't you be explaining?
mustn't she be explaining?
mustn't we be explaining?
mustn't you be explaining?
mustn't they be explaining? 	mustn't I have explained?
mustn't you have explained?
mustn't she have explained?
mustn't we have explained?
mustn't you have explained?
mustn't they have explained? 	mustn't I have been explaining?
mustn't you have been explaining?
mustn't she have been explaining?
mustn't we have been explaining?
mustn't you have been explaining?
mustn't they have been explaining?