must belch
Verbe régulier : belch - belched- belched
Traduction française : roter - cracher 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must belch
you must belch
she must belch
we must belch
you must belch
they must belch 	I must be belching
you must be belching
she must be belching
we must be belching
you must be belching
they must be belching	I must have belched
you must have belched
she must have belched
we must have belched
you must have belched
they must have belched	I must have been belching
you must have been belching
she must have been belching
we must have been belching
you must have been belching
they must have been belching	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't belch
you mustn't belch
she mustn't belch
we mustn't belch
you mustn't belch
they mustn't belch 	I mustn't be belching
you mustn't be belching
she mustn't be belching
we mustn't be belching
you mustn't be belching
they mustn't be belching	I mustn't have belched
you mustn't have belched
she mustn't have belched
we mustn't have belched
you mustn't have belched
they mustn't have belched	I mustn't have been belching
you mustn't have been belching
she mustn't have been belching
we mustn't have been belching
you mustn't have been belching
they mustn't have been belching	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I belch?
must you belch?
must she belch?
must we belch?
must you belch?
must they belch? 	must I be belching?
must you be belching?
must she be belching?
must we be belching?
must you be belching?
must they be belching? 	must I have belched?
must you have belched?
must she have belched?
must we have belched?
must you have belched?
must they have belched? 	must I have been belching?
must you have been belching?
must she have been belching?
must we have been belching?
must you have been belching?
must they have been belching? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I belch?
mustn't you belch?
mustn't she belch?
mustn't we belch?
mustn't you belch?
mustn't they belch? 	mustn't I be belching?
mustn't you be belching?
mustn't she be belching?
mustn't we be belching?
mustn't you be belching?
mustn't they be belching? 	mustn't I have belched?
mustn't you have belched?
mustn't she have belched?
mustn't we have belched?
mustn't you have belched?
mustn't they have belched? 	mustn't I have been belching?
mustn't you have been belching?
mustn't she have been belching?
mustn't we have been belching?
mustn't you have been belching?
mustn't they have been belching?