must specialise
Verbe régulier : specialise - specialised- specialised
Traduction française : (UK) se spécialiser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must specialise
you must specialise
he must specialise
we must specialise
you must specialise
they must specialise 	I must be specialising
you must be specialising
he must be specialising
we must be specialising
you must be specialising
they must be specialising	I must have specialised
you must have specialised
he must have specialised
we must have specialised
you must have specialised
they must have specialised	I must have been specialising
you must have been specialising
he must have been specialising
we must have been specialising
you must have been specialising
they must have been specialising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't specialise
you mustn't specialise
he mustn't specialise
we mustn't specialise
you mustn't specialise
they mustn't specialise 	I mustn't be specialising
you mustn't be specialising
he mustn't be specialising
we mustn't be specialising
you mustn't be specialising
they mustn't be specialising	I mustn't have specialised
you mustn't have specialised
he mustn't have specialised
we mustn't have specialised
you mustn't have specialised
they mustn't have specialised	I mustn't have been specialising
you mustn't have been specialising
he mustn't have been specialising
we mustn't have been specialising
you mustn't have been specialising
they mustn't have been specialising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I specialise?
must you specialise?
must he specialise?
must we specialise?
must you specialise?
must they specialise? 	must I be specialising?
must you be specialising?
must he be specialising?
must we be specialising?
must you be specialising?
must they be specialising? 	must I have specialised?
must you have specialised?
must he have specialised?
must we have specialised?
must you have specialised?
must they have specialised? 	must I have been specialising?
must you have been specialising?
must he have been specialising?
must we have been specialising?
must you have been specialising?
must they have been specialising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I specialise?
mustn't you specialise?
mustn't he specialise?
mustn't we specialise?
mustn't you specialise?
mustn't they specialise? 	mustn't I be specialising?
mustn't you be specialising?
mustn't he be specialising?
mustn't we be specialising?
mustn't you be specialising?
mustn't they be specialising? 	mustn't I have specialised?
mustn't you have specialised?
mustn't he have specialised?
mustn't we have specialised?
mustn't you have specialised?
mustn't they have specialised? 	mustn't I have been specialising?
mustn't you have been specialising?
mustn't he have been specialising?
mustn't we have been specialising?
mustn't you have been specialising?
mustn't they have been specialising?