must specialize
Verbo regolare: specialize - specialized- specialized

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must specialize
you must specialize
he must specialize
we must specialize
you must specialize
they must specialize 	I must be specializing
you must be specializing
he must be specializing
we must be specializing
you must be specializing
they must be specializing	I must have specialized
you must have specialized
he must have specialized
we must have specialized
you must have specialized
they must have specialized	I must have been specializing
you must have been specializing
he must have been specializing
we must have been specializing
you must have been specializing
they must have been specializing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't specialize
you mustn't specialize
he mustn't specialize
we mustn't specialize
you mustn't specialize
they mustn't specialize 	I mustn't be specializing
you mustn't be specializing
he mustn't be specializing
we mustn't be specializing
you mustn't be specializing
they mustn't be specializing	I mustn't have specialized
you mustn't have specialized
he mustn't have specialized
we mustn't have specialized
you mustn't have specialized
they mustn't have specialized	I mustn't have been specializing
you mustn't have been specializing
he mustn't have been specializing
we mustn't have been specializing
you mustn't have been specializing
they mustn't have been specializing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I specialize?
must you specialize?
must he specialize?
must we specialize?
must you specialize?
must they specialize? 	must I be specializing?
must you be specializing?
must he be specializing?
must we be specializing?
must you be specializing?
must they be specializing? 	must I have specialized?
must you have specialized?
must he have specialized?
must we have specialized?
must you have specialized?
must they have specialized? 	must I have been specializing?
must you have been specializing?
must he have been specializing?
must we have been specializing?
must you have been specializing?
must they have been specializing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I specialize?
mustn't you specialize?
mustn't he specialize?
mustn't we specialize?
mustn't you specialize?
mustn't they specialize? 	mustn't I be specializing?
mustn't you be specializing?
mustn't he be specializing?
mustn't we be specializing?
mustn't you be specializing?
mustn't they be specializing? 	mustn't I have specialized?
mustn't you have specialized?
mustn't he have specialized?
mustn't we have specialized?
mustn't you have specialized?
mustn't they have specialized? 	mustn't I have been specializing?
mustn't you have been specializing?
mustn't he have been specializing?
mustn't we have been specializing?
mustn't you have been specializing?
mustn't they have been specializing?