must abstain
Verbo regolare: abstain - abstained- abstained

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must abstain
you must abstain
he must abstain
we must abstain
you must abstain
they must abstain 	I must be abstaining
you must be abstaining
he must be abstaining
we must be abstaining
you must be abstaining
they must be abstaining	I must have abstained
you must have abstained
he must have abstained
we must have abstained
you must have abstained
they must have abstained	I must have been abstaining
you must have been abstaining
he must have been abstaining
we must have been abstaining
you must have been abstaining
they must have been abstaining	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't abstain
you mustn't abstain
he mustn't abstain
we mustn't abstain
you mustn't abstain
they mustn't abstain 	I mustn't be abstaining
you mustn't be abstaining
he mustn't be abstaining
we mustn't be abstaining
you mustn't be abstaining
they mustn't be abstaining	I mustn't have abstained
you mustn't have abstained
he mustn't have abstained
we mustn't have abstained
you mustn't have abstained
they mustn't have abstained	I mustn't have been abstaining
you mustn't have been abstaining
he mustn't have been abstaining
we mustn't have been abstaining
you mustn't have been abstaining
they mustn't have been abstaining	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I abstain?
must you abstain?
must he abstain?
must we abstain?
must you abstain?
must they abstain? 	must I be abstaining?
must you be abstaining?
must he be abstaining?
must we be abstaining?
must you be abstaining?
must they be abstaining? 	must I have abstained?
must you have abstained?
must he have abstained?
must we have abstained?
must you have abstained?
must they have abstained? 	must I have been abstaining?
must you have been abstaining?
must he have been abstaining?
must we have been abstaining?
must you have been abstaining?
must they have been abstaining? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I abstain?
mustn't you abstain?
mustn't he abstain?
mustn't we abstain?
mustn't you abstain?
mustn't they abstain? 	mustn't I be abstaining?
mustn't you be abstaining?
mustn't he be abstaining?
mustn't we be abstaining?
mustn't you be abstaining?
mustn't they be abstaining? 	mustn't I have abstained?
mustn't you have abstained?
mustn't he have abstained?
mustn't we have abstained?
mustn't you have abstained?
mustn't they have abstained? 	mustn't I have been abstaining?
mustn't you have been abstaining?
mustn't he have been abstaining?
mustn't we have been abstaining?
mustn't you have been abstaining?
mustn't they have been abstaining?