must sigh
Verbo regolare: sigh - sighed- sighed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must sigh
you must sigh
he must sigh
we must sigh
you must sigh
they must sigh 	I must be sighing
you must be sighing
he must be sighing
we must be sighing
you must be sighing
they must be sighing	I must have sighed
you must have sighed
he must have sighed
we must have sighed
you must have sighed
they must have sighed	I must have been sighing
you must have been sighing
he must have been sighing
we must have been sighing
you must have been sighing
they must have been sighing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not sigh
you must not sigh
he must not sigh
we must not sigh
you must not sigh
they must not sigh 	I must not be sighing
you must not be sighing
he must not be sighing
we must not be sighing
you must not be sighing
they must not be sighing	I must not have sighed
you must not have sighed
he must not have sighed
we must not have sighed
you must not have sighed
they must not have sighed	I must not have been sighing
you must not have been sighing
he must not have been sighing
we must not have been sighing
you must not have been sighing
they must not have been sighing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I sigh?
must you sigh?
must he sigh?
must we sigh?
must you sigh?
must they sigh? 	must I be sighing?
must you be sighing?
must he be sighing?
must we be sighing?
must you be sighing?
must they be sighing? 	must I have sighed?
must you have sighed?
must he have sighed?
must we have sighed?
must you have sighed?
must they have sighed? 	must I have been sighing?
must you have been sighing?
must he have been sighing?
must we have been sighing?
must you have been sighing?
must they have been sighing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not sigh?
must you not sigh?
must he not sigh?
must we not sigh?
must you not sigh?
must they not sigh? 	must I not be sighing?
must you not be sighing?
must he not be sighing?
must we not be sighing?
must you not be sighing?
must they not be sighing? 	must I not have sighed?
must you not have sighed?
must he not have sighed?
must we not have sighed?
must you not have sighed?
must they not have sighed? 	must I not have been sighing?
must you not have been sighing?
must he not have been sighing?
must we not have been sighing?
must you not have been sighing?
must they not have been sighing?