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English verb conjugation MUST SIGH

Regular verb: sigh - sighed - sighed


Affirmation

Simple form
I must sigh
you must sigh
he must sigh
we must sigh
you must sigh
they must sigh
V-ing form
I must be sighing
you must be sighing
he must be sighing
we must be sighing
you must be sighing
they must be sighing
Perfect
I must have sighed
you must have sighed
he must have sighed
we must have sighed
you must have sighed
they must have sighed
V-ing perfect
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

Negation

Simple form
I must not sigh
you must not sigh
he must not sigh
we must not sigh
you must not sigh
they must not sigh
V-ing form
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
Perfect
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
V-ing perfect
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

Interrogative form

Simple form
must I sigh?
must you sigh?
must he sigh?
must we sigh?
must you sigh?
must they sigh?
V-ing form
must I be sighing?
must you be sighing?
must he be sighing?
must we be sighing?
must you be sighing?
must they be sighing?
Perfect
must I have sighed?
must you have sighed?
must he have sighed?
must we have sighed?
must you have sighed?
must they have sighed?
V-ing perfect
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?

Interro-negative form

Simple form
must I not sigh?
must you not sigh?
must he not sigh?
must we not sigh?
must you not sigh?
must they not sigh?
V-ing form
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?
Perfect
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?
V-ing perfect
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?