English verb conjugation MUST QUIVER

Regular verb: quiver - quivered - quivered

Affirmation

Simple form

I must quiver
you must quiver
she must quiver
we must quiver
you must quiver
they must quiver

V-ing form

I must be quivering
you must be quivering
she must be quivering
we must be quivering
you must be quivering
they must be quivering

Perfect

I must have quivered
you must have quivered
she must have quivered
we must have quivered
you must have quivered
they must have quivered

V-ing perfect

I must have been quivering
you must have been quivering
she must have been quivering
we must have been quivering
you must have been quivering
they must have been quivering

Negation

Simple form

I mustn't quiver
you mustn't quiver
she mustn't quiver
we mustn't quiver
you mustn't quiver
they mustn't quiver

V-ing form

I mustn't be quivering
you mustn't be quivering
she mustn't be quivering
we mustn't be quivering
you mustn't be quivering
they mustn't be quivering

Perfect

I mustn't have quivered
you mustn't have quivered
she mustn't have quivered
we mustn't have quivered
you mustn't have quivered
they mustn't have quivered

V-ing perfect

I mustn't have been quivering
you mustn't have been quivering
she mustn't have been quivering
we mustn't have been quivering
you mustn't have been quivering
they mustn't have been quivering

Interrogative form

Simple form

must I quiver?
must you quiver?
must she quiver?
must we quiver?
must you quiver?
must they quiver?

V-ing form

must I be quivering?
must you be quivering?
must she be quivering?
must we be quivering?
must you be quivering?
must they be quivering?

Perfect

must I have quivered?
must you have quivered?
must she have quivered?
must we have quivered?
must you have quivered?
must they have quivered?

V-ing perfect

must I have been quivering?
must you have been quivering?
must she have been quivering?
must we have been quivering?
must you have been quivering?
must they have been quivering?

Interro-negative form

Simple form

mustn't I quiver?
mustn't you quiver?
mustn't she quiver?
mustn't we quiver?
mustn't you quiver?
mustn't they quiver?

V-ing form

mustn't I be quivering?
mustn't you be quivering?
mustn't she be quivering?
mustn't we be quivering?
mustn't you be quivering?
mustn't they be quivering?

Perfect

mustn't I have quivered?
mustn't you have quivered?
mustn't she have quivered?
mustn't we have quivered?
mustn't you have quivered?
mustn't they have quivered?

V-ing perfect

mustn't I have been quivering?
mustn't you have been quivering?
mustn't she have been quivering?
mustn't we have been quivering?
mustn't you have been quivering?
mustn't they have been quivering?

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