English verb conjugation MUST UNDERESTIMATE

Regular verb: underestimate - underestimated - underestimated

Affirmation

Simple form

I must underestimate
you must underestimate
she must underestimate
we must underestimate
you must underestimate
they must underestimate

V-ing form

I must be underestimating
you must be underestimating
she must be underestimating
we must be underestimating
you must be underestimating
they must be underestimating

Perfect

I must have underestimated
you must have underestimated
she must have underestimated
we must have underestimated
you must have underestimated
they must have underestimated

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I underestimate?
must you underestimate?
must she underestimate?
must we underestimate?
must you underestimate?
must they underestimate?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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