English verb conjugation MUST UNDERACHIEVE

Regular verb: underachieve - underachieved - underachieved

Affirmation

Simple form

I must underachieve
you must underachieve
he must underachieve
we must underachieve
you must underachieve
they must underachieve

V-ing form

I must be underachieving
you must be underachieving
he must be underachieving
we must be underachieving
you must be underachieving
they must be underachieving

Perfect

I must have underachieved
you must have underachieved
he must have underachieved
we must have underachieved
you must have underachieved
they must have underachieved

V-ing perfect

I must have been underachieving
you must have been underachieving
he must have been underachieving
we must have been underachieving
you must have been underachieving
they must have been underachieving

Negation

Simple form

I must not underachieve
you must not underachieve
he must not underachieve
we must not underachieve
you must not underachieve
they must not underachieve

V-ing form

I must not be underachieving
you must not be underachieving
he must not be underachieving
we must not be underachieving
you must not be underachieving
they must not be underachieving

Perfect

I must not have underachieved
you must not have underachieved
he must not have underachieved
we must not have underachieved
you must not have underachieved
they must not have underachieved

V-ing perfect

I must not have been underachieving
you must not have been underachieving
he must not have been underachieving
we must not have been underachieving
you must not have been underachieving
they must not have been underachieving

Interrogative form

Simple form

must I underachieve?
must you underachieve?
must he underachieve?
must we underachieve?
must you underachieve?
must they underachieve?

V-ing form

must I be underachieving?
must you be underachieving?
must he be underachieving?
must we be underachieving?
must you be underachieving?
must they be underachieving?

Perfect

must I have underachieved?
must you have underachieved?
must he have underachieved?
must we have underachieved?
must you have underachieved?
must they have underachieved?

V-ing perfect

must I have been underachieving?
must you have been underachieving?
must he have been underachieving?
must we have been underachieving?
must you have been underachieving?
must they have been underachieving?

Interro-negative form

Simple form

must I not underachieve?
must you not underachieve?
must he not underachieve?
must we not underachieve?
must you not underachieve?
must they not underachieve?

V-ing form

must I not be underachieving?
must you not be underachieving?
must he not be underachieving?
must we not be underachieving?
must you not be underachieving?
must they not be underachieving?

Perfect

must I not have underachieved?
must you not have underachieved?
must he not have underachieved?
must we not have underachieved?
must you not have underachieved?
must they not have underachieved?

V-ing perfect

must I not have been underachieving?
must you not have been underachieving?
must he not have been underachieving?
must we not have been underachieving?
must you not have been underachieving?
must they not have been underachieving?

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