English verb conjugation MUST BACKFILL

Regular verb: backfill - backfilled - backfilled

Affirmation

Simple form

I must backfill
you must backfill
she must backfill
we must backfill
you must backfill
they must backfill

V-ing form

I must be backfilling
you must be backfilling
she must be backfilling
we must be backfilling
you must be backfilling
they must be backfilling

Perfect

I must have backfilled
you must have backfilled
she must have backfilled
we must have backfilled
you must have backfilled
they must have backfilled

V-ing perfect

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

Negation

Simple form

I must not backfill
you must not backfill
she must not backfill
we must not backfill
you must not backfill
they must not backfill

V-ing form

I must not be backfilling
you must not be backfilling
she must not be backfilling
we must not be backfilling
you must not be backfilling
they must not be backfilling

Perfect

I must not have backfilled
you must not have backfilled
she must not have backfilled
we must not have backfilled
you must not have backfilled
they must not have backfilled

V-ing perfect

I must not have been backfilling
you must not have been backfilling
she must not have been backfilling
we must not have been backfilling
you must not have been backfilling
they must not have been backfilling

Interrogative form

Simple form

must I backfill?
must you backfill?
must she backfill?
must we backfill?
must you backfill?
must they backfill?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

must I not backfill?
must you not backfill?
must she not backfill?
must we not backfill?
must you not backfill?
must they not backfill?

V-ing form

must I not be backfilling?
must you not be backfilling?
must she not be backfilling?
must we not be backfilling?
must you not be backfilling?
must they not be backfilling?

Perfect

must I not have backfilled?
must you not have backfilled?
must she not have backfilled?
must we not have backfilled?
must you not have backfilled?
must they not have backfilled?

V-ing perfect

must I not have been backfilling?
must you not have been backfilling?
must she not have been backfilling?
must we not have been backfilling?
must you not have been backfilling?
must they not have been backfilling?

Page top