English verb conjugation SHOULD UNDERUSE

Regular verb: underuse - underused - underused

Affirmation

Simple form

I should underuse
you should underuse
he should underuse
we should underuse
you should underuse
they should underuse

V-ing form

I should be underusing
you should be underusing
he should be underusing
we should be underusing
you should be underusing
they should be underusing

Perfect

I should have underused
you should have underused
he should have underused
we should have underused
you should have underused
they should have underused

V-ing perfect

I should have been underusing
you should have been underusing
he should have been underusing
we should have been underusing
you should have been underusing
they should have been underusing

Negation

Simple form

I should not underuse
you should not underuse
he should not underuse
we should not underuse
you should not underuse
they should not underuse

V-ing form

I should not be underusing
you should not be underusing
he should not be underusing
we should not be underusing
you should not be underusing
they should not be underusing

Perfect

I should not have underused
you should not have underused
he should not have underused
we should not have underused
you should not have underused
they should not have underused

V-ing perfect

I should not have been underusing
you should not have been underusing
he should not have been underusing
we should not have been underusing
you should not have been underusing
they should not have been underusing

Interrogative form

Simple form

should I underuse?
should you underuse?
should he underuse?
should we underuse?
should you underuse?
should they underuse?

V-ing form

should I be underusing?
should you be underusing?
should he be underusing?
should we be underusing?
should you be underusing?
should they be underusing?

Perfect

should I have underused?
should you have underused?
should he have underused?
should we have underused?
should you have underused?
should they have underused?

V-ing perfect

should I have been underusing?
should you have been underusing?
should he have been underusing?
should we have been underusing?
should you have been underusing?
should they have been underusing?

Interro-negative form

Simple form

should I not underuse?
should you not underuse?
should he not underuse?
should we not underuse?
should you not underuse?
should they not underuse?

V-ing form

should I not be underusing?
should you not be underusing?
should he not be underusing?
should we not be underusing?
should you not be underusing?
should they not be underusing?

Perfect

should I not have underused?
should you not have underused?
should he not have underused?
should we not have underused?
should you not have underused?
should they not have underused?

V-ing perfect

should I not have been underusing?
should you not have been underusing?
should he not have been underusing?
should we not have been underusing?
should you not have been underusing?
should they not have been underusing?

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