English verb conjugation MUST BUY

Irregular verb: buy - bought - bought

Affirmation

Simple form

I must buy
you must buy
she must buy
we must buy
you must buy
they must buy

V-ing form

I must be buying
you must be buying
she must be buying
we must be buying
you must be buying
they must be buying

Perfect

I must have bought
you must have bought
she must have bought
we must have bought
you must have bought
they must have bought

V-ing perfect

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

Negation

Simple form

I must not buy
you must not buy
she must not buy
we must not buy
you must not buy
they must not buy

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I buy?
must you buy?
must she buy?
must we buy?
must you buy?
must they buy?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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