English verb conjugation MUST STRIVE

Irregular verb: strive - strived - striven

Affirmation

Simple form

I must strive
you must strive
he must strive
we must strive
you must strive
they must strive

V-ing form

I must be striving
you must be striving
he must be striving
we must be striving
you must be striving
they must be striving

Perfect

I must have striven
you must have striven
he must have striven
we must have striven
you must have striven
they must have striven

V-ing perfect

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

Negation

Simple form

I must not strive
you must not strive
he must not strive
we must not strive
you must not strive
they must not strive

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I strive?
must you strive?
must he strive?
must we strive?
must you strive?
must they strive?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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