English verb conjugation
MUST SNOWBOARD

Regular verb: snowboard - snowboarded - snowboarded

Affirmation

Simple form	V-ing form
I must snowboard you must snowboard she must snowboard we must snowboard you must snowboard they must snowboard	I must be snowboarding you must be snowboarding she must be snowboarding we must be snowboarding you must be snowboarding they must be snowboarding
Perfect	V-ing perfect
I must have snowboarded you must have snowboarded she must have snowboarded we must have snowboarded you must have snowboarded they must have snowboarded	I must have been snowboarding you must have been snowboarding she must have been snowboarding we must have been snowboarding you must have been snowboarding they must have been snowboarding

Negation

Simple form	V-ing form
I must not snowboard you must not snowboard she must not snowboard we must not snowboard you must not snowboard they must not snowboard	I must not be snowboarding you must not be snowboarding she must not be snowboarding we must not be snowboarding you must not be snowboarding they must not be snowboarding
Perfect	V-ing perfect
I must not have snowboarded you must not have snowboarded she must not have snowboarded we must not have snowboarded you must not have snowboarded they must not have snowboarded	I must not have been snowboarding you must not have been snowboarding she must not have been snowboarding we must not have been snowboarding you must not have been snowboarding they must not have been snowboarding

Interrogative form

Simple form	V-ing form
must I snowboard? must you snowboard? must she snowboard? must we snowboard? must you snowboard? must they snowboard?	must I be snowboarding? must you be snowboarding? must she be snowboarding? must we be snowboarding? must you be snowboarding? must they be snowboarding?
Perfect	V-ing perfect
must I have snowboarded? must you have snowboarded? must she have snowboarded? must we have snowboarded? must you have snowboarded? must they have snowboarded?	must I have been snowboarding? must you have been snowboarding? must she have been snowboarding? must we have been snowboarding? must you have been snowboarding? must they have been snowboarding?

Interro-negative form

Simple form	V-ing form
must I not snowboard? must you not snowboard? must she not snowboard? must we not snowboard? must you not snowboard? must they not snowboard?	must I not be snowboarding? must you not be snowboarding? must she not be snowboarding? must we not be snowboarding? must you not be snowboarding? must they not be snowboarding?
Perfect	V-ing perfect
must I not have snowboarded? must you not have snowboarded? must she not have snowboarded? must we not have snowboarded? must you not have snowboarded? must they not have snowboarded?	must I not have been snowboarding? must you not have been snowboarding? must she not have been snowboarding? must we not have been snowboarding? must you not have been snowboarding? must they not have been snowboarding?