English verb conjugation
MUST SNOWBOARD

Regular verb: snowboard - snowboarded - snowboarded

Affirmation

Simple form	V-ing form
I must snowboard you must snowboard he must snowboard we must snowboard you must snowboard they must snowboard	I must be snowboarding you must be snowboarding he 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 he 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 he 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 he 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 he 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 he 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 he 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 he snowboard? must we snowboard? must you snowboard? must they snowboard?	must I be snowboarding? must you be snowboarding? must he 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 he 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 he 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 he 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 he 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 he 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 he not have been snowboarding? must we not have been snowboarding? must you not have been snowboarding? must they not have been snowboarding?