English verb conjugation
MUST SKATE

Regular verb: skate - skated - skated

Affirmation

Simple form	V-ing form
I must skate you must skate she must skate we must skate you must skate they must skate	I must be skating you must be skating she must be skating we must be skating you must be skating they must be skating
Perfect	V-ing perfect
I must have skated you must have skated she must have skated we must have skated you must have skated they must have skated	I must have been skating you must have been skating she must have been skating we must have been skating you must have been skating they must have been skating

Negation

Simple form	V-ing form
I must not skate you must not skate she must not skate we must not skate you must not skate they must not skate	I must not be skating you must not be skating she must not be skating we must not be skating you must not be skating they must not be skating
Perfect	V-ing perfect
I must not have skated you must not have skated she must not have skated we must not have skated you must not have skated they must not have skated	I must not have been skating you must not have been skating she must not have been skating we must not have been skating you must not have been skating they must not have been skating

Interrogative form

Simple form	V-ing form
must I skate? must you skate? must she skate? must we skate? must you skate? must they skate?	must I be skating? must you be skating? must she be skating? must we be skating? must you be skating? must they be skating?
Perfect	V-ing perfect
must I have skated? must you have skated? must she have skated? must we have skated? must you have skated? must they have skated?	must I have been skating? must you have been skating? must she have been skating? must we have been skating? must you have been skating? must they have been skating?

Interro-negative form

Simple form	V-ing form
must I not skate? must you not skate? must she not skate? must we not skate? must you not skate? must they not skate?	must I not be skating? must you not be skating? must she not be skating? must we not be skating? must you not be skating? must they not be skating?
Perfect	V-ing perfect
must I not have skated? must you not have skated? must she not have skated? must we not have skated? must you not have skated? must they not have skated?	must I not have been skating? must you not have been skating? must she not have been skating? must we not have been skating? must you not have been skating? must they not have been skating?