English verb conjugation
MUST IMPRESS

Regular verb: impress - impressed - impressed

Affirmation

Simple form	V-ing form
I must impress you must impress she must impress we must impress you must impress they must impress	I must be impressing you must be impressing she must be impressing we must be impressing you must be impressing they must be impressing
Perfect	V-ing perfect
I must have impressed you must have impressed she must have impressed we must have impressed you must have impressed they must have impressed	I must have been impressing you must have been impressing she must have been impressing we must have been impressing you must have been impressing they must have been impressing

Negation

Simple form	V-ing form
I must not impress you must not impress she must not impress we must not impress you must not impress they must not impress	I must not be impressing you must not be impressing she must not be impressing we must not be impressing you must not be impressing they must not be impressing
Perfect	V-ing perfect
I must not have impressed you must not have impressed she must not have impressed we must not have impressed you must not have impressed they must not have impressed	I must not have been impressing you must not have been impressing she must not have been impressing we must not have been impressing you must not have been impressing they must not have been impressing

Interrogative form

Simple form	V-ing form
must I impress? must you impress? must she impress? must we impress? must you impress? must they impress?	must I be impressing? must you be impressing? must she be impressing? must we be impressing? must you be impressing? must they be impressing?
Perfect	V-ing perfect
must I have impressed? must you have impressed? must she have impressed? must we have impressed? must you have impressed? must they have impressed?	must I have been impressing? must you have been impressing? must she have been impressing? must we have been impressing? must you have been impressing? must they have been impressing?

Interro-negative form

Simple form	V-ing form
must I not impress? must you not impress? must she not impress? must we not impress? must you not impress? must they not impress?	must I not be impressing? must you not be impressing? must she not be impressing? must we not be impressing? must you not be impressing? must they not be impressing?
Perfect	V-ing perfect
must I not have impressed? must you not have impressed? must she not have impressed? must we not have impressed? must you not have impressed? must they not have impressed?	must I not have been impressing? must you not have been impressing? must she not have been impressing? must we not have been impressing? must you not have been impressing? must they not have been impressing?