must impress
Regular verb: impress - impressed- impressed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?