must microwave
Regular verb: microwave - microwaved- microwaved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must microwave
you must microwave
she must microwave
we must microwave
you must microwave
they must microwave 	I must be microwaving
you must be microwaving
she must be microwaving
we must be microwaving
you must be microwaving
they must be microwaving	I must have microwaved
you must have microwaved
she must have microwaved
we must have microwaved
you must have microwaved
they must have microwaved	I must have been microwaving
you must have been microwaving
she must have been microwaving
we must have been microwaving
you must have been microwaving
they must have been microwaving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not microwave
you must not microwave
she must not microwave
we must not microwave
you must not microwave
they must not microwave 	I must not be microwaving
you must not be microwaving
she must not be microwaving
we must not be microwaving
you must not be microwaving
they must not be microwaving	I must not have microwaved
you must not have microwaved
she must not have microwaved
we must not have microwaved
you must not have microwaved
they must not have microwaved	I must not have been microwaving
you must not have been microwaving
she must not have been microwaving
we must not have been microwaving
you must not have been microwaving
they must not have been microwaving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I microwave?
must you microwave?
must she microwave?
must we microwave?
must you microwave?
must they microwave? 	must I be microwaving?
must you be microwaving?
must she be microwaving?
must we be microwaving?
must you be microwaving?
must they be microwaving? 	must I have microwaved?
must you have microwaved?
must she have microwaved?
must we have microwaved?
must you have microwaved?
must they have microwaved? 	must I have been microwaving?
must you have been microwaving?
must she have been microwaving?
must we have been microwaving?
must you have been microwaving?
must they have been microwaving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not microwave?
must you not microwave?
must she not microwave?
must we not microwave?
must you not microwave?
must they not microwave? 	must I not be microwaving?
must you not be microwaving?
must she not be microwaving?
must we not be microwaving?
must you not be microwaving?
must they not be microwaving? 	must I not have microwaved?
must you not have microwaved?
must she not have microwaved?
must we not have microwaved?
must you not have microwaved?
must they not have microwaved? 	must I not have been microwaving?
must you not have been microwaving?
must she not have been microwaving?
must we not have been microwaving?
must you not have been microwaving?
must they not have been microwaving?