must lecture
Verbo regular: lecture - lectured- lectured

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must lecture
you must lecture
he must lecture
we must lecture
you must lecture
they must lecture 	I must be lecturing
you must be lecturing
he must be lecturing
we must be lecturing
you must be lecturing
they must be lecturing	I must have lectured
you must have lectured
he must have lectured
we must have lectured
you must have lectured
they must have lectured	I must have been lecturing
you must have been lecturing
he must have been lecturing
we must have been lecturing
you must have been lecturing
they must have been lecturing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not lecture
you must not lecture
he must not lecture
we must not lecture
you must not lecture
they must not lecture 	I must not be lecturing
you must not be lecturing
he must not be lecturing
we must not be lecturing
you must not be lecturing
they must not be lecturing	I must not have lectured
you must not have lectured
he must not have lectured
we must not have lectured
you must not have lectured
they must not have lectured	I must not have been lecturing
you must not have been lecturing
he must not have been lecturing
we must not have been lecturing
you must not have been lecturing
they must not have been lecturing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I lecture?
must you lecture?
must he lecture?
must we lecture?
must you lecture?
must they lecture? 	must I be lecturing?
must you be lecturing?
must he be lecturing?
must we be lecturing?
must you be lecturing?
must they be lecturing? 	must I have lectured?
must you have lectured?
must he have lectured?
must we have lectured?
must you have lectured?
must they have lectured? 	must I have been lecturing?
must you have been lecturing?
must he have been lecturing?
must we have been lecturing?
must you have been lecturing?
must they have been lecturing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not lecture?
must you not lecture?
must he not lecture?
must we not lecture?
must you not lecture?
must they not lecture? 	must I not be lecturing?
must you not be lecturing?
must he not be lecturing?
must we not be lecturing?
must you not be lecturing?
must they not be lecturing? 	must I not have lectured?
must you not have lectured?
must he not have lectured?
must we not have lectured?
must you not have lectured?
must they not have lectured? 	must I not have been lecturing?
must you not have been lecturing?
must he not have been lecturing?
must we not have been lecturing?
must you not have been lecturing?
must they not have been lecturing?