must work
Verbo regular: work - worked- worked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must work
you must work
he must work
we must work
you must work
they must work 	I must be working
you must be working
he must be working
we must be working
you must be working
they must be working	I must have worked
you must have worked
he must have worked
we must have worked
you must have worked
they must have worked	I must have been working
you must have been working
he must have been working
we must have been working
you must have been working
they must have been working	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not work
you must not work
he must not work
we must not work
you must not work
they must not work 	I must not be working
you must not be working
he must not be working
we must not be working
you must not be working
they must not be working	I must not have worked
you must not have worked
he must not have worked
we must not have worked
you must not have worked
they must not have worked	I must not have been working
you must not have been working
he must not have been working
we must not have been working
you must not have been working
they must not have been working	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I work?
must you work?
must he work?
must we work?
must you work?
must they work? 	must I be working?
must you be working?
must he be working?
must we be working?
must you be working?
must they be working? 	must I have worked?
must you have worked?
must he have worked?
must we have worked?
must you have worked?
must they have worked? 	must I have been working?
must you have been working?
must he have been working?
must we have been working?
must you have been working?
must they have been working? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not work?
must you not work?
must he not work?
must we not work?
must you not work?
must they not work? 	must I not be working?
must you not be working?
must he not be working?
must we not be working?
must you not be working?
must they not be working? 	must I not have worked?
must you not have worked?
must he not have worked?
must we not have worked?
must you not have worked?
must they not have worked? 	must I not have been working?
must you not have been working?
must he not have been working?
must we not have been working?
must you not have been working?
must they not have been working?