must guard
Verbo regular: guard - guarded- guarded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must guard
you must guard
she must guard
we must guard
you must guard
they must guard 	I must be guarding
you must be guarding
she must be guarding
we must be guarding
you must be guarding
they must be guarding	I must have guarded
you must have guarded
she must have guarded
we must have guarded
you must have guarded
they must have guarded	I must have been guarding
you must have been guarding
she must have been guarding
we must have been guarding
you must have been guarding
they must have been guarding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not guard
you must not guard
she must not guard
we must not guard
you must not guard
they must not guard 	I must not be guarding
you must not be guarding
she must not be guarding
we must not be guarding
you must not be guarding
they must not be guarding	I must not have guarded
you must not have guarded
she must not have guarded
we must not have guarded
you must not have guarded
they must not have guarded	I must not have been guarding
you must not have been guarding
she must not have been guarding
we must not have been guarding
you must not have been guarding
they must not have been guarding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I guard?
must you guard?
must she guard?
must we guard?
must you guard?
must they guard? 	must I be guarding?
must you be guarding?
must she be guarding?
must we be guarding?
must you be guarding?
must they be guarding? 	must I have guarded?
must you have guarded?
must she have guarded?
must we have guarded?
must you have guarded?
must they have guarded? 	must I have been guarding?
must you have been guarding?
must she have been guarding?
must we have been guarding?
must you have been guarding?
must they have been guarding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not guard?
must you not guard?
must she not guard?
must we not guard?
must you not guard?
must they not guard? 	must I not be guarding?
must you not be guarding?
must she not be guarding?
must we not be guarding?
must you not be guarding?
must they not be guarding? 	must I not have guarded?
must you not have guarded?
must she not have guarded?
must we not have guarded?
must you not have guarded?
must they not have guarded? 	must I not have been guarding?
must you not have been guarding?
must she not have been guarding?
must we not have been guarding?
must you not have been guarding?
must they not have been guarding?