must smile
Verbo regular: smile - smiled- smiled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must smile
you must smile
she must smile
we must smile
you must smile
they must smile 	I must be smiling
you must be smiling
she must be smiling
we must be smiling
you must be smiling
they must be smiling	I must have smiled
you must have smiled
she must have smiled
we must have smiled
you must have smiled
they must have smiled	I must have been smiling
you must have been smiling
she must have been smiling
we must have been smiling
you must have been smiling
they must have been smiling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not smile
you must not smile
she must not smile
we must not smile
you must not smile
they must not smile 	I must not be smiling
you must not be smiling
she must not be smiling
we must not be smiling
you must not be smiling
they must not be smiling	I must not have smiled
you must not have smiled
she must not have smiled
we must not have smiled
you must not have smiled
they must not have smiled	I must not have been smiling
you must not have been smiling
she must not have been smiling
we must not have been smiling
you must not have been smiling
they must not have been smiling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I smile?
must you smile?
must she smile?
must we smile?
must you smile?
must they smile? 	must I be smiling?
must you be smiling?
must she be smiling?
must we be smiling?
must you be smiling?
must they be smiling? 	must I have smiled?
must you have smiled?
must she have smiled?
must we have smiled?
must you have smiled?
must they have smiled? 	must I have been smiling?
must you have been smiling?
must she have been smiling?
must we have been smiling?
must you have been smiling?
must they have been smiling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not smile?
must you not smile?
must she not smile?
must we not smile?
must you not smile?
must they not smile? 	must I not be smiling?
must you not be smiling?
must she not be smiling?
must we not be smiling?
must you not be smiling?
must they not be smiling? 	must I not have smiled?
must you not have smiled?
must she not have smiled?
must we not have smiled?
must you not have smiled?
must they not have smiled? 	must I not have been smiling?
must you not have been smiling?
must she not have been smiling?
must we not have been smiling?
must you not have been smiling?
must they not have been smiling?