must beg
Verbo regular: beg - begged- begged

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must beg
you must beg
she must beg
we must beg
you must beg
they must beg 	I must be begging
you must be begging
she must be begging
we must be begging
you must be begging
they must be begging	I must have begged
you must have begged
she must have begged
we must have begged
you must have begged
they must have begged	I must have been begging
you must have been begging
she must have been begging
we must have been begging
you must have been begging
they must have been begging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't beg
you mustn't beg
she mustn't beg
we mustn't beg
you mustn't beg
they mustn't beg 	I mustn't be begging
you mustn't be begging
she mustn't be begging
we mustn't be begging
you mustn't be begging
they mustn't be begging	I mustn't have begged
you mustn't have begged
she mustn't have begged
we mustn't have begged
you mustn't have begged
they mustn't have begged	I mustn't have been begging
you mustn't have been begging
she mustn't have been begging
we mustn't have been begging
you mustn't have been begging
they mustn't have been begging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I beg?
must you beg?
must she beg?
must we beg?
must you beg?
must they beg? 	must I be begging?
must you be begging?
must she be begging?
must we be begging?
must you be begging?
must they be begging? 	must I have begged?
must you have begged?
must she have begged?
must we have begged?
must you have begged?
must they have begged? 	must I have been begging?
must you have been begging?
must she have been begging?
must we have been begging?
must you have been begging?
must they have been begging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I beg?
mustn't you beg?
mustn't she beg?
mustn't we beg?
mustn't you beg?
mustn't they beg? 	mustn't I be begging?
mustn't you be begging?
mustn't she be begging?
mustn't we be begging?
mustn't you be begging?
mustn't they be begging? 	mustn't I have begged?
mustn't you have begged?
mustn't she have begged?
mustn't we have begged?
mustn't you have begged?
mustn't they have begged? 	mustn't I have been begging?
mustn't you have been begging?
mustn't she have been begging?
mustn't we have been begging?
mustn't you have been begging?
mustn't they have been begging?