must joke
Verbo regular: joke - joked- joked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must joke
you must joke
she must joke
we must joke
you must joke
they must joke 	I must be joking
you must be joking
she must be joking
we must be joking
you must be joking
they must be joking	I must have joked
you must have joked
she must have joked
we must have joked
you must have joked
they must have joked	I must have been joking
you must have been joking
she must have been joking
we must have been joking
you must have been joking
they must have been joking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't joke
you mustn't joke
she mustn't joke
we mustn't joke
you mustn't joke
they mustn't joke 	I mustn't be joking
you mustn't be joking
she mustn't be joking
we mustn't be joking
you mustn't be joking
they mustn't be joking	I mustn't have joked
you mustn't have joked
she mustn't have joked
we mustn't have joked
you mustn't have joked
they mustn't have joked	I mustn't have been joking
you mustn't have been joking
she mustn't have been joking
we mustn't have been joking
you mustn't have been joking
they mustn't have been joking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I joke?
must you joke?
must she joke?
must we joke?
must you joke?
must they joke? 	must I be joking?
must you be joking?
must she be joking?
must we be joking?
must you be joking?
must they be joking? 	must I have joked?
must you have joked?
must she have joked?
must we have joked?
must you have joked?
must they have joked? 	must I have been joking?
must you have been joking?
must she have been joking?
must we have been joking?
must you have been joking?
must they have been joking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I joke?
mustn't you joke?
mustn't she joke?
mustn't we joke?
mustn't you joke?
mustn't they joke? 	mustn't I be joking?
mustn't you be joking?
mustn't she be joking?
mustn't we be joking?
mustn't you be joking?
mustn't they be joking? 	mustn't I have joked?
mustn't you have joked?
mustn't she have joked?
mustn't we have joked?
mustn't you have joked?
mustn't they have joked? 	mustn't I have been joking?
mustn't you have been joking?
mustn't she have been joking?
mustn't we have been joking?
mustn't you have been joking?
mustn't they have been joking?