must sham
Verbo regular: sham - shammed- shammed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must sham
you must sham
he must sham
we must sham
you must sham
they must sham 	I must be shamming
you must be shamming
he must be shamming
we must be shamming
you must be shamming
they must be shamming	I must have shammed
you must have shammed
he must have shammed
we must have shammed
you must have shammed
they must have shammed	I must have been shamming
you must have been shamming
he must have been shamming
we must have been shamming
you must have been shamming
they must have been shamming	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't sham
you mustn't sham
he mustn't sham
we mustn't sham
you mustn't sham
they mustn't sham 	I mustn't be shamming
you mustn't be shamming
he mustn't be shamming
we mustn't be shamming
you mustn't be shamming
they mustn't be shamming	I mustn't have shammed
you mustn't have shammed
he mustn't have shammed
we mustn't have shammed
you mustn't have shammed
they mustn't have shammed	I mustn't have been shamming
you mustn't have been shamming
he mustn't have been shamming
we mustn't have been shamming
you mustn't have been shamming
they mustn't have been shamming	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I sham?
must you sham?
must he sham?
must we sham?
must you sham?
must they sham? 	must I be shamming?
must you be shamming?
must he be shamming?
must we be shamming?
must you be shamming?
must they be shamming? 	must I have shammed?
must you have shammed?
must he have shammed?
must we have shammed?
must you have shammed?
must they have shammed? 	must I have been shamming?
must you have been shamming?
must he have been shamming?
must we have been shamming?
must you have been shamming?
must they have been shamming? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I sham?
mustn't you sham?
mustn't he sham?
mustn't we sham?
mustn't you sham?
mustn't they sham? 	mustn't I be shamming?
mustn't you be shamming?
mustn't he be shamming?
mustn't we be shamming?
mustn't you be shamming?
mustn't they be shamming? 	mustn't I have shammed?
mustn't you have shammed?
mustn't he have shammed?
mustn't we have shammed?
mustn't you have shammed?
mustn't they have shammed? 	mustn't I have been shamming?
mustn't you have been shamming?
mustn't he have been shamming?
mustn't we have been shamming?
mustn't you have been shamming?
mustn't they have been shamming?