must turn
Verbo regular: turn - turned- turned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must turn
you must turn
she must turn
we must turn
you must turn
they must turn 	I must be turning
you must be turning
she must be turning
we must be turning
you must be turning
they must be turning	I must have turned
you must have turned
she must have turned
we must have turned
you must have turned
they must have turned	I must have been turning
you must have been turning
she must have been turning
we must have been turning
you must have been turning
they must have been turning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't turn
you mustn't turn
she mustn't turn
we mustn't turn
you mustn't turn
they mustn't turn 	I mustn't be turning
you mustn't be turning
she mustn't be turning
we mustn't be turning
you mustn't be turning
they mustn't be turning	I mustn't have turned
you mustn't have turned
she mustn't have turned
we mustn't have turned
you mustn't have turned
they mustn't have turned	I mustn't have been turning
you mustn't have been turning
she mustn't have been turning
we mustn't have been turning
you mustn't have been turning
they mustn't have been turning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I turn?
must you turn?
must she turn?
must we turn?
must you turn?
must they turn? 	must I be turning?
must you be turning?
must she be turning?
must we be turning?
must you be turning?
must they be turning? 	must I have turned?
must you have turned?
must she have turned?
must we have turned?
must you have turned?
must they have turned? 	must I have been turning?
must you have been turning?
must she have been turning?
must we have been turning?
must you have been turning?
must they have been turning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I turn?
mustn't you turn?
mustn't she turn?
mustn't we turn?
mustn't you turn?
mustn't they turn? 	mustn't I be turning?
mustn't you be turning?
mustn't she be turning?
mustn't we be turning?
mustn't you be turning?
mustn't they be turning? 	mustn't I have turned?
mustn't you have turned?
mustn't she have turned?
mustn't we have turned?
mustn't you have turned?
mustn't they have turned? 	mustn't I have been turning?
mustn't you have been turning?
mustn't she have been turning?
mustn't we have been turning?
mustn't you have been turning?
mustn't they have been turning?