must nail
Verbo regular: nail - nailed- nailed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must nail
you must nail
he must nail
we must nail
you must nail
they must nail 	I must be nailing
you must be nailing
he must be nailing
we must be nailing
you must be nailing
they must be nailing	I must have nailed
you must have nailed
he must have nailed
we must have nailed
you must have nailed
they must have nailed	I must have been nailing
you must have been nailing
he must have been nailing
we must have been nailing
you must have been nailing
they must have been nailing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't nail
you mustn't nail
he mustn't nail
we mustn't nail
you mustn't nail
they mustn't nail 	I mustn't be nailing
you mustn't be nailing
he mustn't be nailing
we mustn't be nailing
you mustn't be nailing
they mustn't be nailing	I mustn't have nailed
you mustn't have nailed
he mustn't have nailed
we mustn't have nailed
you mustn't have nailed
they mustn't have nailed	I mustn't have been nailing
you mustn't have been nailing
he mustn't have been nailing
we mustn't have been nailing
you mustn't have been nailing
they mustn't have been nailing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I nail?
must you nail?
must he nail?
must we nail?
must you nail?
must they nail? 	must I be nailing?
must you be nailing?
must he be nailing?
must we be nailing?
must you be nailing?
must they be nailing? 	must I have nailed?
must you have nailed?
must he have nailed?
must we have nailed?
must you have nailed?
must they have nailed? 	must I have been nailing?
must you have been nailing?
must he have been nailing?
must we have been nailing?
must you have been nailing?
must they have been nailing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I nail?
mustn't you nail?
mustn't he nail?
mustn't we nail?
mustn't you nail?
mustn't they nail? 	mustn't I be nailing?
mustn't you be nailing?
mustn't he be nailing?
mustn't we be nailing?
mustn't you be nailing?
mustn't they be nailing? 	mustn't I have nailed?
mustn't you have nailed?
mustn't he have nailed?
mustn't we have nailed?
mustn't you have nailed?
mustn't they have nailed? 	mustn't I have been nailing?
mustn't you have been nailing?
mustn't he have been nailing?
mustn't we have been nailing?
mustn't you have been nailing?
mustn't they have been nailing?