must attach
Verbo regular: attach - attached- attached

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must attach
you must attach
he must attach
we must attach
you must attach
they must attach 	I must be attaching
you must be attaching
he must be attaching
we must be attaching
you must be attaching
they must be attaching	I must have attached
you must have attached
he must have attached
we must have attached
you must have attached
they must have attached	I must have been attaching
you must have been attaching
he must have been attaching
we must have been attaching
you must have been attaching
they must have been attaching	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not attach
you must not attach
he must not attach
we must not attach
you must not attach
they must not attach 	I must not be attaching
you must not be attaching
he must not be attaching
we must not be attaching
you must not be attaching
they must not be attaching	I must not have attached
you must not have attached
he must not have attached
we must not have attached
you must not have attached
they must not have attached	I must not have been attaching
you must not have been attaching
he must not have been attaching
we must not have been attaching
you must not have been attaching
they must not have been attaching	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I attach?
must you attach?
must he attach?
must we attach?
must you attach?
must they attach? 	must I be attaching?
must you be attaching?
must he be attaching?
must we be attaching?
must you be attaching?
must they be attaching? 	must I have attached?
must you have attached?
must he have attached?
must we have attached?
must you have attached?
must they have attached? 	must I have been attaching?
must you have been attaching?
must he have been attaching?
must we have been attaching?
must you have been attaching?
must they have been attaching? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not attach?
must you not attach?
must he not attach?
must we not attach?
must you not attach?
must they not attach? 	must I not be attaching?
must you not be attaching?
must he not be attaching?
must we not be attaching?
must you not be attaching?
must they not be attaching? 	must I not have attached?
must you not have attached?
must he not have attached?
must we not have attached?
must you not have attached?
must they not have attached? 	must I not have been attaching?
must you not have been attaching?
must he not have been attaching?
must we not have been attaching?
must you not have been attaching?
must they not have been attaching?