must breath
Verbo regular: breath - breathed- breathed

ón, este verbo puede no existir, se da como ejemplo la conjugación.

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must breath
you must breath
she must breath
we must breath
you must breath
they must breath 	I must be breathing
you must be breathing
she must be breathing
we must be breathing
you must be breathing
they must be breathing	I must have breathed
you must have breathed
she must have breathed
we must have breathed
you must have breathed
they must have breathed	I must have been breathing
you must have been breathing
she must have been breathing
we must have been breathing
you must have been breathing
they must have been breathing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't breath
you mustn't breath
she mustn't breath
we mustn't breath
you mustn't breath
they mustn't breath 	I mustn't be breathing
you mustn't be breathing
she mustn't be breathing
we mustn't be breathing
you mustn't be breathing
they mustn't be breathing	I mustn't have breathed
you mustn't have breathed
she mustn't have breathed
we mustn't have breathed
you mustn't have breathed
they mustn't have breathed	I mustn't have been breathing
you mustn't have been breathing
she mustn't have been breathing
we mustn't have been breathing
you mustn't have been breathing
they mustn't have been breathing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I breath?
must you breath?
must she breath?
must we breath?
must you breath?
must they breath? 	must I be breathing?
must you be breathing?
must she be breathing?
must we be breathing?
must you be breathing?
must they be breathing? 	must I have breathed?
must you have breathed?
must she have breathed?
must we have breathed?
must you have breathed?
must they have breathed? 	must I have been breathing?
must you have been breathing?
must she have been breathing?
must we have been breathing?
must you have been breathing?
must they have been breathing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I breath?
mustn't you breath?
mustn't she breath?
mustn't we breath?
mustn't you breath?
mustn't they breath? 	mustn't I be breathing?
mustn't you be breathing?
mustn't she be breathing?
mustn't we be breathing?
mustn't you be breathing?
mustn't they be breathing? 	mustn't I have breathed?
mustn't you have breathed?
mustn't she have breathed?
mustn't we have breathed?
mustn't you have breathed?
mustn't they have breathed? 	mustn't I have been breathing?
mustn't you have been breathing?
mustn't she have been breathing?
mustn't we have been breathing?
mustn't you have been breathing?
mustn't they have been breathing?