must herd
Verbo regular: herd - herded- herded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must herd
you must herd
he must herd
we must herd
you must herd
they must herd 	I must be herding
you must be herding
he must be herding
we must be herding
you must be herding
they must be herding	I must have herded
you must have herded
he must have herded
we must have herded
you must have herded
they must have herded	I must have been herding
you must have been herding
he must have been herding
we must have been herding
you must have been herding
they must have been herding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't herd
you mustn't herd
he mustn't herd
we mustn't herd
you mustn't herd
they mustn't herd 	I mustn't be herding
you mustn't be herding
he mustn't be herding
we mustn't be herding
you mustn't be herding
they mustn't be herding	I mustn't have herded
you mustn't have herded
he mustn't have herded
we mustn't have herded
you mustn't have herded
they mustn't have herded	I mustn't have been herding
you mustn't have been herding
he mustn't have been herding
we mustn't have been herding
you mustn't have been herding
they mustn't have been herding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I herd?
must you herd?
must he herd?
must we herd?
must you herd?
must they herd? 	must I be herding?
must you be herding?
must he be herding?
must we be herding?
must you be herding?
must they be herding? 	must I have herded?
must you have herded?
must he have herded?
must we have herded?
must you have herded?
must they have herded? 	must I have been herding?
must you have been herding?
must he have been herding?
must we have been herding?
must you have been herding?
must they have been herding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I herd?
mustn't you herd?
mustn't he herd?
mustn't we herd?
mustn't you herd?
mustn't they herd? 	mustn't I be herding?
mustn't you be herding?
mustn't he be herding?
mustn't we be herding?
mustn't you be herding?
mustn't they be herding? 	mustn't I have herded?
mustn't you have herded?
mustn't he have herded?
mustn't we have herded?
mustn't you have herded?
mustn't they have herded? 	mustn't I have been herding?
mustn't you have been herding?
mustn't he have been herding?
mustn't we have been herding?
mustn't you have been herding?
mustn't they have been herding?