must tether
Verbo regular: tether - tethered- tethered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must tether
you must tether
he must tether
we must tether
you must tether
they must tether 	I must be tethering
you must be tethering
he must be tethering
we must be tethering
you must be tethering
they must be tethering	I must have tethered
you must have tethered
he must have tethered
we must have tethered
you must have tethered
they must have tethered	I must have been tethering
you must have been tethering
he must have been tethering
we must have been tethering
you must have been tethering
they must have been tethering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't tether
you mustn't tether
he mustn't tether
we mustn't tether
you mustn't tether
they mustn't tether 	I mustn't be tethering
you mustn't be tethering
he mustn't be tethering
we mustn't be tethering
you mustn't be tethering
they mustn't be tethering	I mustn't have tethered
you mustn't have tethered
he mustn't have tethered
we mustn't have tethered
you mustn't have tethered
they mustn't have tethered	I mustn't have been tethering
you mustn't have been tethering
he mustn't have been tethering
we mustn't have been tethering
you mustn't have been tethering
they mustn't have been tethering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I tether?
must you tether?
must he tether?
must we tether?
must you tether?
must they tether? 	must I be tethering?
must you be tethering?
must he be tethering?
must we be tethering?
must you be tethering?
must they be tethering? 	must I have tethered?
must you have tethered?
must he have tethered?
must we have tethered?
must you have tethered?
must they have tethered? 	must I have been tethering?
must you have been tethering?
must he have been tethering?
must we have been tethering?
must you have been tethering?
must they have been tethering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I tether?
mustn't you tether?
mustn't he tether?
mustn't we tether?
mustn't you tether?
mustn't they tether? 	mustn't I be tethering?
mustn't you be tethering?
mustn't he be tethering?
mustn't we be tethering?
mustn't you be tethering?
mustn't they be tethering? 	mustn't I have tethered?
mustn't you have tethered?
mustn't he have tethered?
mustn't we have tethered?
mustn't you have tethered?
mustn't they have tethered? 	mustn't I have been tethering?
mustn't you have been tethering?
mustn't he have been tethering?
mustn't we have been tethering?
mustn't you have been tethering?
mustn't they have been tethering?