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