English verb conjugation
CAN TETHER

Regular verb: tether - tethered - tethered

Affirmation

Simple form	V-ing form
I can tether you can tether he can tether we can tether you can tether they can tether	I can be tethering you can be tethering he can be tethering we can be tethering you can be tethering they can be tethering
Perfect	V-ing perfect
I can have tethered you can have tethered he can have tethered we can have tethered you can have tethered they can have tethered	I can have been tethering you can have been tethering he can have been tethering we can have been tethering you can have been tethering they can have been tethering

Negation

Simple form	V-ing form
I cannot tether you cannot tether he cannot tether we cannot tether you cannot tether they cannot tether	I cannot be tethering you cannot be tethering he cannot be tethering we cannot be tethering you cannot be tethering they cannot be tethering
Perfect	V-ing perfect
I cannot have tethered you cannot have tethered he cannot have tethered we cannot have tethered you cannot have tethered they cannot have tethered	I cannot have been tethering you cannot have been tethering he cannot have been tethering we cannot have been tethering you cannot have been tethering they cannot have been tethering

Interrogative form

Simple form	V-ing form
can I tether? can you tether? can he tether? can we tether? can you tether? can they tether?	can I be tethering? can you be tethering? can he be tethering? can we be tethering? can you be tethering? can they be tethering?
Perfect	V-ing perfect
can I have tethered? can you have tethered? can he have tethered? can we have tethered? can you have tethered? can they have tethered?	can I have been tethering? can you have been tethering? can he have been tethering? can we have been tethering? can you have been tethering? can they have been tethering?

Interro-negative form

Simple form	V-ing form
can I not tether? can you not tether? can he not tether? can we not tether? can you not tether? can they not tether?	can I not be tethering? can you not be tethering? can he not be tethering? can we not be tethering? can you not be tethering? can they not be tethering?
Perfect	V-ing perfect
can I not have tethered? can you not have tethered? can he not have tethered? can we not have tethered? can you not have tethered? can they not have tethered?	can I not have been tethering? can you not have been tethering? can he not have been tethering? can we not have been tethering? can you not have been tethering? can they not have been tethering?