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 can't tether you can't tether he can't tether we can't tether you can't tether they can't tether	I can't be tethering you can't be tethering he can't be tethering we can't be tethering you can't be tethering they can't be tethering
Perfect	V-ing perfect
I can't have tethered you can't have tethered he can't have tethered we can't have tethered you can't have tethered they can't have tethered	I can't have been tethering you can't have been tethering he can't have been tethering we can't have been tethering you can't have been tethering they can't 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't I tether? can't you tether? can't he tether? can't we tether? can't you tether? can't they tether?	can't I be tethering? can't you be tethering? can't he be tethering? can't we be tethering? can't you be tethering? can't they be tethering?
Perfect	V-ing perfect
can't I have tethered? can't you have tethered? can't he have tethered? can't we have tethered? can't you have tethered? can't they have tethered?	can't I have been tethering? can't you have been tethering? can't he have been tethering? can't we have been tethering? can't you have been tethering? can't they have been tethering?