English verb conjugation
CAN FURTHER

Regular verb: further - furthered - furthered

Affirmation

Simple form	V-ing form
I can further you can further he can further we can further you can further they can further	I can be furthering you can be furthering he can be furthering we can be furthering you can be furthering they can be furthering
Perfect	V-ing perfect
I can have furthered you can have furthered he can have furthered we can have furthered you can have furthered they can have furthered	I can have been furthering you can have been furthering he can have been furthering we can have been furthering you can have been furthering they can have been furthering

Negation

Simple form	V-ing form
I can't further you can't further he can't further we can't further you can't further they can't further	I can't be furthering you can't be furthering he can't be furthering we can't be furthering you can't be furthering they can't be furthering
Perfect	V-ing perfect
I can't have furthered you can't have furthered he can't have furthered we can't have furthered you can't have furthered they can't have furthered	I can't have been furthering you can't have been furthering he can't have been furthering we can't have been furthering you can't have been furthering they can't have been furthering

Interrogative form

Simple form	V-ing form
can I further? can you further? can he further? can we further? can you further? can they further?	can I be furthering? can you be furthering? can he be furthering? can we be furthering? can you be furthering? can they be furthering?
Perfect	V-ing perfect
can I have furthered? can you have furthered? can he have furthered? can we have furthered? can you have furthered? can they have furthered?	can I have been furthering? can you have been furthering? can he have been furthering? can we have been furthering? can you have been furthering? can they have been furthering?

Interro-negative form

Simple form	V-ing form
can't I further? can't you further? can't he further? can't we further? can't you further? can't they further?	can't I be furthering? can't you be furthering? can't he be furthering? can't we be furthering? can't you be furthering? can't they be furthering?
Perfect	V-ing perfect
can't I have furthered? can't you have furthered? can't he have furthered? can't we have furthered? can't you have furthered? can't they have furthered?	can't I have been furthering? can't you have been furthering? can't he have been furthering? can't we have been furthering? can't you have been furthering? can't they have been furthering?