English verb conjugation
CAN FLY-FISH

Regular verb: fly-fish - fly-fished - fly-fished

Affirmation

Simple form	V-ing form
I can fly-fish you can fly-fish he can fly-fish we can fly-fish you can fly-fish they can fly-fish	I can be fly-fishing you can be fly-fishing he can be fly-fishing we can be fly-fishing you can be fly-fishing they can be fly-fishing
Perfect	V-ing perfect
I can have fly-fished you can have fly-fished he can have fly-fished we can have fly-fished you can have fly-fished they can have fly-fished	I can have been fly-fishing you can have been fly-fishing he can have been fly-fishing we can have been fly-fishing you can have been fly-fishing they can have been fly-fishing

Negation

Simple form	V-ing form
I can't fly-fish you can't fly-fish he can't fly-fish we can't fly-fish you can't fly-fish they can't fly-fish	I can't be fly-fishing you can't be fly-fishing he can't be fly-fishing we can't be fly-fishing you can't be fly-fishing they can't be fly-fishing
Perfect	V-ing perfect
I can't have fly-fished you can't have fly-fished he can't have fly-fished we can't have fly-fished you can't have fly-fished they can't have fly-fished	I can't have been fly-fishing you can't have been fly-fishing he can't have been fly-fishing we can't have been fly-fishing you can't have been fly-fishing they can't have been fly-fishing

Interrogative form

Simple form	V-ing form
can I fly-fish? can you fly-fish? can he fly-fish? can we fly-fish? can you fly-fish? can they fly-fish?	can I be fly-fishing? can you be fly-fishing? can he be fly-fishing? can we be fly-fishing? can you be fly-fishing? can they be fly-fishing?
Perfect	V-ing perfect
can I have fly-fished? can you have fly-fished? can he have fly-fished? can we have fly-fished? can you have fly-fished? can they have fly-fished?	can I have been fly-fishing? can you have been fly-fishing? can he have been fly-fishing? can we have been fly-fishing? can you have been fly-fishing? can they have been fly-fishing?

Interro-negative form

Simple form	V-ing form
can't I fly-fish? can't you fly-fish? can't he fly-fish? can't we fly-fish? can't you fly-fish? can't they fly-fish?	can't I be fly-fishing? can't you be fly-fishing? can't he be fly-fishing? can't we be fly-fishing? can't you be fly-fishing? can't they be fly-fishing?
Perfect	V-ing perfect
can't I have fly-fished? can't you have fly-fished? can't he have fly-fished? can't we have fly-fished? can't you have fly-fished? can't they have fly-fished?	can't I have been fly-fishing? can't you have been fly-fishing? can't he have been fly-fishing? can't we have been fly-fishing? can't you have been fly-fishing? can't they have been fly-fishing?