English verb conjugation
CAN FLY

Irregular verb: fly - flew - flown

Affirmation

Simple form	V-ing form
I can fly you can fly he can fly we can fly you can fly they can fly	I can be flying you can be flying he can be flying we can be flying you can be flying they can be flying
Perfect	V-ing perfect
I can have flown you can have flown he can have flown we can have flown you can have flown they can have flown	I can have been flying you can have been flying he can have been flying we can have been flying you can have been flying they can have been flying

Negation

Simple form	V-ing form
I can't fly you can't fly he can't fly we can't fly you can't fly they can't fly	I can't be flying you can't be flying he can't be flying we can't be flying you can't be flying they can't be flying
Perfect	V-ing perfect
I can't have flown you can't have flown he can't have flown we can't have flown you can't have flown they can't have flown	I can't have been flying you can't have been flying he can't have been flying we can't have been flying you can't have been flying they can't have been flying

Interrogative form

Simple form	V-ing form
can I fly? can you fly? can he fly? can we fly? can you fly? can they fly?	can I be flying? can you be flying? can he be flying? can we be flying? can you be flying? can they be flying?
Perfect	V-ing perfect
can I have flown? can you have flown? can he have flown? can we have flown? can you have flown? can they have flown?	can I have been flying? can you have been flying? can he have been flying? can we have been flying? can you have been flying? can they have been flying?

Interro-negative form

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