can fly
Irregular verb: fly - flew- flown

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?