can fish
Regular verb: fish - fished- fished

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

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

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

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