English verb conjugation
CAN CATCH

Irregular verb: catch - caught - caught

Affirmation

Simple form	V-ing form
I can catch you can catch he can catch we can catch you can catch they can catch	I can be catching you can be catching he can be catching we can be catching you can be catching they can be catching
Perfect	V-ing perfect
I can have caught you can have caught he can have caught we can have caught you can have caught they can have caught	I can have been catching you can have been catching he can have been catching we can have been catching you can have been catching they can have been catching

Negation

Simple form	V-ing form
I can't catch you can't catch he can't catch we can't catch you can't catch they can't catch	I can't be catching you can't be catching he can't be catching we can't be catching you can't be catching they can't be catching
Perfect	V-ing perfect
I can't have caught you can't have caught he can't have caught we can't have caught you can't have caught they can't have caught	I can't have been catching you can't have been catching he can't have been catching we can't have been catching you can't have been catching they can't have been catching

Interrogative form

Simple form	V-ing form
can I catch? can you catch? can he catch? can we catch? can you catch? can they catch?	can I be catching? can you be catching? can he be catching? can we be catching? can you be catching? can they be catching?
Perfect	V-ing perfect
can I have caught? can you have caught? can he have caught? can we have caught? can you have caught? can they have caught?	can I have been catching? can you have been catching? can he have been catching? can we have been catching? can you have been catching? can they have been catching?

Interro-negative form

Simple form	V-ing form
can't I catch? can't you catch? can't he catch? can't we catch? can't you catch? can't they catch?	can't I be catching? can't you be catching? can't he be catching? can't we be catching? can't you be catching? can't they be catching?
Perfect	V-ing perfect
can't I have caught? can't you have caught? can't he have caught? can't we have caught? can't you have caught? can't they have caught?	can't I have been catching? can't you have been catching? can't he have been catching? can't we have been catching? can't you have been catching? can't they have been catching?