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 cannot catch you cannot catch he cannot catch we cannot catch you cannot catch they cannot catch	I cannot be catching you cannot be catching he cannot be catching we cannot be catching you cannot be catching they cannot be catching
Perfect	V-ing perfect
I cannot have caught you cannot have caught he cannot have caught we cannot have caught you cannot have caught they cannot have caught	I cannot have been catching you cannot have been catching he cannot have been catching we cannot have been catching you cannot have been catching they cannot 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 I not catch? can you not catch? can he not catch? can we not catch? can you not catch? can they not catch?	can I not be catching? can you not be catching? can he not be catching? can we not be catching? can you not be catching? can they not be catching?
Perfect	V-ing perfect
can I not have caught? can you not have caught? can he not have caught? can we not have caught? can you not have caught? can they not have caught?	can I not have been catching? can you not have been catching? can he not have been catching? can we not have been catching? can you not have been catching? can they not have been catching?