English verb conjugation
CAN ATTEND

Regular verb: attend - attended - attended

Affirmation

Simple form	V-ing form
I can attend you can attend he can attend we can attend you can attend they can attend	I can be attending you can be attending he can be attending we can be attending you can be attending they can be attending
Perfect	V-ing perfect
I can have attended you can have attended he can have attended we can have attended you can have attended they can have attended	I can have been attending you can have been attending he can have been attending we can have been attending you can have been attending they can have been attending

Negation

Simple form	V-ing form
I can't attend you can't attend he can't attend we can't attend you can't attend they can't attend	I can't be attending you can't be attending he can't be attending we can't be attending you can't be attending they can't be attending
Perfect	V-ing perfect
I can't have attended you can't have attended he can't have attended we can't have attended you can't have attended they can't have attended	I can't have been attending you can't have been attending he can't have been attending we can't have been attending you can't have been attending they can't have been attending

Interrogative form

Simple form	V-ing form
can I attend? can you attend? can he attend? can we attend? can you attend? can they attend?	can I be attending? can you be attending? can he be attending? can we be attending? can you be attending? can they be attending?
Perfect	V-ing perfect
can I have attended? can you have attended? can he have attended? can we have attended? can you have attended? can they have attended?	can I have been attending? can you have been attending? can he have been attending? can we have been attending? can you have been attending? can they have been attending?

Interro-negative form

Simple form	V-ing form
can't I attend? can't you attend? can't he attend? can't we attend? can't you attend? can't they attend?	can't I be attending? can't you be attending? can't he be attending? can't we be attending? can't you be attending? can't they be attending?
Perfect	V-ing perfect
can't I have attended? can't you have attended? can't he have attended? can't we have attended? can't you have attended? can't they have attended?	can't I have been attending? can't you have been attending? can't he have been attending? can't we have been attending? can't you have been attending? can't they have been attending?