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 cannot attend you cannot attend he cannot attend we cannot attend you cannot attend they cannot attend	I cannot be attending you cannot be attending he cannot be attending we cannot be attending you cannot be attending they cannot be attending
Perfect	V-ing perfect
I cannot have attended you cannot have attended he cannot have attended we cannot have attended you cannot have attended they cannot have attended	I cannot have been attending you cannot have been attending he cannot have been attending we cannot have been attending you cannot have been attending they cannot 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 I not attend? can you not attend? can he not attend? can we not attend? can you not attend? can they not attend?	can I not be attending? can you not be attending? can he not be attending? can we not be attending? can you not be attending? can they not be attending?
Perfect	V-ing perfect
can I not have attended? can you not have attended? can he not have attended? can we not have attended? can you not have attended? can they not have attended?	can I not have been attending? can you not have been attending? can he not have been attending? can we not have been attending? can you not have been attending? can they not have been attending?