English verb conjugation
CAN TALK

Regular verb: talk - talked - talked

Affirmation

Simple form	V-ing form
I can talk you can talk he can talk we can talk you can talk they can talk	I can be talking you can be talking he can be talking we can be talking you can be talking they can be talking
Perfect	V-ing perfect
I can have talked you can have talked he can have talked we can have talked you can have talked they can have talked	I can have been talking you can have been talking he can have been talking we can have been talking you can have been talking they can have been talking

Negation

Simple form	V-ing form
I cannot talk you cannot talk he cannot talk we cannot talk you cannot talk they cannot talk	I cannot be talking you cannot be talking he cannot be talking we cannot be talking you cannot be talking they cannot be talking
Perfect	V-ing perfect
I cannot have talked you cannot have talked he cannot have talked we cannot have talked you cannot have talked they cannot have talked	I cannot have been talking you cannot have been talking he cannot have been talking we cannot have been talking you cannot have been talking they cannot have been talking

Interrogative form

Simple form	V-ing form
can I talk? can you talk? can he talk? can we talk? can you talk? can they talk?	can I be talking? can you be talking? can he be talking? can we be talking? can you be talking? can they be talking?
Perfect	V-ing perfect
can I have talked? can you have talked? can he have talked? can we have talked? can you have talked? can they have talked?	can I have been talking? can you have been talking? can he have been talking? can we have been talking? can you have been talking? can they have been talking?

Interro-negative form

Simple form	V-ing form
can I not talk? can you not talk? can he not talk? can we not talk? can you not talk? can they not talk?	can I not be talking? can you not be talking? can he not be talking? can we not be talking? can you not be talking? can they not be talking?
Perfect	V-ing perfect
can I not have talked? can you not have talked? can he not have talked? can we not have talked? can you not have talked? can they not have talked?	can I not have been talking? can you not have been talking? can he not have been talking? can we not have been talking? can you not have been talking? can they not have been talking?