English verb conjugation
CAN TEACH

Irregular verb: teach - taught - taught

Affirmation

Simple form	V-ing form
I can teach you can teach he can teach we can teach you can teach they can teach	I can be teaching you can be teaching he can be teaching we can be teaching you can be teaching they can be teaching
Perfect	V-ing perfect
I can have taught you can have taught he can have taught we can have taught you can have taught they can have taught	I can have been teaching you can have been teaching he can have been teaching we can have been teaching you can have been teaching they can have been teaching

Negation

Simple form	V-ing form
I cannot teach you cannot teach he cannot teach we cannot teach you cannot teach they cannot teach	I cannot be teaching you cannot be teaching he cannot be teaching we cannot be teaching you cannot be teaching they cannot be teaching
Perfect	V-ing perfect
I cannot have taught you cannot have taught he cannot have taught we cannot have taught you cannot have taught they cannot have taught	I cannot have been teaching you cannot have been teaching he cannot have been teaching we cannot have been teaching you cannot have been teaching they cannot have been teaching

Interrogative form

Simple form	V-ing form
can I teach? can you teach? can he teach? can we teach? can you teach? can they teach?	can I be teaching? can you be teaching? can he be teaching? can we be teaching? can you be teaching? can they be teaching?
Perfect	V-ing perfect
can I have taught? can you have taught? can he have taught? can we have taught? can you have taught? can they have taught?	can I have been teaching? can you have been teaching? can he have been teaching? can we have been teaching? can you have been teaching? can they have been teaching?

Interro-negative form

Simple form	V-ing form
can I not teach? can you not teach? can he not teach? can we not teach? can you not teach? can they not teach?	can I not be teaching? can you not be teaching? can he not be teaching? can we not be teaching? can you not be teaching? can they not be teaching?
Perfect	V-ing perfect
can I not have taught? can you not have taught? can he not have taught? can we not have taught? can you not have taught? can they not have taught?	can I not have been teaching? can you not have been teaching? can he not have been teaching? can we not have been teaching? can you not have been teaching? can they not have been teaching?