English verb conjugation
CAN TRAIN

Regular verb: train - trained - trained

Affirmation

Simple form	V-ing form
I can train you can train he can train we can train you can train they can train	I can be training you can be training he can be training we can be training you can be training they can be training
Perfect	V-ing perfect
I can have trained you can have trained he can have trained we can have trained you can have trained they can have trained	I can have been training you can have been training he can have been training we can have been training you can have been training they can have been training

Negation

Simple form	V-ing form
I can't train you can't train he can't train we can't train you can't train they can't train	I can't be training you can't be training he can't be training we can't be training you can't be training they can't be training
Perfect	V-ing perfect
I can't have trained you can't have trained he can't have trained we can't have trained you can't have trained they can't have trained	I can't have been training you can't have been training he can't have been training we can't have been training you can't have been training they can't have been training

Interrogative form

Simple form	V-ing form
can I train? can you train? can he train? can we train? can you train? can they train?	can I be training? can you be training? can he be training? can we be training? can you be training? can they be training?
Perfect	V-ing perfect
can I have trained? can you have trained? can he have trained? can we have trained? can you have trained? can they have trained?	can I have been training? can you have been training? can he have been training? can we have been training? can you have been training? can they have been training?

Interro-negative form

Simple form	V-ing form
can't I train? can't you train? can't he train? can't we train? can't you train? can't they train?	can't I be training? can't you be training? can't he be training? can't we be training? can't you be training? can't they be training?
Perfect	V-ing perfect
can't I have trained? can't you have trained? can't he have trained? can't we have trained? can't you have trained? can't they have trained?	can't I have been training? can't you have been training? can't he have been training? can't we have been training? can't you have been training? can't they have been training?