English verb conjugation
CAN REFRAIN

Regular verb: refrain - refrained - refrained

Affirmation

Simple form	V-ing form
I can refrain you can refrain he can refrain we can refrain you can refrain they can refrain	I can be refraining you can be refraining he can be refraining we can be refraining you can be refraining they can be refraining
Perfect	V-ing perfect
I can have refrained you can have refrained he can have refrained we can have refrained you can have refrained they can have refrained	I can have been refraining you can have been refraining he can have been refraining we can have been refraining you can have been refraining they can have been refraining

Negation

Simple form	V-ing form
I can't refrain you can't refrain he can't refrain we can't refrain you can't refrain they can't refrain	I can't be refraining you can't be refraining he can't be refraining we can't be refraining you can't be refraining they can't be refraining
Perfect	V-ing perfect
I can't have refrained you can't have refrained he can't have refrained we can't have refrained you can't have refrained they can't have refrained	I can't have been refraining you can't have been refraining he can't have been refraining we can't have been refraining you can't have been refraining they can't have been refraining

Interrogative form

Simple form	V-ing form
can I refrain? can you refrain? can he refrain? can we refrain? can you refrain? can they refrain?	can I be refraining? can you be refraining? can he be refraining? can we be refraining? can you be refraining? can they be refraining?
Perfect	V-ing perfect
can I have refrained? can you have refrained? can he have refrained? can we have refrained? can you have refrained? can they have refrained?	can I have been refraining? can you have been refraining? can he have been refraining? can we have been refraining? can you have been refraining? can they have been refraining?

Interro-negative form

Simple form	V-ing form
can't I refrain? can't you refrain? can't he refrain? can't we refrain? can't you refrain? can't they refrain?	can't I be refraining? can't you be refraining? can't he be refraining? can't we be refraining? can't you be refraining? can't they be refraining?
Perfect	V-ing perfect
can't I have refrained? can't you have refrained? can't he have refrained? can't we have refrained? can't you have refrained? can't they have refrained?	can't I have been refraining? can't you have been refraining? can't he have been refraining? can't we have been refraining? can't you have been refraining? can't they have been refraining?