English verb conjugation
CAN REFRAIN

Regular verb: refrain - refrained - refrained

Affirmation

Simple form	V-ing form
I can refrain you can refrain she can refrain we can refrain you can refrain they can refrain	I can be refraining you can be refraining she 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 she 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 she 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 cannot refrain you cannot refrain she cannot refrain we cannot refrain you cannot refrain they cannot refrain	I cannot be refraining you cannot be refraining she cannot be refraining we cannot be refraining you cannot be refraining they cannot be refraining
Perfect	V-ing perfect
I cannot have refrained you cannot have refrained she cannot have refrained we cannot have refrained you cannot have refrained they cannot have refrained	I cannot have been refraining you cannot have been refraining she cannot have been refraining we cannot have been refraining you cannot have been refraining they cannot have been refraining

Interrogative form

Simple form	V-ing form
can I refrain? can you refrain? can she refrain? can we refrain? can you refrain? can they refrain?	can I be refraining? can you be refraining? can she 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 she 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 she 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 I not refrain? can you not refrain? can she not refrain? can we not refrain? can you not refrain? can they not refrain?	can I not be refraining? can you not be refraining? can she not be refraining? can we not be refraining? can you not be refraining? can they not be refraining?
Perfect	V-ing perfect
can I not have refrained? can you not have refrained? can she not have refrained? can we not have refrained? can you not have refrained? can they not have refrained?	can I not have been refraining? can you not have been refraining? can she not have been refraining? can we not have been refraining? can you not have been refraining? can they not have been refraining?