I can act you can act she can act we can act you can act they can act
V-ing form
I can be acting you can be acting she can be acting we can be acting you can be acting they can be acting
Perfect
I can have acted you can have acted she can have acted we can have acted you can have acted they can have acted
V-ing perfect
I can have been acting you can have been acting she can have been acting we can have been acting you can have been acting they can have been acting
Negation
Simple form
I can't act you can't act she can't act we can't act you can't act they can't act
V-ing form
I can't be acting you can't be acting she can't be acting we can't be acting you can't be acting they can't be acting
Perfect
I can't have acted you can't have acted she can't have acted we can't have acted you can't have acted they can't have acted
V-ing perfect
I can't have been acting you can't have been acting she can't have been acting we can't have been acting you can't have been acting they can't have been acting
Interrogative form
Simple form
can I act? can you act? can she act? can we act? can you act? can they act?
V-ing form
can I be acting? can you be acting? can she be acting? can we be acting? can you be acting? can they be acting?
Perfect
can I have acted? can you have acted? can she have acted? can we have acted? can you have acted? can they have acted?
V-ing perfect
can I have been acting? can you have been acting? can she have been acting? can we have been acting? can you have been acting? can they have been acting?
Interro-negative form
Simple form
can't I act? can't you act? can't she act? can't we act? can't you act? can't they act?
V-ing form
can't I be acting? can't you be acting? can't she be acting? can't we be acting? can't you be acting? can't they be acting?
Perfect
can't I have acted? can't you have acted? can't she have acted? can't we have acted? can't you have acted? can't they have acted?
V-ing perfect
can't I have been acting? can't you have been acting? can't she have been acting? can't we have been acting? can't you have been acting? can't they have been acting?