English verb conjugation
CAN EXPAND

Regular verb: expand - expanded - expanded

Affirmation

Simple form	V-ing form
I can expand you can expand he can expand we can expand you can expand they can expand	I can be expanding you can be expanding he can be expanding we can be expanding you can be expanding they can be expanding
Perfect	V-ing perfect
I can have expanded you can have expanded he can have expanded we can have expanded you can have expanded they can have expanded	I can have been expanding you can have been expanding he can have been expanding we can have been expanding you can have been expanding they can have been expanding

Negation

Simple form	V-ing form
I can't expand you can't expand he can't expand we can't expand you can't expand they can't expand	I can't be expanding you can't be expanding he can't be expanding we can't be expanding you can't be expanding they can't be expanding
Perfect	V-ing perfect
I can't have expanded you can't have expanded he can't have expanded we can't have expanded you can't have expanded they can't have expanded	I can't have been expanding you can't have been expanding he can't have been expanding we can't have been expanding you can't have been expanding they can't have been expanding

Interrogative form

Simple form	V-ing form
can I expand? can you expand? can he expand? can we expand? can you expand? can they expand?	can I be expanding? can you be expanding? can he be expanding? can we be expanding? can you be expanding? can they be expanding?
Perfect	V-ing perfect
can I have expanded? can you have expanded? can he have expanded? can we have expanded? can you have expanded? can they have expanded?	can I have been expanding? can you have been expanding? can he have been expanding? can we have been expanding? can you have been expanding? can they have been expanding?

Interro-negative form

Simple form	V-ing form
can't I expand? can't you expand? can't he expand? can't we expand? can't you expand? can't they expand?	can't I be expanding? can't you be expanding? can't he be expanding? can't we be expanding? can't you be expanding? can't they be expanding?
Perfect	V-ing perfect
can't I have expanded? can't you have expanded? can't he have expanded? can't we have expanded? can't you have expanded? can't they have expanded?	can't I have been expanding? can't you have been expanding? can't he have been expanding? can't we have been expanding? can't you have been expanding? can't they have been expanding?