can shop
Regular verb: shop - shopped- shopped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can shop
you can shop
she can shop
we can shop
you can shop
they can shop 	I can be shopping
you can be shopping
she can be shopping
we can be shopping
you can be shopping
they can be shopping	I can have shopped
you can have shopped
she can have shopped
we can have shopped
you can have shopped
they can have shopped	I can have been shopping
you can have been shopping
she can have been shopping
we can have been shopping
you can have been shopping
they can have been shopping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot shop
you cannot shop
she cannot shop
we cannot shop
you cannot shop
they cannot shop 	I cannot be shopping
you cannot be shopping
she cannot be shopping
we cannot be shopping
you cannot be shopping
they cannot be shopping	I cannot have shopped
you cannot have shopped
she cannot have shopped
we cannot have shopped
you cannot have shopped
they cannot have shopped	I cannot have been shopping
you cannot have been shopping
she cannot have been shopping
we cannot have been shopping
you cannot have been shopping
they cannot have been shopping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I shop?
can you shop?
can she shop?
can we shop?
can you shop?
can they shop? 	can I be shopping?
can you be shopping?
can she be shopping?
can we be shopping?
can you be shopping?
can they be shopping? 	can I have shopped?
can you have shopped?
can she have shopped?
can we have shopped?
can you have shopped?
can they have shopped? 	can I have been shopping?
can you have been shopping?
can she have been shopping?
can we have been shopping?
can you have been shopping?
can they have been shopping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not shop?
can you not shop?
can she not shop?
can we not shop?
can you not shop?
can they not shop? 	can I not be shopping?
can you not be shopping?
can she not be shopping?
can we not be shopping?
can you not be shopping?
can they not be shopping? 	can I not have shopped?
can you not have shopped?
can she not have shopped?
can we not have shopped?
can you not have shopped?
can they not have shopped? 	can I not have been shopping?
can you not have been shopping?
can she not have been shopping?
can we not have been shopping?
can you not have been shopping?
can they not have been shopping?