could shop
Verbo regular: shop - shopped- shopped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could shop
you could shop
she could shop
we could shop
you could shop
they could shop 	I could be shopping
you could be shopping
she could be shopping
we could be shopping
you could be shopping
they could be shopping	I could have shopped
you could have shopped
she could have shopped
we could have shopped
you could have shopped
they could have shopped	I could have been shopping
you could have been shopping
she could have been shopping
we could have been shopping
you could have been shopping
they could have been shopping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not shop
you could not shop
she could not shop
we could not shop
you could not shop
they could not shop 	I could not be shopping
you could not be shopping
she could not be shopping
we could not be shopping
you could not be shopping
they could not be shopping	I could not have shopped
you could not have shopped
she could not have shopped
we could not have shopped
you could not have shopped
they could not have shopped	I could not have been shopping
you could not have been shopping
she could not have been shopping
we could not have been shopping
you could not have been shopping
they could not have been shopping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I shop?
could you shop?
could she shop?
could we shop?
could you shop?
could they shop? 	could I be shopping?
could you be shopping?
could she be shopping?
could we be shopping?
could you be shopping?
could they be shopping? 	could I have shopped?
could you have shopped?
could she have shopped?
could we have shopped?
could you have shopped?
could they have shopped? 	could I have been shopping?
could you have been shopping?
could she have been shopping?
could we have been shopping?
could you have been shopping?
could they have been shopping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not shop?
could you not shop?
could she not shop?
could we not shop?
could you not shop?
could they not shop? 	could I not be shopping?
could you not be shopping?
could she not be shopping?
could we not be shopping?
could you not be shopping?
could they not be shopping? 	could I not have shopped?
could you not have shopped?
could she not have shopped?
could we not have shopped?
could you not have shopped?
could they not have shopped? 	could I not have been shopping?
could you not have been shopping?
could she not have been shopping?
could we not have been shopping?
could you not have been shopping?
could they not have been shopping?