English verb conjugation
CAN SHOP

Regular verb: shop - shopped - shopped

Affirmation

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