I must shop you must shop he must shop we must shop you must shop they must shop
V-ing form
I must be shopping you must be shopping he must be shopping we must be shopping you must be shopping they must be shopping
Perfect
I must have shopped you must have shopped he must have shopped we must have shopped you must have shopped they must have shopped
V-ing perfect
I must have been shopping you must have been shopping he must have been shopping we must have been shopping you must have been shopping they must have been shopping
Negation
Simple form
I must not shop you must not shop he must not shop we must not shop you must not shop they must not shop
V-ing form
I must not be shopping you must not be shopping he must not be shopping we must not be shopping you must not be shopping they must not be shopping
Perfect
I must not have shopped you must not have shopped he must not have shopped we must not have shopped you must not have shopped they must not have shopped
V-ing perfect
I must not have been shopping you must not have been shopping he must not have been shopping we must not have been shopping you must not have been shopping they must not have been shopping
Interrogative form
Simple form
must I shop? must you shop? must he shop? must we shop? must you shop? must they shop?
V-ing form
must I be shopping? must you be shopping? must he be shopping? must we be shopping? must you be shopping? must they be shopping?
Perfect
must I have shopped? must you have shopped? must he have shopped? must we have shopped? must you have shopped? must they have shopped?
V-ing perfect
must I have been shopping? must you have been shopping? must he have been shopping? must we have been shopping? must you have been shopping? must they have been shopping?
Interro-negative form
Simple form
must I not shop? must you not shop? must he not shop? must we not shop? must you not shop? must they not shop?
V-ing form
must I not be shopping? must you not be shopping? must he not be shopping? must we not be shopping? must you not be shopping? must they not be shopping?
Perfect
must I not have shopped? must you not have shopped? must he not have shopped? must we not have shopped? must you not have shopped? must they not have shopped?
V-ing perfect
must I not have been shopping? must you not have been shopping? must he not have been shopping? must we not have been shopping? must you not have been shopping? must they not have been shopping?