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 mustn't shop you mustn't shop he mustn't shop we mustn't shop you mustn't shop they mustn't shop
V-ing form
I mustn't be shopping you mustn't be shopping he mustn't be shopping we mustn't be shopping you mustn't be shopping they mustn't be shopping
Perfect
I mustn't have shopped you mustn't have shopped he mustn't have shopped we mustn't have shopped you mustn't have shopped they mustn't have shopped
V-ing perfect
I mustn't have been shopping you mustn't have been shopping he mustn't have been shopping we mustn't have been shopping you mustn't have been shopping they mustn't 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
mustn't I shop? mustn't you shop? mustn't he shop? mustn't we shop? mustn't you shop? mustn't they shop?
V-ing form
mustn't I be shopping? mustn't you be shopping? mustn't he be shopping? mustn't we be shopping? mustn't you be shopping? mustn't they be shopping?
Perfect
mustn't I have shopped? mustn't you have shopped? mustn't he have shopped? mustn't we have shopped? mustn't you have shopped? mustn't they have shopped?
V-ing perfect
mustn't I have been shopping? mustn't you have been shopping? mustn't he have been shopping? mustn't we have been shopping? mustn't you have been shopping? mustn't they have been shopping?