I must jump you must jump she must jump we must jump you must jump they must jump
V-ing form
I must be jumping you must be jumping she must be jumping we must be jumping you must be jumping they must be jumping
Perfect
I must have jumped you must have jumped she must have jumped we must have jumped you must have jumped they must have jumped
V-ing perfect
I must have been jumping you must have been jumping she must have been jumping we must have been jumping you must have been jumping they must have been jumping
Negation
Simple form
I must not jump you must not jump she must not jump we must not jump you must not jump they must not jump
V-ing form
I must not be jumping you must not be jumping she must not be jumping we must not be jumping you must not be jumping they must not be jumping
Perfect
I must not have jumped you must not have jumped she must not have jumped we must not have jumped you must not have jumped they must not have jumped
V-ing perfect
I must not have been jumping you must not have been jumping she must not have been jumping we must not have been jumping you must not have been jumping they must not have been jumping
Interrogative form
Simple form
must I jump? must you jump? must she jump? must we jump? must you jump? must they jump?
V-ing form
must I be jumping? must you be jumping? must she be jumping? must we be jumping? must you be jumping? must they be jumping?
Perfect
must I have jumped? must you have jumped? must she have jumped? must we have jumped? must you have jumped? must they have jumped?
V-ing perfect
must I have been jumping? must you have been jumping? must she have been jumping? must we have been jumping? must you have been jumping? must they have been jumping?
Interro-negative form
Simple form
must I not jump? must you not jump? must she not jump? must we not jump? must you not jump? must they not jump?
V-ing form
must I not be jumping? must you not be jumping? must she not be jumping? must we not be jumping? must you not be jumping? must they not be jumping?
Perfect
must I not have jumped? must you not have jumped? must she not have jumped? must we not have jumped? must you not have jumped? must they not have jumped?
V-ing perfect
must I not have been jumping? must you not have been jumping? must she not have been jumping? must we not have been jumping? must you not have been jumping? must they not have been jumping?