I must shepherd you must shepherd he must shepherd we must shepherd you must shepherd they must shepherd
V-ing form
I must be shepherding you must be shepherding he must be shepherding we must be shepherding you must be shepherding they must be shepherding
Perfect
I must have shepherded you must have shepherded he must have shepherded we must have shepherded you must have shepherded they must have shepherded
V-ing perfect
I must have been shepherding you must have been shepherding he must have been shepherding we must have been shepherding you must have been shepherding they must have been shepherding
Negation
Simple form
I must not shepherd you must not shepherd he must not shepherd we must not shepherd you must not shepherd they must not shepherd
V-ing form
I must not be shepherding you must not be shepherding he must not be shepherding we must not be shepherding you must not be shepherding they must not be shepherding
Perfect
I must not have shepherded you must not have shepherded he must not have shepherded we must not have shepherded you must not have shepherded they must not have shepherded
V-ing perfect
I must not have been shepherding you must not have been shepherding he must not have been shepherding we must not have been shepherding you must not have been shepherding they must not have been shepherding
Interrogative form
Simple form
must I shepherd? must you shepherd? must he shepherd? must we shepherd? must you shepherd? must they shepherd?
V-ing form
must I be shepherding? must you be shepherding? must he be shepherding? must we be shepherding? must you be shepherding? must they be shepherding?
Perfect
must I have shepherded? must you have shepherded? must he have shepherded? must we have shepherded? must you have shepherded? must they have shepherded?
V-ing perfect
must I have been shepherding? must you have been shepherding? must he have been shepherding? must we have been shepherding? must you have been shepherding? must they have been shepherding?
Interro-negative form
Simple form
must I not shepherd? must you not shepherd? must he not shepherd? must we not shepherd? must you not shepherd? must they not shepherd?
V-ing form
must I not be shepherding? must you not be shepherding? must he not be shepherding? must we not be shepherding? must you not be shepherding? must they not be shepherding?
Perfect
must I not have shepherded? must you not have shepherded? must he not have shepherded? must we not have shepherded? must you not have shepherded? must they not have shepherded?
V-ing perfect
must I not have been shepherding? must you not have been shepherding? must he not have been shepherding? must we not have been shepherding? must you not have been shepherding? must they not have been shepherding?