I must shriek you must shriek he must shriek we must shriek you must shriek they must shriek
Forme en V-ing
I must be shrieking you must be shrieking he must be shrieking we must be shrieking you must be shrieking they must be shrieking
Perfect
I must have shrieked you must have shrieked he must have shrieked we must have shrieked you must have shrieked they must have shrieked
Perfect en V-ing
I must have been shrieking you must have been shrieking he must have been shrieking we must have been shrieking you must have been shrieking they must have been shrieking
Négation
Forme simple
I must not shriek you must not shriek he must not shriek we must not shriek you must not shriek they must not shriek
Forme en V-ing
I must not be shrieking you must not be shrieking he must not be shrieking we must not be shrieking you must not be shrieking they must not be shrieking
Perfect
I must not have shrieked you must not have shrieked he must not have shrieked we must not have shrieked you must not have shrieked they must not have shrieked
Perfect en V-ing
I must not have been shrieking you must not have been shrieking he must not have been shrieking we must not have been shrieking you must not have been shrieking they must not have been shrieking
Forme interrogative
Forme simple
must I shriek? must you shriek? must he shriek? must we shriek? must you shriek? must they shriek?
Forme en V-ing
must I be shrieking? must you be shrieking? must he be shrieking? must we be shrieking? must you be shrieking? must they be shrieking?
Perfect
must I have shrieked? must you have shrieked? must he have shrieked? must we have shrieked? must you have shrieked? must they have shrieked?
Perfect en V-ing
must I have been shrieking? must you have been shrieking? must he have been shrieking? must we have been shrieking? must you have been shrieking? must they have been shrieking?
Forme interro-négative
Forme simple
must I not shriek? must you not shriek? must he not shriek? must we not shriek? must you not shriek? must they not shriek?
Forme en V-ing
must I not be shrieking? must you not be shrieking? must he not be shrieking? must we not be shrieking? must you not be shrieking? must they not be shrieking?
Perfect
must I not have shrieked? must you not have shrieked? must he not have shrieked? must we not have shrieked? must you not have shrieked? must they not have shrieked?
Perfect en V-ing
must I not have been shrieking? must you not have been shrieking? must he not have been shrieking? must we not have been shrieking? must you not have been shrieking? must they not have been shrieking?