I must appear you must appear she must appear we must appear you must appear they must appear
Forma con V-ing
I must be appearing you must be appearing she must be appearing we must be appearing you must be appearing they must be appearing
Perfecto
I must have appeared you must have appeared she must have appeared we must have appeared you must have appeared they must have appeared
Perfecto con V-ing
I must have been appearing you must have been appearing she must have been appearing we must have been appearing you must have been appearing they must have been appearing
Negación
Forma simple
I must not appear you must not appear she must not appear we must not appear you must not appear they must not appear
Forma con V-ing
I must not be appearing you must not be appearing she must not be appearing we must not be appearing you must not be appearing they must not be appearing
Perfecto
I must not have appeared you must not have appeared she must not have appeared we must not have appeared you must not have appeared they must not have appeared
Perfecto con V-ing
I must not have been appearing you must not have been appearing she must not have been appearing we must not have been appearing you must not have been appearing they must not have been appearing
Forma interrogativa
Forma simple
must I appear? must you appear? must she appear? must we appear? must you appear? must they appear?
Forma con V-ing
must I be appearing? must you be appearing? must she be appearing? must we be appearing? must you be appearing? must they be appearing?
Perfecto
must I have appeared? must you have appeared? must she have appeared? must we have appeared? must you have appeared? must they have appeared?
Perfecto con V-ing
must I have been appearing? must you have been appearing? must she have been appearing? must we have been appearing? must you have been appearing? must they have been appearing?
Forma interro-negativa
Forma simple
must I not appear? must you not appear? must she not appear? must we not appear? must you not appear? must they not appear?
Forma con V-ing
must I not be appearing? must you not be appearing? must she not be appearing? must we not be appearing? must you not be appearing? must they not be appearing?
Perfecto
must I not have appeared? must you not have appeared? must she not have appeared? must we not have appeared? must you not have appeared? must they not have appeared?
Perfecto con V-ing
must I not have been appearing? must you not have been appearing? must she not have been appearing? must we not have been appearing? must you not have been appearing? must they not have been appearing?