I must fade you must fade she must fade we must fade you must fade they must fade
Forma con V-ing
I must be fading you must be fading she must be fading we must be fading you must be fading they must be fading
Perfecto
I must have faded you must have faded she must have faded we must have faded you must have faded they must have faded
Perfecto con V-ing
I must have been fading you must have been fading she must have been fading we must have been fading you must have been fading they must have been fading
Negación
Forma simple
I must not fade you must not fade she must not fade we must not fade you must not fade they must not fade
Forma con V-ing
I must not be fading you must not be fading she must not be fading we must not be fading you must not be fading they must not be fading
Perfecto
I must not have faded you must not have faded she must not have faded we must not have faded you must not have faded they must not have faded
Perfecto con V-ing
I must not have been fading you must not have been fading she must not have been fading we must not have been fading you must not have been fading they must not have been fading
Forma interrogativa
Forma simple
must I fade? must you fade? must she fade? must we fade? must you fade? must they fade?
Forma con V-ing
must I be fading? must you be fading? must she be fading? must we be fading? must you be fading? must they be fading?
Perfecto
must I have faded? must you have faded? must she have faded? must we have faded? must you have faded? must they have faded?
Perfecto con V-ing
must I have been fading? must you have been fading? must she have been fading? must we have been fading? must you have been fading? must they have been fading?
Forma interro-negativa
Forma simple
must I not fade? must you not fade? must she not fade? must we not fade? must you not fade? must they not fade?
Forma con V-ing
must I not be fading? must you not be fading? must she not be fading? must we not be fading? must you not be fading? must they not be fading?
Perfecto
must I not have faded? must you not have faded? must she not have faded? must we not have faded? must you not have faded? must they not have faded?
Perfecto con V-ing
must I not have been fading? must you not have been fading? must she not have been fading? must we not have been fading? must you not have been fading? must they not have been fading?