I must cross you must cross she must cross we must cross you must cross they must cross
Forma con V-ing
I must be crossing you must be crossing she must be crossing we must be crossing you must be crossing they must be crossing
Perfecto
I must have crossed you must have crossed she must have crossed we must have crossed you must have crossed they must have crossed
Perfecto con V-ing
I must have been crossing you must have been crossing she must have been crossing we must have been crossing you must have been crossing they must have been crossing
Negación
Forma simple
I must not cross you must not cross she must not cross we must not cross you must not cross they must not cross
Forma con V-ing
I must not be crossing you must not be crossing she must not be crossing we must not be crossing you must not be crossing they must not be crossing
Perfecto
I must not have crossed you must not have crossed she must not have crossed we must not have crossed you must not have crossed they must not have crossed
Perfecto con V-ing
I must not have been crossing you must not have been crossing she must not have been crossing we must not have been crossing you must not have been crossing they must not have been crossing
Forma interrogativa
Forma simple
must I cross? must you cross? must she cross? must we cross? must you cross? must they cross?
Forma con V-ing
must I be crossing? must you be crossing? must she be crossing? must we be crossing? must you be crossing? must they be crossing?
Perfecto
must I have crossed? must you have crossed? must she have crossed? must we have crossed? must you have crossed? must they have crossed?
Perfecto con V-ing
must I have been crossing? must you have been crossing? must she have been crossing? must we have been crossing? must you have been crossing? must they have been crossing?
Forma interro-negativa
Forma simple
must I not cross? must you not cross? must she not cross? must we not cross? must you not cross? must they not cross?
Forma con V-ing
must I not be crossing? must you not be crossing? must she not be crossing? must we not be crossing? must you not be crossing? must they not be crossing?
Perfecto
must I not have crossed? must you not have crossed? must she not have crossed? must we not have crossed? must you not have crossed? must they not have crossed?
Perfecto con V-ing
must I not have been crossing? must you not have been crossing? must she not have been crossing? must we not have been crossing? must you not have been crossing? must they not have been crossing?