I must theorise you must theorise he must theorise we must theorise you must theorise they must theorise
Forma con V-ing
I must be theorising you must be theorising he must be theorising we must be theorising you must be theorising they must be theorising
Perfecto
I must have theorised you must have theorised he must have theorised we must have theorised you must have theorised they must have theorised
Perfecto con V-ing
I must have been theorising you must have been theorising he must have been theorising we must have been theorising you must have been theorising they must have been theorising
Negación
Forma simple
I must not theorise you must not theorise he must not theorise we must not theorise you must not theorise they must not theorise
Forma con V-ing
I must not be theorising you must not be theorising he must not be theorising we must not be theorising you must not be theorising they must not be theorising
Perfecto
I must not have theorised you must not have theorised he must not have theorised we must not have theorised you must not have theorised they must not have theorised
Perfecto con V-ing
I must not have been theorising you must not have been theorising he must not have been theorising we must not have been theorising you must not have been theorising they must not have been theorising
Forma interrogativa
Forma simple
must I theorise? must you theorise? must he theorise? must we theorise? must you theorise? must they theorise?
Forma con V-ing
must I be theorising? must you be theorising? must he be theorising? must we be theorising? must you be theorising? must they be theorising?
Perfecto
must I have theorised? must you have theorised? must he have theorised? must we have theorised? must you have theorised? must they have theorised?
Perfecto con V-ing
must I have been theorising? must you have been theorising? must he have been theorising? must we have been theorising? must you have been theorising? must they have been theorising?
Forma interro-negativa
Forma simple
must I not theorise? must you not theorise? must he not theorise? must we not theorise? must you not theorise? must they not theorise?
Forma con V-ing
must I not be theorising? must you not be theorising? must he not be theorising? must we not be theorising? must you not be theorising? must they not be theorising?
Perfecto
must I not have theorised? must you not have theorised? must he not have theorised? must we not have theorised? must you not have theorised? must they not have theorised?
Perfecto con V-ing
must I not have been theorising? must you not have been theorising? must he not have been theorising? must we not have been theorising? must you not have been theorising? must they not have been theorising?