must shift
Verbo regolare: shift - shifted- shifted

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must shift
you must shift
he must shift
we must shift
you must shift
they must shift 	I must be shifting
you must be shifting
he must be shifting
we must be shifting
you must be shifting
they must be shifting	I must have shifted
you must have shifted
he must have shifted
we must have shifted
you must have shifted
they must have shifted	I must have been shifting
you must have been shifting
he must have been shifting
we must have been shifting
you must have been shifting
they must have been shifting	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not shift
you must not shift
he must not shift
we must not shift
you must not shift
they must not shift 	I must not be shifting
you must not be shifting
he must not be shifting
we must not be shifting
you must not be shifting
they must not be shifting	I must not have shifted
you must not have shifted
he must not have shifted
we must not have shifted
you must not have shifted
they must not have shifted	I must not have been shifting
you must not have been shifting
he must not have been shifting
we must not have been shifting
you must not have been shifting
they must not have been shifting	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I shift?
must you shift?
must he shift?
must we shift?
must you shift?
must they shift? 	must I be shifting?
must you be shifting?
must he be shifting?
must we be shifting?
must you be shifting?
must they be shifting? 	must I have shifted?
must you have shifted?
must he have shifted?
must we have shifted?
must you have shifted?
must they have shifted? 	must I have been shifting?
must you have been shifting?
must he have been shifting?
must we have been shifting?
must you have been shifting?
must they have been shifting? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not shift?
must you not shift?
must he not shift?
must we not shift?
must you not shift?
must they not shift? 	must I not be shifting?
must you not be shifting?
must he not be shifting?
must we not be shifting?
must you not be shifting?
must they not be shifting? 	must I not have shifted?
must you not have shifted?
must he not have shifted?
must we not have shifted?
must you not have shifted?
must they not have shifted? 	must I not have been shifting?
must you not have been shifting?
must he not have been shifting?
must we not have been shifting?
must you not have been shifting?
must they not have been shifting?