must underheat
Verbo regolare: underheat - underheated- underheated

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must underheat
you must underheat
he must underheat
we must underheat
you must underheat
they must underheat 	I must be underheating
you must be underheating
he must be underheating
we must be underheating
you must be underheating
they must be underheating	I must have underheated
you must have underheated
he must have underheated
we must have underheated
you must have underheated
they must have underheated	I must have been underheating
you must have been underheating
he must have been underheating
we must have been underheating
you must have been underheating
they must have been underheating	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not underheat
you must not underheat
he must not underheat
we must not underheat
you must not underheat
they must not underheat 	I must not be underheating
you must not be underheating
he must not be underheating
we must not be underheating
you must not be underheating
they must not be underheating	I must not have underheated
you must not have underheated
he must not have underheated
we must not have underheated
you must not have underheated
they must not have underheated	I must not have been underheating
you must not have been underheating
he must not have been underheating
we must not have been underheating
you must not have been underheating
they must not have been underheating	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I underheat?
must you underheat?
must he underheat?
must we underheat?
must you underheat?
must they underheat? 	must I be underheating?
must you be underheating?
must he be underheating?
must we be underheating?
must you be underheating?
must they be underheating? 	must I have underheated?
must you have underheated?
must he have underheated?
must we have underheated?
must you have underheated?
must they have underheated? 	must I have been underheating?
must you have been underheating?
must he have been underheating?
must we have been underheating?
must you have been underheating?
must they have been underheating? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not underheat?
must you not underheat?
must he not underheat?
must we not underheat?
must you not underheat?
must they not underheat? 	must I not be underheating?
must you not be underheating?
must he not be underheating?
must we not be underheating?
must you not be underheating?
must they not be underheating? 	must I not have underheated?
must you not have underheated?
must he not have underheated?
must we not have underheated?
must you not have underheated?
must they not have underheated? 	must I not have been underheating?
must you not have been underheating?
must he not have been underheating?
must we not have been underheating?
must you not have been underheating?
must they not have been underheating?