must drop
Verbo regular: drop - dropped- dropped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must drop
you must drop
he must drop
we must drop
you must drop
they must drop 	I must be dropping
you must be dropping
he must be dropping
we must be dropping
you must be dropping
they must be dropping	I must have dropped
you must have dropped
he must have dropped
we must have dropped
you must have dropped
they must have dropped	I must have been dropping
you must have been dropping
he must have been dropping
we must have been dropping
you must have been dropping
they must have been dropping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not drop
you must not drop
he must not drop
we must not drop
you must not drop
they must not drop 	I must not be dropping
you must not be dropping
he must not be dropping
we must not be dropping
you must not be dropping
they must not be dropping	I must not have dropped
you must not have dropped
he must not have dropped
we must not have dropped
you must not have dropped
they must not have dropped	I must not have been dropping
you must not have been dropping
he must not have been dropping
we must not have been dropping
you must not have been dropping
they must not have been dropping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I drop?
must you drop?
must he drop?
must we drop?
must you drop?
must they drop? 	must I be dropping?
must you be dropping?
must he be dropping?
must we be dropping?
must you be dropping?
must they be dropping? 	must I have dropped?
must you have dropped?
must he have dropped?
must we have dropped?
must you have dropped?
must they have dropped? 	must I have been dropping?
must you have been dropping?
must he have been dropping?
must we have been dropping?
must you have been dropping?
must they have been dropping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not drop?
must you not drop?
must he not drop?
must we not drop?
must you not drop?
must they not drop? 	must I not be dropping?
must you not be dropping?
must he not be dropping?
must we not be dropping?
must you not be dropping?
must they not be dropping? 	must I not have dropped?
must you not have dropped?
must he not have dropped?
must we not have dropped?
must you not have dropped?
must they not have dropped? 	must I not have been dropping?
must you not have been dropping?
must he not have been dropping?
must we not have been dropping?
must you not have been dropping?
must they not have been dropping?