must drop
Verbo regular: drop - dropped- dropped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must drop
you must drop
she must drop
we must drop
you must drop
they must drop 	I must be dropping
you must be dropping
she must be dropping
we must be dropping
you must be dropping
they must be dropping	I must have dropped
you must have dropped
she 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
she must have been dropping
we must have been dropping
you must have been dropping
they must have been dropping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't drop
you mustn't drop
she mustn't drop
we mustn't drop
you mustn't drop
they mustn't drop 	I mustn't be dropping
you mustn't be dropping
she mustn't be dropping
we mustn't be dropping
you mustn't be dropping
they mustn't be dropping	I mustn't have dropped
you mustn't have dropped
she mustn't have dropped
we mustn't have dropped
you mustn't have dropped
they mustn't have dropped	I mustn't have been dropping
you mustn't have been dropping
she mustn't have been dropping
we mustn't have been dropping
you mustn't have been dropping
they mustn't have been dropping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I drop?
must you drop?
must she drop?
must we drop?
must you drop?
must they drop? 	must I be dropping?
must you be dropping?
must she be dropping?
must we be dropping?
must you be dropping?
must they be dropping? 	must I have dropped?
must you have dropped?
must she 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 she have been dropping?
must we have been dropping?
must you have been dropping?
must they have been dropping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I drop?
mustn't you drop?
mustn't she drop?
mustn't we drop?
mustn't you drop?
mustn't they drop? 	mustn't I be dropping?
mustn't you be dropping?
mustn't she be dropping?
mustn't we be dropping?
mustn't you be dropping?
mustn't they be dropping? 	mustn't I have dropped?
mustn't you have dropped?
mustn't she have dropped?
mustn't we have dropped?
mustn't you have dropped?
mustn't they have dropped? 	mustn't I have been dropping?
mustn't you have been dropping?
mustn't she have been dropping?
mustn't we have been dropping?
mustn't you have been dropping?
mustn't they have been dropping?